Updated on 2025/08/05

写真a

 
SHINSHI TADAHIKO
 
Organization
Institute of Integrated Research Laboratory for Future Interdisciplinary Research of Science and Technology Professor
Title
Professor
Homepage
https://www.precisionmechatronics.mech.e.titech.ac.jp/
External link

Degree

  • 博士（工学） ( 東京工業大学 )

Research Interests

  • 精密位置決め

  • 電磁力応用機械

  • 磁気軸受・磁気浮上

Research Areas

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Machine elements and tribology

  • Life Science / Medical systems

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Manufacturing and production engineering

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Design engineering

  • Nanotechnology/Materials / Nano/micro-systems

Education

  • Tokyo Institute of Technology   Graduate School, Division of Integrated Science and Engineering

    - 1992

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    Notes： Master course Completed

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  • Tokyo Institute of Technology   Faculty of Engineering

    - 1990

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    Notes： Graduated

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Research History

  • 日本学術振興会   学術システム研究センター   研究員

    2024.4

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  • 東北大学大学院 歯学研究科   客員教授

    2023.4

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  • The Open University of Japan

    2013.6

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  • Tokyo Institute of Technology   Professor

    2010.10

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  • 文部科学省   研究振興局   学術調査官

    2004.8 - 2006.7

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  • Tokyo Medical and Dental University

    2004 - 2012.3

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  • Tokyo Institute of Technology

    2000.10 - 2010.9

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  • Tokyo Institute of Technology

    1995.4 - 2000.9

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  • (株）日立製作所   機械研究所   企画員

    1992.4 - 1995.3

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Professional Memberships

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Papers

  • A 249-GHz Impedance-Tunable Waveguide Transition Using a Microactuator and Flexible Conductive Membrane Reviewed International journal

    Chao QI, Sangyeop Lee, Takeshi Yoshida, Tadahiko SHINSH

    IEEE Access   Vol. 11   2025.7

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：IEEE  

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  • PLD法で作製した厚膜磁石の成膜領域の拡大化 Reviewed

    中野 正基, 田原 楽飛, 東 倖主, 進士 忠彦, 山下 昂洋, 柳井 武志

    電気学会論文誌A（基礎・材料・共通部門誌）   Vol. 145 ( No. 7 )   217 - 221   2025.7

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：電気学会  

    DOI： 10.1541/ieejfms.145.217

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  • Isolation of microbubbles beyond Sparrow’s resolution limit in super-resolution ultrasonography using phase patterned waves Reviewed International journal

    Junseok An, Naohiro Sugita, Tadahiko Shinshi

    Physics in Medicine & Biology   70   145025   2025.7

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：IOP Publishing  

    DOI： 10.1088/1361-6560/adeb3d

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  • Effects of multi-divisional driving using a linear array transducer on microbubble backscattering Reviewed International journal

    Junsyou Kanashima, Junseok An, Naohiro Sugita, Tadahiko Shinshi

    Applied Acoustics   Vol. 231   2025.3

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier  

    DOI： 10.1016/j.apacoust.2024.110482

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  • 観測衛星用高速ステアリングミラーの開発—特集 衛星センシングの最前線

    進士 忠彦

    光技術コンタクト = Optical and electro-optical engineering contact   62 ( 11 )   40 - 45   2024.11

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：東久留米 : 光学工業技術協会  

    CiNii Research

    J-GLOBAL

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    Other Link： https://ndlsearch.ndl.go.jp/books/R000000004-I033810297

  • Torque Regulation Theory and Sensorless Control Technology for Unipolar Salient Synchronous Permanent Magnet Motor Based on Unified Models Reviewed International journal

    Zeqiang He, Tadahiko Shinshi

    IEEE Transactions on Power Electronics   2024.11

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：IEEE  

    DOI： 10.1109/TPEL.2024.3495715

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  • A single-coil-driven tristable electromagnetic mini valve with multiple working states Reviewed International journal

    Jingjia Zhu, Pengfei Han, Chao Qi, Guofang Gong, Huayong Yang, Tadahiko Shinshi, Dong Han

    Sensors and Actuators: A. Physical   Vol. 377   2024.10

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：ELSEVIER  

    DOI： 10.1016/j.sna.2024.115699

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  • Preparation of magnetic films using LIFT technique Reviewed International journal

    Masaki Nakano, Kosuke Higashi, Gakuto Tahara, Akihiro Yamashita, Takeshi Yanai, Chao Qi, Keita Nagai, Tadahiko Shinshi, Hirotoshi Fukunaga

    Japanese Journal of Applied Physics   63 ( 10 )   10SP11 - 10SP11   2024.9

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：The Japan Society of Applied Physics  

    Abstract

    In the study, laser induced forward transfer (LIFT) of magnetic materials such as α-Fe and Nd–Fe–B was performed to directly deposit on a substrate using a YAG laser. Usage of an optical shatter and Galvano scanner enabled us to obtain LIFT-made films with a dotted pattern. The effects of conditions of laser irradiation on the deposited films were investigated. There was a threshold energy density for obtaining α-Fe dot patterns with LIFT. Energy density of a laser beam enabled a larger size of deposited dot patterns under the same laser spot size. In LIFT-prepared α-Fe films, atmosphere during the deposition did not strongly affect the crystalline structure. On the other hand, the deterioration of coercivity and squareness in LIFT-made Nd–Fe–B films was observed under a low vacuum atmosphere of 10 Pa compared with those of LIFT-made ones in a high vacuum of 10−4 Pa. It was also confirmed that Nd–Fe–B films with a coercivity of 290 kA m−1 on paper could be deposited via the LIFT technique.

    DOI： 10.35848/1347-4065/ad7f64

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    Other Link： https://iopscience.iop.org/article/10.35848/1347-4065/ad7f64/pdf

  • An electromagnetic microactuator with tunable dynamic characteristics using a thick-film FePt permanent magnet Reviewed International journal

    Chao Qi, Yu Miyahara, Ziteng Wang, Naohiro Sugita, Masaki Nakano, Tadahiko Shinshi

    AIP Advances   14 ( 095116 (2024) )   2024.9

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：AIP Publishing  

    We designed an electromagnetic microactuator with tunable dynamic characteristics using a thick-film FePt permanent magnet. FePt is a promising microactuator material because of its low Young’s modulus, high tensile strength, high ultimate strain as a structural material, and high remanence as a permanent magnet. By employing the laser-assisted heating magnetization method, we successfully reprogrammed the magnetization pattern of the FePt thick film, which led to the tuning of the dynamic characteristics of the 3.85 mm (l) × 0.82 mm (w) × 0.023 mm (t) FePt-based cantilever under the same alternating external magnetic field. When only the tip of the cantilever beam is magnetized, or when the tip and center of the same beam are magnetized in opposite phases, the peak gain of the frequency response characteristics of the former can be tuned to be 19 dB higher than that of the latter in the first-order mode and 19 dB lower than that of the latter in the second-order mode.

    DOI： 10.1063/5.0217914

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  • A compact and low-frequency drive ultrasound transducer for facilitating cavitation-assisted drug permeation via skin Reviewed International journal

    Shinya Yamamoto, Naohiro Sugita, Keita Tomioka, Tadahiko Shinshi

    Biomedical Physics & Engineering Express   Vol. 10 ( No. 6 )   2024.9

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    Low-frequency sonophoresis has emerged as a promising minimally invasive transdermal drug delivery method. However, effectively inducing cavitation on the skin surface with a compact, low-frequency ultrasound transducer poses a significant challenge. This paper presents a modified design of a low-frequency ultrasound transducer capable of generating ultrasound cavitation on the skin surfaces. The transducer comprises a piezoelectric ceramic disk and a bowl-shaped acoustic resonator. A conical slit structure was incorporated into the modified transducer design to amplify vibration displacement and enhance the maximum sound pressure. The FEM-based simulation results confirmed that the maximum sound pressure at the resonance frequency of 78 kHz was increased by 1.9 times that of the previous design. Ultrasound cavitation could be experimentally observed on the gel surface. Moreover, 3 min of ultrasound treatment significantly improved the caffeine permeability across an artificial membrane. These results demonstrated that this transducer holds promise for enhancing drug permeation by generating ultrasound cavitation on the skin surface.

    DOI： 10.1088/2057-1976/ad7596

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  • A Flexural Ultrasonic Transducer for Inducing Acoustic Cavitation on Material Surfaces Reviewed International journal

    Naohiro Sugita, Shinya Yamamoto, Keita Tomioka, Tadahiko Shinshi

    Journal of Vibration Engineering & Technologies   2024.7

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Springer  

    DOI： 10.1007/s42417-024-01482-1

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  • Microbubble detection on ultrasound imaging by utilizing phase patterned waves Reviewed International journal

    Junseok An, Naohiro Sugita, Tadahiko Shinshi

    Physics in Medicine & Biology   Vol. 69 ( No. 13 )   2024.6

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：IOP Publishing  

    Objective.Super-resolution ultrasonography offers the advantage of visualization of intricate microvasculature, which is crucial for disease diagnosis. Mapping of microvessels is possible by localizing microbubbles (MBs) that act as contrast agents and tracking their location. However, there are limitations such as the low detectability of MBs and the utilization of a diluted concentration of MBs, leading to the extension of the acquisition time. We aim to enhance the detectability of MBs to reduce the acquisition time of acoustic data necessary for mapping the microvessels.Approach.We propose utilizing phase patterned waves (PPWs) characterized by spatially patterned phase distributions in the incident beam to achieve this. In contrast to conventional ultrasound irradiation methods, this irradiation method alters bubble interactions, enhancing the oscillation response of MBs and generating more significant scattered waves from specific MBs. This enhances the detectability of MBs, thereby enabling the detection of MBs that were undetectable by the conventional method. The objective is to maximize the overall detection of bubbles by utilizing ultrasound imaging with additional PPWs, including the conventional method. In this paper, we apply PPWs to ultrasound imaging simulations considering bubble-bubble interactions to elucidate the characteristics of PPWs and demonstrate their efficacy by employing PPWs on MBs fixed in a phantom by the experiment.Main results.By utilizing two types of PPWs in addition to the conventional ultrasound irradiation method, we confirmed the detection of up to 93.3% more MBs compared to those detected using the conventional method alone.Significance.Ultrasound imaging using additional PPWs made it possible to increase the number of detected MBs, which is expected to improve the efficiency of bubble detection.

    DOI： 10.1088/1361-6560/ad5511

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  • Preparation of Nd–Fe–B films via a low-temperature process Reviewed International journal

    M. Nakano, K. Higashi, G. Tahara, I. Fukuda, A. Yamashita, T. Yanai, K. Nagai, T. Shinshi, H. Fukunaga1

    IEEE Transactions on Magnetics   1 - 1   2024.5

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：IEEE  

    DOI： 10.1109/TMAG.2024.3401157

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  • Batch Fine Magnetic Pattern Transfer Method on Permanent Magnets Using Coercivity Change during Heating for Magnetic MEMS Reviewed International journal

    Keita Nagai, Naohiro Sugita, Tadahiko Shinshi

    Micromachines2024   15 ( 248 )   2024.2

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：MDPI  

    In magnetic microelectromechanical systems (MEMSs), permanent magnets in the form of a thick film or thin plate are used for structural and manufacturing purposes. However, the geometric shape induces a strong self-demagnetization field during thickness-direction magnetization, limiting the surface magnetic flux density and output power. The magnets must be segmented or magnetized in a fine and multi-pole manner to weaken the self-demagnetization field. Few studies have been performed on fine multi-pole magnetization techniques that can generate a higher surface magnetic flux density than segmented magnets and are suitable for mass production. This paper proposes a batch fine multi-pole magnetic pattern transfer (MPT) method for the magnets of MEMS devices. The proposed method uses two master magnets with identical magnetic patterns to sandwich a target magnet. Subsequently, the coercivity of the target magnet is reduced via heating, and the master magnet's magnetic pattern is transferred to the target magnet. Stripe, checkerboard, and concentric circle patterns with a pole pitch of 0.3 mm are magnetized on the NdFeB master magnets N38EH with high intrinsic coercivity via laser-assisted heating magnetization. The MPT yields the highest surface magnetic flux density at 160 °C, reaching 39.7-66.1% of the ideal magnetization pattern on the NdFeB target magnet N35.

    DOI： 10.3390/mi15020248

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  • Radial Displacement Measurement Method in Bearingless Slice Motor Through Eddy Current Displacement Sensors Positioned on the Underside of the Rotor Reviewed International journal

    REN YANG, ZEQIANG HE, NAOHIRO SUGITA, TADAHIKO SHINSHI

    IEEE Access   Vol. 12   26610 - 26625   2024.2

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：IEEE  

    DOI： 10.1109/ACCESS.2024.3366345

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  • Multi-pole magnetization of NdFeB magnetic elastomers via a programmable magnetic stamp inspired by movable type printing Reviewed International journal

    Runyi Deng, Qing Cao, Guofang Gong, Huayong Yang, Tadahiko Shinshi, Dong Han

    Sensors and Actuators: A. Physical   366   2023.12

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier  

    DOI： 10.1016/j.sna.2023.114945

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  • Influence of permanent magnetic properties on laser-assisted heating magnetization for magnetic MEMS Reviewed International journal

    Keita Nagai, Naohiro Sugita, Tadahiko Shinshi

    IEEE Access   Vol. 11   143446 - 143456   2023.12

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：IEEE  

    DOI： 10.1109/ACCESS.2023.3341971

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  • Diagnosis and Vibration Suppression of Rotating Machine Using Electromagnetic Force

    SHINSHI Tadahiko

    Journal of the Japan Society for Precision Engineering   89 ( 11 )   812 - 816   2023.11

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    Language：Japanese   Publisher：The Japan Society for Precision Engineering  

    DOI： 10.2493/jjspe.89.812

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    Other Link： https://ndlsearch.ndl.go.jp/books/R000000004-I033164262

  • Development of a flexible coil based on conductive polymer composite for PDMS-based soft electromagnetic microactuators Reviewed International journal

    Chao Qi, Naohiro Sugita, Tadahiko Shinshi

    Sensors and Actuators: A. Physical   Vol. 363   2023.10

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier  

    DOI： 10.1016/j.sna.2023.114766

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  • A Telescopic Mechanism for Capturing Space Debris Reviewed International journal

    Tadahiko SHINSHI

    Abstract of the 26th International Conference on Mechatronics Technology (ICMT 2023)   2023.10

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  • A Novel Heteropolar Bearingless Slice Motor with a PM-free Rotor for Centrifugal Blood Pump Applications Reviewed International journal

    ZEQIANG HE, NAOHIRO SUGITA, TADAHIKO SHINSHI

    IEEE Access   2023.9

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：IEEE  

    DOI： 10.1109/ACCESS.2023.3313165

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  • Nd–Fe–B Thick-film Magnets on Si Substrates with Al–O Underlayers International journal

    Haruka Yamaguchi, Kota Higuchi, Hibiki Kaku, Akihiro Yamashita, Takeshi Yanai, Hirotoshi Fukunaga, Keita Nagai, Tadahiko Shinshi, Masaki Nakano

    IEEE Transactions on Magnetics   59 ( 11 )   WPB - 01   2023.5

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    DOI： 10.1109/tmag.2023.3288911

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  • Nonlinear coupling between radial and axial vibrations during single-axis acoustic levitation in mid-air Reviewed International journal

    Naohiro Sugita, Taichi Oshino, Tadahiko Shinshi

    International Journal of Mechanical Sciences   Vol. 246   2023.5

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：ELSEVIER  

    DOI： 10.1016/j.ijmecsci.2023.108159

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  • Low-Cost and Compact Disposable Extracorporeal Centrifugal Blood Pump Utilizing a Homopolar Bearingless Switched Reluctance Slice Motor Reviewed International journal

    Ren Yang, Zeqiang He, Naohiro Sugita, Tadahiko Shinshi

    IEEE Access   Vol. 11   24353 - 24366   2023.3

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：IEEE  

    DOI： 10.1109/ACCESS.2023.3254546

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  • Improvement of the magnetic properties of Nd–Fe–B/glass two-layer films deposited on Si substrates Reviewed International journal

    M. Nakano, K. Higuchi, H. Yamaguchi, I. Fukuda, A.Yamashita, T. Yanai, T. Shinshi, H. Fukunaga

    AIP Advances   13 ( 2 )   025131 - 025131   2023.2

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：API Publishing  

    In a previous study, the authors developed Nd–Fe–B/glass two-layer films deposited on Si substrates using pulsed laser deposition for micro electro mechanical systems. Here, the fabrication conditions of the films were investigated to determine the optimum conditions that enhance the magnetic properties of the films. The annealing time in the pulse-annealing process conducted after the deposition was set to 4.0 s at Nd contents of 14 at.–16 at.%. Moreover, the effect of the glass/Nd–Fe–B thickness ratio on the magnetic properties was examined. A ratio less than 2 resulted in an increase in (BH)max up to 80 kJ/m3.

    DOI： 10.1063/9.0000599

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  • A Disposable Electromagnetic Bi‐Directional Micropump Utilizing a Rotating Multi‐Pole Ring Magnetic Coupling Reviewed International journal

    Chao Qi, Naohiro Sugita, Tadahiko Shinshi

    Micromachines   2022 ( No. 13 )   1565   2022.9

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：MDPI  

    Electromagnetic bi-directional micropumps (EMBM) are indispensable for the development of portable devices which enable fluid transportation in forward and reverse directions. However, the high disposal cost of rare-earth magnets attached to the fluidic part and the low pump density due to multiple motors limit their practical application in disposable multi-channel microfluidic applications such as droplet-based oscillatory-flow (DBOF) rapid PCR amplification. Therefore, this paper presented a low-cost, disposable, high-pump-density EMBM. To reduce the disposal cost, we separated the magnets from the disposable fluidic part and used cylindrical holes to store and guide the magnet, which resulted in the ability to reuse all the magnets. To increase the pump density, we used the combination of one motor and one multi-pole ring magnet to drive several channels simultaneously. A proof-of-concept prototype with a pump density of 0.28 cm-2 was fabricated and experimentally evaluated. The fabricated micropump exhibited a maximum flow rate of 0.86 mL/min and a maximum backpressure of 0.5 kPa at a resonant frequency around 50 Hz. The developed multi-channel micropump with reusable magnets is highly beneficial to the development of low-cost and high-throughput rapid PCR amplification microchips and therefore can have a significant impact on timely infectious disease recognition and intervention.

    DOI： 10.3390/mi13101565

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  • Experiment and modelling of cantilever-based electromagnetic energy harvester driven by direct impact of spherical ball Reviewed International journal

    Naohiro Sugita, Makoto Kine, Dong Han, Tadahiko Shinshi

    Microsystem Technologies   2022.6

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1007/s00542-022-05333-5

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  • Forced liquid cooling of piezoelectric stack actuator utilizing silicone oil Reviewed International journal

    Rina Nishida, Jianpeng Zhong, Tadahiko Shinshi

    Precision Engineering   Vol. 75   120 - 128   2022.5

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：ELSEVIER  

    DOI： 10.1016/j.precisioneng.2022.01.012

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  • 磁気浮上・磁気軸受の医療応用

    土方 亘, 増澤 徹, 進士 忠彦, 栗田 伸幸, 小沼 弘幸, 長 真啓

    2022.5

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  • Liquid cooling of stacked piezoelectric actuators for high-power operation Reviewed International journal

    Jianpeng Zhong, Rina Nishida, Tadahiko Shinshi

    Engineering Research Express   Vol. 4 ( No. 2 )   026001   2022.4

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：IOP Publishing Ltd  

    DOI： 10.1088/2631-8695/ac61a1

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  • Preparation of Fe-Pt thin-sheet magnets using exfoliation behavior Reviewed International journal

    Y. Miyahara, A. Tsuruoka, A. Yamashita, T. Yanai, T. Honda, T. Shinshi, H. Fukunaga

    AIP Advances   12 ( 12, 035232 )   1 - 5   2022.3

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：AIP Publishing  

    In this research, Fe-Pt thin sheets thicker than 10 microns with Fe contents ranging from 50 to 60 at. % were prepared. Isotropic Fe-Pt thin sheets could be obtained by taking advantage of the exfoliation behavior after depositing Fe-Pt films on Si substrates using a laser ablation technique. A post-annealing process was used to obtain the L10 phase, and the ( BH)max value of Fe-Pt thin sheets showed approximately 70 kJ/m3. Moreover, the test of a cantilever containing the obtained Fe-Pt thin sheet showed good mechanical characteristics.

    DOI： 10.1063/9.0000303

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  • Number concentration dependence of ultrasonic disruption ratio of diameter-sorted microcapsules Reviewed International journal

    Junsyou Kanashima, Naohiro Sugita, Tadahiko Shinshi

    Journal of Engineering In Medicine   9544119211070343 - 9544119211070343   2022.1

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：SAGE journals  

    The use of ultrasound to destroy microcapsules in microbubble-assisted drug delivery systems (DDS) is of great interest. In the present study, the disruption ratios of capsule clusters were measured by observing and experimentally analyzing microcapsules with polymer shells undergoing disruption by ultrasound. The microcapsules were dispersed in a planar microchamber filled with a gelatin gel and sonicated using 1 MHz focused ultrasound. Different capsule populations were obtained using a filtration technique to modify and control the capsule sizes. The disruption ratio as a function of the concentration of capsules was obtained through image processing of the recorded photomicrographs. We found that the disruption ratio for each population exponentially decreases as the particle number concentration (PNC) increases. The maximum disruption ratio of the diameter-sorted capsules was larger than that of polydispersed capsules. Particularly, for resonant capsule populations, the ratio was more than twice that of polydispersed capsules. Furthermore, the maximum disruption ratio occurred at higher concentrations as the mean particle diameter of the capsule cluster decreased.

    DOI： 10.1177/09544119211070343

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  • Development of Micro Machining and Micro Magnetization Technology for Permanent Magnets and its Device Applications

    進士忠彦

    電気学会研究会資料(Web)   2021 ( 145-150 )   1 - 4   2021.12

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    Language：Japanese   Publishing type：Research paper (conference, symposium, etc.)  

    CiNii Books

    CiNii Research

    J-GLOBAL

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    Other Link： https://ndlsearch.ndl.go.jp/books/R000000004-I031927067

  • Estimation of the Dynamic Parameters of the Bearings in a Flexible Rotor System Utilizing Electromagnetic Excitation by a Built-In Motor Reviewed International journal

    Yinsi Chen, Ren Yang, Naohiro Sugita, Jianpeng Zhong, Junhong Mao, Tadahiko Shinshi

    Actuators   Vol. 11 ( Issue 1 )   2021.12

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：MDPI  

    DOI： 10.3390/act11010001

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  • Effect of Forced Liquid Cooling on the Voltage/Charge Displacement Characteristics of Stacked Piezoelectric Actuators during High-Frequency Drive Reviewed International journal

    Rina Nishida, Jianpeng Zhong, Tadahiko Shinshi

    Actuators 2021   Vol. 10 ( 11 )   297   2021.11

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：MDPI  

    DOI： 10.3390/act10110297

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  • Design and precision tracking control of a high-bandwidth fast steering mirror for laser beam machining Reviewed International journal

    Jianpeng Zhong, Rina Nishida, Tadahiko Shinshi

    Precision Engineering   Vol. 73(2022)   128 - 139   2021.9

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier  

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  • 磁気浮上血液ポンプとその多機能化

    進士 忠彦

    まぐね／Magnetics Japan   Vol. 16 ( No. 4 )   189 - 195   2021.8

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：日本磁気学会  

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    CiNii Research

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    Other Link： https://ndlsearch.ndl.go.jp/books/R000000004-I031646168

  • Identification of Bearing Dynamic Parameters and Unbalanced Forces in a Flexible Rotor System Supported by Oil-Film Bearings and Active Magnetic Devices Reviewed International journal

    Yinsi Chen, Ren Yang, Naohiro Sugita, Junhong Mao, Tadahiko Shinshi

    Actuators2021   Vol. 10 ( Issue 9 )   216   2021.8

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：MDPI  

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  • A MEMS-based electromagnetic membrane actuator utilizing bondedmagnets with large displacement Reviewed International journal

    Chao Qi, Dong Han, Tadahiko Shinshi

    Sensors and Actuators A: Physical   Volume 330 ( 112834 )   1 - 11   2021.5

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：ELSEVIER  

    DOI： 10.1016/j.sna.2021.112834

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  • 平面分布したマイクロカプセル群の数濃度と崩壊率に関する実験的解析 Reviewed

    杉田 直広, 進士 忠彦

    日本機械学会論文集   vol. 87 ( No. 895 )   2021.3

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：日本機械学会  

    DOI： 10.1299/transjsme.20-00193

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  • A digital charge control strategy for reducing the hysteresis in piezoelectric actuators: Analysis, design, and implementation Reviewed International journal

    Jianpeng Zhong, Rina Nishida, Tadahiko Shinshi

    Precision Engineering   Volume 67   370 - 382   2021.1

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    DOI： 10.1016/j.precisioneng.2020.10.006

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  • Energy Scavenging From Low Frequency Vibrations Through a Multi-Pole Thin Magnet and a High-Aspect-Ratio Array Coil Reviewed International journal

    Dong Han, Tadahiko Shinshi, Makoto Kine

    International Journal of Precision Engineering and Manufacturing-Green Technology   2020.12

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    DOI： 10.1007/s40684-020-00276-6

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  • セグメントと高速ステアリングミラー用圧電駆動型アクチュエータの開発 Reviewed

    西田 莉那, 鍾 建朋, 進士 忠彦

    精密工学会誌 = Journal of the Japan Society of Precision Engineering   Vol. 86 ( No. 11 )   2020.11

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  • A Fast Steering Mirror Using a Compact Magnetic Suspension and Voice Coil Motors for Observation Satellites Reviewed International journal

    Tadahiko Shinshi, Daisuke Shimizu, Kazuhide Kodeki, Kazuhiko Fukushima

    electronics   Vol. 9 ( No. 12 )   1997   2020.11

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  • 複数の移動体を有する平面モータのセンサレス位置推定 Reviewed

    西村 恵寿, 進士 忠彦, 韓 冬, 秋山 稔博, 石田 哲夫

    日本AEM学会誌   Vol. 28 ( Number 2 )   81 - 86   2020.8

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  • Frequency response function measurement of a rotor system utilizing electromagnetic excitation by a built-in motor Reviewed International journal

    Ren YANG, Wataru TSUNODA, Dong HAN, Jianpeng ZHONG, Tadahiko SHINSHI

    Journal of Advanced Mechanical Design, Systems, and Manufacturing   Vol. 14 ( No. 4 )   No.19 - 00356   2020.6

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  • Micro Linear Halbach Array of Thick Film Nd-Fe-B Magnets Utilizing Local Laser Irradiation and a Direction-Changeable External Magnetic Field Reviewed International journal

    Dong Han, Tadahiko Shinshi, Keita Nagai, Mizuki Momosaki, Masaki Nakano

    IEEE MAGNETICS LETTERS   Vol. 11   2020.6

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    DOI： 10.1109/LMAG.2020.3006785

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  • High torque micro slice motor using a multipole ring magnet Reviewed International journal

    Dong Han, Keita Nagai, Tadahiko Shinshi

    Sensors and Actuators A:Physical   311   112050   2020.5

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    DOI： 10.1016/j.sna.2020.112050

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  • Design and evaluation of a PEA-driven fast steering mirror with a permanent magnet preload force mechanism Reviewed International journal

    Jianpeng Zhong, Lichuan Li, Rina Nishida, Tadahiko Shinshi

    Precision Engineering   62 ( 95-105 )   95 - 105   2020.3

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    DOI： 10.1016/j.precisioneng.2019.11.003

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  • Comparison of properties between Pr-Fe-B and Nd-Fe- B thick-film magnets applied to MEMS Reviewed International journal

    Masaki Nakano, Sho Takeichi, Takashi Yamaguchi, Keisuke Takashima, Akihiro Yamashita, Takeshi Yanai, Tadahiko Shinshi, Hirotoshi Fukunaga

    Jpn.Appl.Phys   59   2020.1

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    DOI： 10.7567/1347-4065/ab5534

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  • Position measurement and control of a thin and compact linear switched reluctance motor with a disposable-film mover Reviewed International journal

    Mohd Nazmin Maslan, Kaiji Sato, Tadahiko Shinshi

    Sensors and Actuators A: Physical   285 ( 285 )   80 - 88   2019.11

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    DOI： 10.1016/j.sna.2018.11.005

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  • An in-plane, large-stroke, multipole electromagnetic microactuatorrealized by guideways stacking mechanism Reviewed International journal

    Dong Han, Tadahiko Shinshi, Noriei Azuma, Shogo Kadota

    Sensors and Actuators A: Physical   298 ( 298 )   11563   2019.8

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    DOI： 10.1016/j.sna.2019.111563

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  • Frequency response function measurement utilizing radial excitation force generated by permanent magnet synchronous motor Reviewed International journal

    Wataru Tsunoda, Akira Chiba, Tadahiko Shinshi

    Mechatronics   61 ( 61 )   49 - 57   2019.6

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    DOI： 10.1016/j.mechatronics.2019.05.007

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  • Vibration control for rotor supported by oil-film bearings using bearingless motor Reviewed International journal

    Wataru Tsunoda, Akira Chiba, Tadahiko Shinshi

    IEEE/ASME Transactions on Mechatronics   Vol. 24 ( No. 3 )   1368 - 1375   2019.6

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    DOI： 10.1109/TMECH.2019.2908929

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  • PLD-Fabricated Isotropic Pr-Fe-B Film Magnets Deposited on Glass Substrates Reviewed International journal

    A.Yamashita, K.Hirotaki, A.Kurosaki, T.yanai, H.Fukunaga, R.Fujiwara, T.Shinshi, M.Nakano

    IEEE Transaction on Magnetics   Vol. 53 ( No. 4 )   2017.4

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    DOI： 10.1109/TMAG.2016.2633362

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  • レーザ蒸着法による硬磁性膜の作成 Reviewed

    中野 正基, 山下 昂洋, 柳井 武志, 板倉 賢, 藤原 良元, 進士 忠彦, 福永 博俊

    まぐね/Magnetics Jpn.   Vol. 12 ( No. 1 )   26 - 30   2017.3

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  • Micromachining and micro-magnetization of Pr-Fe-B magnets fabricated using pulsed laser deposition for MEMS applications Reviewed International journal

    Ryogen Fujiwara, Shunya Tanaka, Wataru Hijikata, Tadahiko Shinshi, Keishi Hirotaki, Akihiro Yamashita, Masaki Nakano

    Sensors and Actuators A:Physical   251 ( No. 251 )   219 - 224   2016.11

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    DOI： 10.1016/j.sna.2016.10.027

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  • 補助人工心臓開発と大学発ベンチャー—Development of Ventricular Assist Devices by University Initiated Venture

    進士 忠彦

    フルードパワーシステム = Journal of the Japan Fluid Power System Society : 日本フルードパワーシステム学会誌 / 日本フルードパワーシステム学会 編   47 ( 6 )   310 - 312   2016.11

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  • Implantable power generation system utilizing muscle contractions excited by electrical stimulation Reviewed International journal

    Genta Sahara, Wataru Hijikata, Kouta Tomioka, Tadahiko Shinshi

    Proc IMechE Part H: J Engineering in Medicine   Vol. 230 ( No. 6 )   569 - 578   2016.5

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    DOI： 10.1177/0954411916638889

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  • Developement of a suspention type sliding planar motion table using magnetic fluid lubrication Reviewed International journal

    Xinghui Li, Tadahiko Shinshi, Wataru Hijikata, Yoshihiro Morimoto

    Review of Scientific Instruments   Vol. 87 ( No. )   065003 - 065003   2016.5

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    DOI： 10.1063/1.4953653

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  • Stability diagnosis of rotor‐oil film bearing system by utilizing magnetic bearing Reviewed

    津野田亘, 土方亘, 進士忠彦, 藤原浩幸, 松下修己

    日本機械学会論文集(Web)   Vol. 82 ( No. 834 )   1 - 11   2016.2

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    Oil film bearings are applied for large rotational machineries owing to their large load capacity and damping effect. However, a swirling flow of the lubricant induces self-excitation at high rotational speed. The stability margin changes during many years due to the mechanical wear and fatigue. Thus, stability diagnosis of the rotor-oil film bearing systems is required. In this paper, we focus on the onset rotational speed of self-excitation as a stability index. Firstly, a 2-DOF rotor-oil film bearing model is constructed using the mode synthesis method and Bently/Muszynska model for oil film bearings. Then, an estimation method of the onset rotational speed using frequency responses measured at lower rotational speeds than the onset one is derived from the model. Finally, a test rig consisting of a rotor supported with two oil film bearings and a radial magnetic bearing is fabricated and frequency response functions with forward circular excitation are measured by utilizing the magnetic bearing. The experimental result shows that the predicted onset rotational speed using the frequency responses at 30, 40 and 50 rps is 60.4 rps, and the error between the estimated and measured onset rotational speeds is less than 4 rps (6%).

    DOI： 10.1299/transjsme.15-00500

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  • Sub-Millimeter Pitch Multipole Magnetization in a Sintered Nd-Fe-B Magnet Utilizing Laser Heating Reviewed International journal

    Ryogen Fujiwara, Shunya Tanaka, Wataru Hijikata, Tadahiko Shinshi

    IEEE MAGNETICS LETTERS   Volume 7   2016.2

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    DOI： 10.1109/LMAG.2015.2508004

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  • 人工心臓の現状と最新動向

    進士 忠彦

    はかる   32 ( 3 )   10 - 13   2016

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  • Nd-Fe-B Film Magnets With Thickness Above 100 mu m Deposited on Si Substrates Reviewed

    M. Nakano, Y. Chikuba, M. Oryoshi, A. Yamashita, T. Yanai, R. Fujiwara, T. Shinshi, H. Fukunaga

    IEEE TRANSACTIONS ON MAGNETICS   51 ( 11 )   2015.11

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    DOI： 10.1109/TMAG.2015.2438099

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  • Nd-Fe-B film magnets with the thickness above 100μm deposited on Si substrates Reviewed International journal

    M.Nakano, Y.Chikuba, M, Oryoshi, A.yamashita, T.Yanai, R.Fujiwara, T.Shinshi, H.Fukunaga

    IEEE Transactions on Magnetics   51 ( AS-08 )   1 - 4   2015.7

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    DOI： 10.1109/TMAG.2015.2438099

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  • Estimating Flow Rate Using the Motor Torque in a Rotary Blood Pump Reviewed International journal

    Wataru Hijikata, Jun Rao, Shodai Abe, Setsuo Takatani, Tadahiko Shinshi

    Sensors and Materials   Vol. 27 ( No. 4 )   297 - 308   2015.6

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    DOI： 10.18494/SAM.2015.1128

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  • Effect of high-frequency orbital and vertical oscillations of the laser focus position on the quality of the cut surface in a thick plate by laser beam machining Reviewed International journal

    Yoshihiro Morimoto, Dongjue He, Wataru Hijikata, Tadahiko Shinshi, Takahiro Nakai, Naoyuki Nakamura

    Precision Engineering   Vol. 40   112 - 123   2015.4

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    DOI： 10.1016/j.precisioneng.2014.10.012

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  • An Intravascular Micro Turbine Generator Reviewed

    TSUNODA Wataru, HIJIKATA Wataru, SHINSHI Tadahiko

    Journal of the Japan Society of Applied Electromagnetics and Mechanics   Vol. 23 ( No. 1 )   151 - 156   2015.3

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    In order to avoid the drive line infection of implantable devices and the surgical treatment for battery replacement, an intravascular micro turbine generator using blood flow, has been proposed and developed. The micro generator consisting of a micro turbine, a magnetic fluid (MF) seal, a stent, and an electrical generator is inserted by catheter into a descending aorta, which is able to reduce the invasiveness to patients. The experimental results using a prototype generator placed in a mock circuit loop showed that the resisting pressure of the MF seal was more than 25 kPa at 2,000 rpm and the generated power was 0.12 mW under a pulsatile flow condition.

    DOI： 10.14243/jsaem.23.151

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  • 連続流血液ポンプ—特集 フルードパワーの超大型及び超小型への適用(2)

    進士 忠彦

    油空圧技術 / 油空圧技術編集委員会 編   54 ( 3 )   53 - 58   2015.3

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    Other Link： https://ndlsearch.ndl.go.jp/books/R000000004-I026152094

  • A Polydimethylsiloxane diaphragm integrated with a sputtered thin film NdFeB magnet Reviewed International journal

    Chao Zhi, Tadahiko Shinshi, Minoru Uehara, Akihiro Matsutani, Isamu Yuito, Teruaki Takeuchi

    MICROSYST TECHNOL   Vol. 21 ( 3 )   675 - 681   2015.3

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    DOI： 10.1007/s00542-014-2085-z

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  • Bearingless Motor Utilizing a Permanent Magnet Free Structure for Disposable Centrifugal Blood Pump International journal

    Jun Rao, Wataru Hijikata, Tadahiko Shinshi

    Journal of Advanced Mechanical Design, Systems and Manufacturing   9 ( 3 )   2014.12

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    DOI： 10.1299/jamdsm.2015jamdsm0046

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  • Planar-type micro-electromagnetic actuators using patterned thin film permanent magunets and mesh type coils Reviewed International journal

    Chao Zhi, Tadahiko Shinshi, Mikiko Saito, Kunio Kato

    Sensors and Actuators A: Physical   220   365 - 372   2014.10

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    DOI： 10.1016/j.sna.2014.10.012

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  • Micromagnetization pattering of sputtered NdFeB/Ta multilayered films utilizinglaster assisted heating Reviewed International journal

    Ryogen Fujiwara, Tadahiko Shinshi, Elito Kazawa

    Sensors and Actuators A: Physical   A ( 220 )   298 - 304   2014.10

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    DOI： 10.1016/j.sna.2014.10.011

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  • An Extracorporeal Maglev Centrifugal-type Blood Pump Employing a Permanent Magnet-free Disposable Pump Head and an Outer Magnetic Coupling Mechanism Reviewed

    百瀬洸, 間宮太一, 土方亘, 進士忠彦, 高谷節雄

    精密工学会誌(Web)   Vol. 80 ( No. 1 )   81 - 88   2014.1

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    In the field of centrifugal blood pumps, contactless support of the impeller by a magnetic bearing has been identified as a promising method for reducing blood damage and to enhance durability. We developed a novel blood pump both with a two-degree-of-freedom radial controlled magnetic bearing and a contactless torque transmission mechanism placed in the outer side of a permanent magnet-free impeller. The proposed mechanism can realize not only a smooth secondary flow in the pump, but also a cost effective pump head. The prototype magnetic bearing and magnetic coupling succeeded in the stable levitation and contactless rotation of the impeller both in air and water. The pump can provide a flow rate of 5L/min against a head pressure of more than 350 mmHg. In order to simulate the ventricular assist condition, the prototype pump was connected to a mock systemic circulatory loop including a pulsatile pump. The dynamic stability of the impeller was experimentally verified when the pulsatile pressure was applied during the left ventricular assist.

    DOI： 10.2493/jjspe.80.81

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  • Development of a 2-DOF Controlled Magnetic Drive Actuator for Laser Beam Cutting Reviewed International journal

    Xiaoyou ZHANG, Tadahiko SHINSHI, Teruaki FUKUOKA, Takahiro NAKAI

    Journal of Advanced Mechanical Design, Systems, and Manufacturing   Vol. 7 ( No. 3 )   448 - 457   2013.9

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    DOI： 10.1299/jamdsm.7.448

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  • Multi-pole Magnetization of Thin Film Neodymium Permanent Magnet and Fabrication of a MEMS Linear Motor Using the Magnetized Magnet Reviewed

    FUJIWARA Ryogen, ISHIBASHI Masato, SHINSHI Tadahiko, UEHARA Minoru, HORI Michitaka, FUJIWARA Etsuo

    Journal of the Japan Society for Precision Engineering   Vol. 79 ( No. 8 )   773 - 778   2013.8

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    A high performance Nd2Fe14B/Ta thin film permanent magnet (thin film PM), which not only has a high remnant flux density and a high coercive force similar to those of conventional sintered Nd2Fe14B magnet, but also has higher heat tolerance, was developed. In this report, utilizing this high performance thin film PM, we fabricated a MEMS linear motor consisting of a moving silicon slider including 6μm thick thin film PM, a silicon linear guideway coated with DLC and a two-phased micro coil. In order to increase thrust force, the thin film PM is magnetized with a pole pitch of 0.5mm using a pulsed magnetic field generated by a meander-shaped magnetizing coil. In driving experiments, a 36mm-long stroke, maximum velocity of 1,300mm/s, maximum acceleration of 35.5m/s2 and kinetic friction coefficient of 0.14, were achieved.

    DOI： 10.2493/jjspe.79.773

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  • MedTech Mag-Lev, Single-use, Extracorporeal Magnetically Levitated Centrifugal Blood Pump for Mid-term Circulatory Support Reviewed International journal

    Eiki NAGAOKA, Tatsuki FUJIWARA, Daisuke SAKOTA, Tadahiko SHINSHI, Hirokuni ARAI, Setsuo TAKATANI

    ASAIO Journal 2013   Vol. 59 ( 3 )   246 - 252   2013.5

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    DOI： 10.1097/MAT.0b013e31828a75e3

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  • New Generation Extracorporeal Membrane Oxygenation With MedTech Mag-Lev, a Single-Use, Magnetically Levitated, Centrifugal Blood Pump: Preclinical Evaluation in Calves Reviewed International journal

    Tatsuki Fujiwara, Eiki Nagaoka, Taiju Watanabe, Naoto Miyagi, Takashi Kitao, Daisuke Takota, Taichi Mamiya, Tadahiko Shinshi, Hirokuni Arai, Setsuo Takatani

    Artificial Organs   Vol. 37 ( No. 5 )   447 - 456   2013.5

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    DOI： 10.1111/aor.12006

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  • Development of a maglev lens driving actuator for off-axis control and adjustment of the focal point in laser beam machining Reviewed International journal

    Dongjue He, Tadahiko Shinshi, Takahiro Nakai

    Precision Engineering   Vol. 37 ( 2 )   255 - 264   2013.4

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    DOI： 10.1016/j.precisioneng.2012.09.003

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  • Design and Analysis of a Thin Film Permanent Mgnet Actuated Micro Pump Reviewed International journal

    Chao Zhi, Tadahiko Shinshi, Minoru Uehara

    International Journal of Automation Technology   Vol. 7 ( No. 2 )   196 - 204   2013.3

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    DOI： 10.20965/ijat.2013.p0196

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  • Positioning Characteristics of a MEMS Linear Motor Utilizing a Thin Film Permanent Magnet and DLC Coating Reviewed International journal

    Ryogen Fujiwara, Tadahiko Shinshi, Minoru Uehara

    International Journal of Automation Technology   Vol. 7 ( No. 2 )   148 - 155   2013.3

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    DOI： 10.20965/ijat.2013.p0148

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  • 医療の自動化（人工心臓）

    進士 忠彦

    自動化推進協会   42   8 - 8   2013

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  • A Valveless MEMS Pump Utilizing a Thin Film Permanent Magnet Reviewed International journal

    Chao Zhi, Tadahiko Shinshi, Minoru Uehara

    Key Engineering Materials   Vol. 523-524   551 - 556   2012.11

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    DOI： 10.4028/www.scientific.net/KEM.523-524.551

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  • Adaptive Control of Magnetic Drive Actuator for Laser Cutting Reviewed International journal

    Xiaoyou Zhang, Deqiang Chu, Tadahiko Shinshi, Teruaki Fukuoka, Takahiro Nakai

    Advanced Materials Research   Vol. 591-593   1155 - 1159   2012.11

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    DOI： 10.4028/www.scientific.net/AMR.591-593.1155

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  • Developement of a lens driving maglev actuator for laser beam off-axis cutting and deep piercing Reviewed International journal

    Dongjue HE, Tadahiko SHINSHI, Takahiro NAKAI

    Key Engineering Materials   Vol. 523-524   774 - 779   2012.11

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    DOI： 10.4028/www.scientific.net/KEM.523-524.774

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  • A Micro Pump Driven by a Thin Film Permanent Magnet Reviewed International journal

    Chao ZHI, Tadahiko SHINSHI, Minoru UEHARA

    Journal of Advanced Mechanical Design,Systems,and Manufacturing   Vol. 6 ( No. 7 )   1180 - 1189   2012.10

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    DOI： 10.1299/jamdsm.6.1180

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  • レーザ偏心加工に用いる磁気・静圧ハイブリッドレンズ駆動アクチュエータ Reviewed

    森本 貴景, 進士 忠彦, 中井 孝洋, 福岡 輝章

    日本機械学会論文集   Vol. 78 ( No. 794 )   239 - 252   2012.10

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  • A TWO-DOF Controlled Lens Drive Actuator for Off-Axis Laser Beam Cutting Reviewed

    Yoshihiro Morimoto, Tadahiko Shinshi, Takahiro Nakai

    Journal of Advanced Mechanical Design,Systems,and Manufacturing   Vol. 6 ( No. 6 )   875 - 884   2012.9

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    DOI： 10.1299/jamdsm.6.875

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  • Precision Control of Magnetic Drive Actuator Used for Laser Cutting wirh Compensation of Zero Point of Displacement Sensor Reviewed International journal

    Xiaoyou Zhang, Deqiang Chu, Tadahiko Shinshi, Teruaki Fukuoka, Takahiro Nakai

    Applied Mechanics and Materials   Vol. 220-223   978 - 982   2012.8

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    DOI： 10.4028/www.scientific.net/AMM.220-223.978

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  • 軸方向制御型磁気軸受モータを搭載した小型遠心血液ポンプ Reviewed

    湯本 淳史, 進士 忠彦

    日本機械学会論文集   Vol. 78 ( No. 792 )   345 - 353   2012.8

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  • 体外循環用遠心血液ポンプに用いる磁気軸受の研究

    間宮 太一, 百瀬 洸, 進士 忠彦, 高谷 節雄

    2012年度精密工学会春季大会学術講演会講演論文集   277 - 278   2012.3

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  • Magnetic Bearings—Fundamentals and Applications—

    SHINSHI Tadahiko

    Journal of the Japan Society for Precision Engineering   78 ( 12 )   1054 - 1057   2012

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    DOI： 10.2493/jjspe.78.1054

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  • A cost-effective extracorporeal magnetically-levitated centrifugal blood pump employing a disposable magnet-free impeller Reviewed International journal

    Wataru Hijikata, Taichi Mamiya, Tadahiko Shinshi, Setsuo Takatani

    Proc. IMechE Part H: J.Engineering in Medicine   Vol. 225 ( H12 )   1149 - 1157   2011.12

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    DOI： 10.1177/0954411911422842

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  • ディスポーザブル医療用ポンプ ‐補助循環，人工心肺，人工透析用低コスト・高耐久・クリーンポンプの開発‐

    進士 忠彦

    東京工業大学 ライフ・エンジニアリング機構 第2回シンポジウム 展示・ポスター概要集   58   2011.12

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  • Runout Compensation of Rotary Electrode in Hole Electrical Discharge Machining Reviewed International journal

    Yoshitaka UEYAMA, Tadahiko SHINSHI, Takashi YUZAWA, Shuichi FUJIKAWA, Xiaoyou ZHANG

    Proceeding of The 6th International Conference on Leading Edge Manufacturing in 21st Century   2011.11

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  • A MEMS Linear Motor Utilizing a Thin FilmPermanent Magnet Reviewed International journal

    Tadahiko Shinshi, Masato Ishibashi, Minoru Uehara

    The 20th MAGDA,Proceedings   187 - 190   2011.11

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  • Improving the Speed of Small Deep Hole Electrical Discharge Machining by Combining Rotation of the Electrode with a Rapid-Response International journal

    Dongjue HE, Tadahiko SHINSHI, Xiaoyou ZHANG, Takashi YUZAWA, Tatsushi SATO

    Journal of Advanced Mechanical Design,Systems,and Manufacturing   Vol. 5 ( No. 4 )   284 - 294   2011.10

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    DOI： 10.1299/jamdsm.5.284

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  • MedTech Mag-Levを使用した体外式補助人工心臓治療の低侵襲化

    長岡 英気, 藤原 立樹, 北尾 貴史, 間宮 太一, 染谷 毅, 進士 忠彦, 荒井 裕国, 高谷 節雄

    第49回日本人工臓器学会大会予稿集   Vol. 40 ( No. 2 )   S - 128   2011.10

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  • 新生児，小児並びに成人用体外設置型，シングルユース遠心式補助人工心臓の研究開発

    高谷 節雄, 長岡 英気, 北尾 貴史, 藤原 立樹, 迫田 大輔, 間宮 太一, 土方 亘, 進士 忠彦, 荒井 裕国

    第49回日本人工臓器学会大会予稿集   Vol. 40 ( No. 2 )   S - 41   2011.10

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  • MedTech Mag-Lev, A Single-use Magnetically Levitated Centrifugal Blood Pump for CPB or ECMO

    藤原 立樹, 長岡 英気, 間宮 太一, 北尾 貴史, 横山 直幸, 進士 忠彦, 迫田 大輔, 荒井 裕国, 高谷 節雄

    第49回日本人工臓器学会大会予稿集   Vol. 40 ( No. 2 )   S - 129   2011.10

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  • A TWO-DOF Controlled Lens Drive Actuator for Off-Axis Laser Beam Cutting

    Morimoto Yoshihiro, Shinshi Tadahiko, Okamoto Tatsuki, Nakai Takahiro

    Proceedings of JSPE Semestrial Meeting   2011   657 - 658   2011.9

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    DOI： 10.11522/pscjspe.2011A.0.657.0

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  • Micro Linear Motor Utilizing NdFeB Thin Film Magnet

    Shinshi Tadahiko, Ishibashi Masato, Uehara Minoru

    Proceedings of JSPE Semestrial Meeting   2011   655 - 656   2011.9

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    DOI： 10.11522/pscjspe.2011A.0.655.0

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  • スパッタリング用Nd-Fe-B焼結ターゲットの開発と永久磁石膜を備えたリニアモーターの試作

    上原 稔, 進士 忠彦, 石橋 正登

    第35回日本磁気学会学術講演会講演論文集   27aC - 7   2011.9

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  • MedTechDispo,A Disposable Mag-lev Centrifugal Blood Pump for ECMO or RVAD Reviewed International journal

    Tatsuki Fujiwara, Eiki Nagaoka, Takashi Kitao, Daisuke Sakota, Taichi Mamiya, Tadahiko Shinshi, Hirokuni Arai, Setsuo Takatani

    Abstructs of 19th Congress of the International Society for Rotary Blood Pumps   2011.9

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  • A Centrifugal Blood Pump Using a Single Axis Controlled Magnetic Bearing Motor Reviewed International journal

    Atsushi Yumoto, Tadahiko Shinshi

    Abstructs of 19th Congress of the International Society for Rotary Blood Pumps   2011.9

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  • Less invasive extracorporeal VAD system with MedTech Dispo:a feasibility study in animals Reviewed International journal

    Eiki Nagaoka, Tatsuki Fujiwara, Daisuke Sakota, Takashi Kitao, Taichi Mamiya, Tadahiko Shinshi, Hirokuni Arai, Setsuo Takatani

    Abstructs of 19th Congress of the International Society for Rotary Blood Pumps   2011.9

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  • Cost-effective Disposable Centrifugal Blood Pump Utilizing Maglev Technology International journal

    Tadahiko Shinshi, Wataru Hijikata, Setsuo Takatani

    International Symposium on Technologies against Cancer 2011   O - 1   2011.9

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  • Fault-tolerant strategies for an implantable centrifugal blood pump using a radially controlled magnetic bearing Reviewed International journal

    Chi Nan Pai, Tadahiko Shinshi

    Medical Engineering & Physics   33 ( 8 )   906 - 915   2011.8

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    DOI： 10.1016/j.medengphy.2011.02.004

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  • 小型遠心血液ポンプ用１自由度制御型磁気軸受モータの研究 Reviewed

    湯本 淳史, 上田 学, 進士 忠彦

    日本機械学会論文集   vol. 77 ( no. 779 )   257 - 266   2011.7

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  • 磁気浮上技術の血液ポンプへの応用

    進士 忠彦

    2011.7

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  • 1自由度制御型磁気軸受を用いた遠心血液ポンプの性能評価

    湯本 淳史, 上田 学, 進士 忠彦

    第23回「電磁力関連のダイナミクス」シンポジウム 講演論文集   143 - 146   2011.5

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  • Hole Electrical Discharge Machining Using Runout Compensation of Rotary Electrode in a Magnetic Bearing

    Ueyama Yoshitaka, Shinshi Tadahiko, Yuzawa Takashi, Sato Tatsushi, Zhang Xiaoyou

    Proceedings of JSPE Semestrial Meeting   2011 ( 0 )   21 - 22   2011.3

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    DOI： 10.11522/pscjspe.2011S.0.21.0

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  • Micro Hole Electrical Discharge Machining Assisted by a Multi-DOF and High-Responce Maglev Local Actuator Reviewed International journal

    Dongjue HE, Tadahiko SHINSHI, Xiaoyou ZHANG, Takashi YUZAWA, Tatsushi SATO

    The 6th International Conference on MicroManufacturing ICOMM/2011   ( No. 32 )   107 - 112   2011.3

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  • 高速レーザ加工用磁気・静圧ハイブリッドレンズ駆動アクチュエータの研究

    森本 貴景, 進士 忠彦, 岡本 達樹, 中井 孝洋

    関東学生会 第50回学生員卒業研究発表講演会   155 - 156   2011.3

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  • レーザ加工用レンズの磁気・静圧ハイブリッドアクチュエータによる大ストローク・高速位置決め

    森本 貴景, 進士 忠彦, 岡本 達樹, 中井 孝洋

    第18回「精密工学会 学生会員卒業研究発表講演会論文集」   11 - 12   2011.3

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  • １自由度制御型磁気軸受モータを用いた小型遠心血液ポンプ

    進士忠彦, 湯本 淳史, 上田 学

    2011年度精密工学会春季大会学術講演会講演論文集   461 - 462   2011.3

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  • High Speed Electrical Discharge Machining Using a Combination of 5-DOF Controlled Maglev Actuator and Conventional EDM Machine Reviewed International journal

    Dongjue He, Tadahiko Shinshi, Xiaoyou Zhang, Takashi Yuzawa, Tatsushi Sato

    Proceedings of The Twenty-fifth Annual Meeting of The American Society for Precision Engineering   50   204 - 207   2010.11

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  • A new pulse duplicator with a passive fill ventricle for analysis of cardiac dynamics

    Yoshimasa Yokoyama, Osamu Kawaguchi, Tadahiko Shinshi, Ulrich Steinseifer, Setsuo Takatani

    Journal of Artificial Organs   volume 13 ( Nov4 )   189 - 196   2010.11

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    DOI： 10.1007/s10047-010-0518-8

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  • 仔牛を用いた慢性実験における磁気浮上遠心血液ポンプのインペラ挙動解析

    横山 敬正, 長岡 英気, 進士 忠彦, 荒井 裕国, 高谷 節雄

    第48回日本人工臓器学会大会予稿集   Vol. 39 ( No. 2 )   S - 94   2010.11

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  • ディスポ式磁気浮上型血液遠心ポンプMedTech Dispoの開発状況

    長岡 英気, 染谷 毅, 土方 亘, 横山 敬正, 進士 忠彦, 荒井 裕国, 北尾 貴志, 木村 太郎, 高谷 節雄

    第48回日本人工臓器学会大会予稿集   Vol. 39 ( No. 2 )   S - 121   2010.11

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  • ネオジム薄膜磁石を用いたマイクロリニアモータ

    石橋 正登, 進士 忠彦, バトサイハン バンズラグチ, 堀 充孝, 上原 稔

    第19回MAGDAコンファレンスin札幌 電磁現象および電磁力に関するコンファレンス講演論文集   289 - 292   2010.11

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  • 使い捨てポンプヘッドに永久磁石を用いない体外循環用磁気浮上血液ポンプ

    間宮 太一, 土方 亘, 進士 忠彦, 高谷 節雄

    第48回日本人工臓器学会大会予稿集   Vol. 39 ( No. 2 )   S - 107   2010.11

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  • Electromagnetic-Force-Driving Type Mems Switch Using High Performance NdFeB/Ta Thin Film Permanent Magnet Reviewed International journal

    Masato Ishibashi, Ryo Tanabe, Tadahiko Shinshi, Minoru Uehara

    Proceedings of The Twenty-fifth Annual Meeting of The American Society for Precision Engineering   2010.11

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  • Electrical Discharge Machining of Small Holes Assisted by a High Speed and Multi Dof Controlled maglev Actuator Reviewed International journal

    Yoshitaka UEYAMA, Tadahiko SHINSHI, Tatsushi SATO, Xiaoyou ZHANG

    The 4th International Conference on Positioning Technology   119 - 122   2010.11

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  • 多自由度磁気浮上アクチュエータを用いた高速・高精度放電加工の研究 Reviewed

    進士 忠彦, 上山 吉崇, HeDongjue, 張 暁友, 湯澤 隆, 佐藤 達志

    第14回国際工作機械技術者会議論文集（ポスターセッション論文抜粋版）   72 - 73   2010.10

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  • Medtech Dispo,A Disposable Mag-lev Centrifugal Blood Pump: Two-month in vivo Evaluation of Biocompatibility in LVAD Condition Reviewed International journal

    Eiki Nagaoka, Takeshi Someya, Wataru Hijikata, Yusuke Ando, Yoshimasa Yokoyama, Tadahiko Shinshi, Hirokuni Arai, Setsuo Takatani

    abstruct of 18th Congress of the International Society for Rotary Blood Pumps   67   2010.10

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  • Assessment of hemodynamic as well as thrombogenic performances of a magnetically levitated centrifugal blood pumpbased on the Fast Fourier Transform analysis of impeller dynamics Reviewed International journal

    Yoshimasa Yokoyama, Taro Kimura, Tadahiko Shinshi, Setsuo Takatani

    Abstruct of 18th Congress of the International Society for Rotary Blood Pumps   1   2010.10

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  • A Compensation of Attachment Error of Rotary Electrode for Electrical Discharge Machining by using a Magnetic Bearing

    Ueyama Yoshitaka, He Dongjue, Shinshi Tadahiko, Yuzawa Takashi, Sato Tatsushi, Zhang Xiaoyou

    Proceedings of JSPE Semestrial Meeting   2010 ( 0 )   901‐902 - 902   2010.9

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    DOI： 10.11522/pscjspe.2010A.0.901.0

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  • Development of a Disposable Mgnetically Levitated Centrifugal Blood Pump (MedTech Dispo) Intended for Bridge-to-Bridge Applications Two-Week In Vivo Evaluation Reviewed International journal

    Eiki Nagaoka, Takeshi Someya, Takashi Kitao, Taro Kimura, Tomohiro Ushiyama, Wataru Hijikata, Tadahiko Shinshi, Hiroyuki Arai, Setsuo Takatani

    Artificial Organs   Vol. 34 ( No. 9 )   778 - 783   2010.9

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    DOI： 10.1111/j.1525-1594.2010.01107.x

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  • A Disposable Magnetically Levitated Centrifugal Blood Pump for Extracorporeal Circulation Support―Improvement of Pump Performance for Animal Experiment― Reviewed

    土方亘, 進士忠彦, 染谷毅, 荒井裕国, 高谷節雄, 下河辺明

    精密工学会誌(CD-ROM)   Vol. 76 ( No. 9 )   1064 - 1069   2010.9

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    A disposable magnetically levitated centrifugal blood pump, which aims to be used for from a few days to a few months, has been developed. An impeller is levitated and rotated without contact using a two-degree-of-freedom radial magnetic bearing and a magnetic coupling. Due to 'out-of-step' of the magnetic coupling caused by its insufficient transmittable torque, a previous prototype pump could not yield the required pressure-flow characteristics of 5 L/min against 106 kPa (800 mmHg). The magnetic coupling was redesigned in order to increase the transmittable torque. The stability of the impeller levitation against impact was evaluated through a base excitation test simulating animal experiment and practical use. Applying an impulse excitation of an acceleration of 200 m/s2, the impeller could keep contactless levitation both in the controlled direction and in the passively supported directions. Finally, the animal experiments for one to two weeks showed that no damage and no thrombus formation were found in the pump heads.

    DOI： 10.2493/jjspe.76.1064

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  • Nd-Fe-B/Ta多層永久磁石薄膜の磁気デバイスへの応用とドライエッチングによる微細加工の検討

    上原 稔, 石橋 正登, 進士 忠彦

    第34回日本磁気学会学術講演概要集2010   141   2010.9

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  • 補助人工心臓用小型磁気軸受モータの研究

    上田学, 湯本淳史, 進士忠彦

    2010年度精密工学会秋季大会学術講演会講演論文集   903‐904   2010.9

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  • Disposable MagLev Centrifugal Blood Pump Utilizing a Cone-Shaped Impeller Reviewed International journal

    Wataru Hijikata, Hideo Sobajima, Tadahiko Shinshi, Yasuyuki Nagamine, Suguru Wada, Setsuo Takatani, Akira Shimokohbe

    Artif Organs   Vol. 34 ( No. 8 )   669 - 676   2010.8

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    DOI： 10.1111/j.1525-1594.2009.00957.x

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  • Fault-Tolerance for a Centrifugal Blood Pump using a Two-DOF Controlled Magnetic Bearing Reviewed International journal

    Chi Nan Pai, Wataru Hijikata, Tadahiko Shinshi

    Proceedings of the Twelfth International Symposium on Magnetic Bearings   669 - 673   2010.8

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  • Cost-Effective Magnetic Bearing System using a Single-Use Magnet-Less Rotor for an Extracorporeal Centrifugal Blood Pump Reviewed International journal

    Wataru Hijikata, Taichi Mamiya, Tadahiko Shinshi, Setsuo Takatani

    Proceedings of the Twelfth International Symposium on Magnetic Bearings   654 - 659   2010.8

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  • Cooperative Control of a Maglev Local Actuator with a Conventional EDM Machine for High Speed Electrical Discharge Machining Reviewed International journal

    Dongjue He, Tadahiko Shinshi, Xiaoyou Zhang

    Proceedings of the Twelfth International Symposium on Magnetic Bearings   167 - 172   2010.8

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  • Estimation of the radial force using a disturbance force observer for a magnetically levitated centrifugal blood pump Reviewed International journal

    Chi Nan Pai, T.Shinshi, A.Shimokohbe

    J.Engineering in Medicine   vol. 224 ( Part H )   913 - 924   2010.7

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    DOI： 10.1243/09544119JEIM628

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  • Developement of a novel 5-DOF controlled maglev local actuator for high-speed electrical discharge machining Reviewed International journal

    Dongjue He, Hiroki Morita, Xiaoyou Zhang, Tadahiko Shinshi, Takayuki Nakagawa, Tatsusi Sato, Hidetaka Miyake

    Precision Engineering   34 ( no. 34 )   453 - 460   2010.7

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    DOI： 10.1016/j.precisioneng.2009.11.002

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  • Fault Tolerance of maglev Centrifugal Blood Pump

    Chi Nan Pai, TADAHIKO SHINSHI

    ( No. 10-252 )   412 - 413   2010.5

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  • Electromagnetic-Force-Driving Type RF-MEMS Switch Using High Performance NdFeB/Ta Thin Film Permanent Magnet

    Masato Ishibashi, Ryo Tanabe, TADAHIKO SHINSHI, 上原 稔

    ( No. 10-252 )   704 - 705   2010.5

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  • A Centrifugal Blood Pump with a One-degree-of-freedom Controlled Magnetic Bearing

    Atsushi Yumoto, Manabu Ueda, TADAHIKO SHINSHI

    ( No. 10-252 )   690 - 691   2010.5

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  • An extracorporeal MagLev Centrifugal Blood Pump with a Magnet-Less Disposable Pump Head

    Wataru Hijikata, Taichi Mamiya, TADAHIKO SHINSHI, 高谷 節雄

    ( No. 10-252 )   678 - 679   2010.5

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  • Maglev Actuator for Electrical Discharge Machining (5th Report):Effect of Amplitude and Frequency of Orbital Motion of Electrode on Hole Machining Speed

    Ueyama Yoshitaka, Shinshi Tadahiko, Zhang Xiaoyou, Nakagawa Takayuki, Sato Tatsushi

    Proceedings of JSPE Semestrial Meeting   2010 ( 0 )   575 - 576   2010.3

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    DOI： 10.11522/pscjspe.2010S.0.575.0

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  • Sensorless measurement of pulsatile flow rate using a disturbance force observer in a magnetically levitated centrifugal blood pump during ventricular assistance Reviewed International journal

    Chi Nan Pai, Tadahiko Shinshi, Akira Shimokohbe

    Flow Measurement and Instrumentation   Volume 21 ( 1 )   33 - 39   2010.3

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    DOI： 10.1016/j.flowmeasinst.2009.11.003

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  • MedTech Dispoの研究開発 ～Bridge-to-Bridgeを目的とした日本発，ディスポ式，磁気浮上遠心血液ポンプ

    長谷英気, 染谷毅, 土方亘, 牛山朋彦, 北尾貴史, 進士忠彦, 荒井裕国, 高谷節雄

    第47回日本人工臓器学会大会予稿集   Vol. 38 ( No. 2 )   S - 143   2009.11

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  • Development of a Disposable Mag-Lev Centrifugal Blood Pump (Medtech Dispo) Intended for Bridge-to-Bridge Applications -in Vitro and Initial in Vivo Evalutions International journal

    EIKI NAGAOKA, TAKESHI SOMEYA, WATARU HIJIKATA, TOMOHIRO USHIYAMA, TADAHIKO SHINSHI, HIROKUNI ARAI, SETSUO TAKATANI

    17th Congress of the International Society for Rotary Blood Pumps / PROGRAMME & ABSTRUCTS Handbook   121   2009.10

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  • Quantification of Effects upon Blood Cell Elements by a Rotary Blood Pump Using Flow Cytometry International journal

    HITOMI SHIBASAKI, DANIEL LEE CRANDALL, DAISUKE SAKOTA, EIKI NAGAOKA, TADAHIKO SHINSHI, HIROKUNI ARAI, SETUO TAKATANI

    17th Congress of the International Society for Rotary Blood Pumps/Programme & Abstructs Handbook   125   2009.10

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  • Development of a Disposable Mag-Lev Centrifugal Blood Pump (MedTech Dispo) Intended for One Month Support in Bridge-to-Bridge Applications - In Vitro and Initial In Vivo Evaluations Reviewed International journal

    Takeshi Someya, Mariko Kobayashi, Satoshi Waguri, Tomohiro Ushiyama, Eiki Nagaoka, Wataru Hijikata, Tadahiko Shinshi, Hirokuni Arai, Setsuo Takatani

    Artificial Organs   Vol. 33 ( No. 9 )   704 - 713   2009.9

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    DOI： 10.1111/j.1525-1594.2009.00900.x

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  • Nd2Fe14B基永久磁石薄膜の内部応力低減化技術の検討

    上原稔, 田辺亮, 櫻井淳平, 進士忠彦

    第33回日本磁気学会講演会概要集   12pE - 5   2009.9

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  • Sensorless Measurement of The Pulsatile Flow Through an Implantable Maglev Centrifugal Blood Pump During Ventricular Assistance Reviewed International journal

    Chi Nan Pai, Tadahiko Shinshi, Akira Shimokohbe

    Proceedings of ICROS-SICE International Joint Conference   3335 - 3338   2009.8

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  • Positioning Control of a Cantilever Type Micro Actuator Using High-performance NdFeB/Ta Thin Film Magnets and Built-in Displacement Sensor Reviewed International journal

    Sen Yao, Shunji Goto, Ryo Tanabe, Tadahiko Shinshi, Minoru Uehara, Hitoshi Yamamoto

    Proceedings of the 2009 JSME-IIP/ASME-ISPS Joint Conference on Micromechatronics for Information and Precision Equipment   407 - 408   2009.6

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  • Small Hole Machining Using a Combination of a 5-DOF Controlled Maglev Actuator and a Conventional Electrical Discharge Machine Reviewed International journal

    Yoshitaka UEYAMA, Tadahiko SHINSHI, Xiaoyou ZHANG, Akira SHIMOKOHBE

    Proceedings of the 2009 JSME-IIP/ASME-ISPS Joint Conference on Micromechatronics for Information and Precision Equipment   335 - 336   2009.6

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  • 高性能薄膜ネオジム永久磁石を用いた２自由度駆動型マイクロアクチュエータ

    田辺 亮, 後藤駿治, SEN YAO, 進士忠彦, 上原稔, 山本日登志

    第21回｢電磁力関連のダイナミクス｣シンポジウム講演論文集   93 - 96   2009.5

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  • In Vivo evaluation of a disposable mag-lev centrifugal blood pump: MedTech Dispo Reviewed International journal

    Takeshi Someya, Mariko Kobayashi, Satoshi Waguri, Tomohiro Ushiyama, Eiki Nagaoka, Wataru Hijikata, Tadahiko Shinshi, Hirokuni Arai, Setsuo Takatani

    Abstracts of 2009 ASAIO-IFAO Joint Congress   ( A25 )   195   2009.5

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  • A physiological mock circulation System for obtaining pump performance of rotary blood pump Reviewed International journal

    Yoshimasa Yokoyama, Tadahiko Shinshi, Setsuo Takatani

    Abstracts of 2009 ASAIO-IFAO Joint Congress   ( A19 )   59   2009.5

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  • 小型遠心血液ポンプ用アキシャル制御型磁気浮上モータ

    湯本淳史, 進士忠彦, 張暁友, 下河邉明

    第21回電磁力関連のダイナミクスシンポジウム講演論文集   235 - 238   2009.5

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  • 放電加工用磁気浮上アクチュエータの研究（第４報）－穴加工における電極ジャンプ・加振効果の検討－

    上山吉崇, 張 暁友, 進士忠彦, 下河邉明

    2009年度精密工学会春季大会学術講演会講演論文集   2009 ( 0 )   877 - 878   2009.3

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    本研究の第１～３報では，放電加工の高速・高精度・微細化を目指すため，従来の放電加工機に取り付け可能な5自由度制御型磁気浮上アクチュエータを提案・試作し，径１の円柱電極による穴加工において，従来比20～400%の高速加工を実現した．本報では，放電穴加工における，加工屑排出のための電極のジャンプ効果及び，電極を加工方向と垂直な平面内に円軌道を描きながら加振する効果について，実験的に検討する．

    DOI： 10.11522/pscjspe.2009S.0.877.0

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  • 高性能薄膜ネオジム永久磁石を用いた片持ばり型マイクロアクチュエータの変位測定と位置決め制御

    後藤俊治, 田辺亮, Yao Sen, 櫻井淳平, 進士忠彦, 上原 稔, 山本 日登志

    2009年度精密工学会春季大会学術講演会講演論文集   793 - 794   2009.3

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  • SiN-based Micro Cantilever Actuators Using NdFeB/Ta Permanent Magnetic Thin Film Reviewed International journal

    Sen Yao, Shunji Goto, Junpei Sakurai, TADAHIKO SHINSHI, Minoru Uehara, Hitoshi Yamamoto

    The 4th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems   411 - 414   2009.1

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    DOI： 10.1109/NEMS.2009.5068608

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  • High-speed and High-accuracy EDM of Micro Holes by Using a 5-DOF Controlled Maglev Local Actuator Reviewed International journal

    X. Zhang, Y. Ueyama, Tadahiko Shinshi, Akira Shimokohbe, T. Sato, H. Miyake, T. Nakagawa.

    Materials Science Forum   vol. 626-627   255 - 260   2009

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    DOI： 10.4028/www.scientific.net/MSF.626-627.255

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  • 磁気浮上式補助人工心臓の小型化技術 Reviewed

    進士 忠彦

    日本機械学会誌(日本機械学会)   Vol.112, No.1088   38 - 41   2009

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  • Realization of an Implantable Magnetically Levitated Centrifugal Blood Pump to Assist the Failing Heart Left Ventricle Reviewed International journal

    Chi Nan Pai, Tadahiko Shinshi, Akira Shimokohbe

    The proceedings of the 3rd BIT-TIT joint workshop on Mechanical Engineering   129 - 135   2009

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  • Development of a simple structured, magnetically levitated centrifugal blood pump for bridge-to-bridge applications; The performance, biocompatibility and reliability

    Setsuo Takatani, Takeshi Someya, Hirokuni Arai, Wataru Hijikata, Tadahiko Shinshi

    第37回人工心臓と補助循環懇話会抄録集   1   2009

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  • Average Flow Estimation by Disturbance Observer for a Maglev Centrifugal Blood Pump During Ventricular Assistance

    Pai Chi Nan, 進士忠彦, 高谷節雄, 下河邉明

    第46回日本人工臓器学会大会予稿集   Vol. 37 ( No. 2 )   S - 149   2008.11

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  • 薄膜ネオジム磁石を用いたマイクロアクチュエータの試作と位置決め制御

    上原稔, 後藤駿治, Sen Yao, 進士忠彦, 櫻井淳平, 上原稔, 山本日登志

    電磁現象および電磁力に関するコンファレンス講演論文集   75 - 78   2008.11

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  • Hemolytic characterisitics of a MagLev BioPump: Experimental and Computational Analysis Reviewed International journal

    Wataru Hijikata, Hideo Sobajima, Tadahiko Shinshi, Setsuo Takatani, Akira Shimokohbe

    Abstracts of 16th Congress of the International Society for Rotary Blood Pump   51   2008.10

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  • Development of a disposable Mag-Lev centrifugal blood pump (MedTech Dispo) intended for 1 month support in bridgeto-bridge applications Reviewed International journal

    Takeshi Someya, Wataru Hijikata, Mariko Kobayashi, Tomohiko Ushiyama, Satoshi Waguri, Tadahiko Shinshi, Hirokuni Arai, Setsuko Takatani

    Abstracts of 16th Congress of the International Society for Rotary Blood Pump   2008.10

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  • A one-DOF controlled magnetic bearing for compact centrifugal blood pump Reviewed International journal

    Atsushi Yumoto, Tadahiko Shinshi, Xiayou Zhang, Akira shimokohbe

    Motion and Vibration Selected papers from Movic 2008   357 - 366   2008.9

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  • Micro Cantilever Type Magnetic Actuators Using NdFeB Thin Film

    Sen Yao, Shunji Goto, Junpei Sakurai, Tadahiko Shinshi, Minoru Uehara

    2008年度精密工学会秋季大会学術講演会講演論文集   549 - 550   2008.9

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  • High-speed Electrical Discharge Machining By Using a 5-DOF Controlled Maglev Local Actuator Reviewed International journal

    Xiaoyou ZHANG, Tadahiko SHINSHI, Akira SHIMOKOHBE, Tatsushi SATO, Hidetaka MIYAKE, Takayuki NAKAGAWA

    Journal of Advanced Mechanical Design, Systems, and Manufacturing   Vol. 2 ( No. 4 )   493 - 503   2008.8

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    DOI： 10.1299/jamdsm.2.493

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  • A maglev local actuator for high speed electrical discharge machining Reviewed International journal

    Xiaoyou ZHANG, Tadahiko SHINSHI, Hiroki Morita, Akira SHIMOKOHBE, Tatsushi SATO

    Proceedings of 11th International Symposium on Magnetic Bearings (ISMB11)   261 - 266   2008.8

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  • A Mini-Centrifugal Blood Pump Using 2-DOF Controlled Magnetic Bearing Reviewed International journal

    Tadahiko SHINSHI, Shunji GOTO, Xiaoyou ZHANG, Akira SHIMOKOHBE, Setsuo TAKATANI

    Proceedings of 11th International Symposium on Magnetic Bearings (ISMB11)   274 - 279   2008.8

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  • Disposable Maglev Centrifugal Blood Pump Utilizing Cone-Shaped Impeller Reviewed International journal

    Wataru Hijikata, Tadahiko Shinshi, Akira Shimokohbe, Hideo Sobajima, Setsuo Takatani

    Proceedings of the 2008 IEEE/ASME International Conference on Advanced Intelligent Mechatronics   570 - 575   2008.7

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    DOI： 10.1109/AIM.2008.4601723

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  • A MagLev Centrifugal Blood Pump with a Simple-Structured Disposable Pump Head International journal

    Wataru Hijikata, Tadahiko Shinshi, Junichi Asama, Lichuan Li, Hideo Hoshi, Setsuo Takatani, Akira Shimokohbe

    Artificial Organs   Vol. 32 ( No. 7 )   351 - 540   2008.7

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    DOI： 10.1111/j.1525-1594.2008.00576.x

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  • Development of a Compact Centrifugal Rotary Blood Pump with Magnetically Levitated Impeller Using a Titanium Housing Reviewed International journal

    Chi Nan Pai, Tadahiko Shinshi, Junichi Asama, Setsuo Takatani, Akira Shimokohbe

    Journal of Advanced Mechanical Design, Systems, and Manufacturing   Vol. 2 ( No. 3 )   345 - 355   2008.6

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    DOI： 10.1299/jamdsm.2.343

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  • 高速放電加工用磁気浮上アクチュエータにおける新給電機構

    張 暁友, 進士忠彦, 森田 浩基, 下河邉 明

    第20回「電磁力関連のダイナミクス」シンポジウム論文集   363 - 366   2008.5

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  • 小型遠心血液ポンプ用１自由度制御型磁気浮上モータ

    湯本 淳史, 進士忠彦, 張暁友, 下河辺明

    第20回「電磁力関連のダイナミクス」シンポジウム論文集   129 - 132   2008.5

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  • 医療機器への超高速・非接触軸受技術の応用

    進士忠彦

    平成20年電気学会全国大会講演論文集   Vol. 5 ( No. )   2008.3

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  • 磁気浮上遠心血液ポンプMag-Lev Bio-Pump の開発：CFD によるポンプ内流れの解析

    横山直幸, 土方 亘, 進士忠彦, 高谷節雄, 大澤英之, 傍島秀雄, 藤本哲男

    第36 回人工心臓と補助循環懇話会抄録集若手フォーラム基礎部門Ⅱ   Vol. ( No. )   13   2008.3

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  • A Compact Aerostatic Spindle Integrated with an Axial Positioning Actuator for Micro and Ultra-precision Machine Tool Reviewed International journal

    Tadahiko SHINSHI, Kaiji SATO, Akira SHIMOKOHBE

    International Journal of Automation Technology   Vol. 2 ( No. 1 )   56 - 63   2008.1

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    DOI： 10.20965/ijat.2008.p0056

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  • Realization of a MAGLEV Centrifugal Ventricular Assist Device Using Titanium Housing Reviewed International journal

    Tadahiko Shinshi, Akira Shimokohbe, Junichi Asama, Patrick Keogh, Setsuo Takatani

    Abstract of 15th Congress of the ISRBP   92   2007.12

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  • High-speed Electrical Discharge Machining with a 5-DOF Controlled Maglev Actuator Reviewed International journal

    Xiaoyou ZHANG, Tadahiko SHINSHI, Akira SHIMOKOHBE, Yoshihito IMAI, Hidetaka MIYAKE, Takayuki NAKAGAWA

    Proceedings of the 4th International Conference on Leading Edge Manufacturing in 21st Century（LEM21）   Vol. ( No. )   191 - 196   2007.11

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  • 血液接触部が使い捨て可能な磁気浮上血液ポンプ

    土方亘, 進士忠彦, 下河邉明, 傍島秀雄, 高谷節雄

    第50回自動制御連合講演会講演論文集   Vol. ( No. )   560 - 565   2007.11

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  • Micro Electrical Discharge Machining Using a 5-DOF Controlled Maglev Actuator Reviewed International journal

    X. ZHANG, T. SHINSHI, H. ENDO, A. SHIMOKOHBE, Y. IMAI, H. MIYAKE, T. NAKAGAWA

    Proceedings of the Twenty-second Annual ASPE Meeting   Vol. 42 ( No. )   36 - 39   2007.10

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  • 放電加工用磁気浮上アクチュエータの研究（第２報）－アクチュエータの高速・高精度化と放電加工への応用－

    張 暁友, 進士 忠彦, 遠藤 弘樹, 森田 浩基, 下河辺明, 今井 祥人, 三宅 英孝, 中川 孝幸

    2007年度精密工学会秋季大会学術講演会講演集   155 - 156   2007.9

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  • 放電加工用磁気浮上アクチュエータの研究（第３報）－アクチュエータバンド幅，加工コントローラゲインと加工速度の関係－

    森田 浩基, 張 暁友, 進士 忠彦, 遠藤 弘樹, 下河邉 明, 今井 祥人, 三宅 英孝, 中川 孝幸

    2007年度精密工学会秋季大会学術講演会講演集   Vol. ( No. )   157 - 158   2007.9

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  • 小型遠心血液ポンプ用１自由度制御型磁気軸受の研究

    湯本 淳史, 進士 忠彦, 張 暁友, 下河邉 明, 高谷 節雄

    2007年度精密工学会秋季大会学術講演会   159 - 160   2007.9

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  • Development of a 5-DOF Controlled, Wide-Bandwidth, High-Precision Maglev Actuator for Micro Electrical Discharge Machining Reviewed International journal

    Xiaoyou ZHANG, Tadahiko SHINSHI, Hiroki ENDO, Akira SHIMOKOHBE, Yoshihito IMAI, Hidetaka MIYAKE, Takayuki NAKAGAWA

    Proceedings of the 2007 IEEE International Conference on Mechatronics and Automation   Vol. ( No. )   2877 - 2882   2007.8

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    DOI： 10.1109/ICMA.2007.4304016

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  • Centrifugal Blood Pumps Using Maglev Technology Reviewed International journal

    Tadahiko SHINSHI, Wataru HIJIKATA, Junichi ASAMA, Xiaoyou ZHANG, Akira SHIMOKOHBE, Setsuo TAKATANI

    Proceedings of: second TIT-BIT joint workshop on mechanical engineering   Vol. ( No. )   55 - 61   2007.8

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  • 磁気浮上遠心血液ポンプのロータダイナミクス

    進士忠彦, 高谷 節雄, 朝間淳一, 下河邉明

    第19回「電磁力関連のダイナミクス」シンポジウム講演論文集   Vol. ( No. )   354 - 355   2007.5

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  • Dynamic Characteristics of a Magnetically Levitated Impeller in a Centrifugal Blood Pump Reviewed International journal

    Junichi Asama, Tadahiko Shinshi, Hideo Hoshi, Setsuo Takatani, Akira Shimokohbe

    Artificial Organs   Vol. 31 ( No. 4 )   301–311 - 311   2007.4

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    DOI： 10.1111/j.1525-1594.2007.00378.x

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  • Hemolytic Performance of a MagLev Disposable Rotary Blood Pump (MedTech Dispo): Effects of MagLev Gap Clearance and Surface Roughness Reviewed International journal

    Hideo Hoshi, Junichi Asama, Wataru Hijikata, Chikara Hara, Tadahiko Shinshi, Toshitaka Yasuda, Katsuhiro Ohuchi, Akira Shimokohbe, Setsuo Takatani

    Artificial organs   30 ( 12 )   949 - 954   2006.12

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    DOI： 10.1111/j.1525-1594.2006.00332.x

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  • 重症心不全のデバイス・治療戦略：長期補助・社会復帰を目指して Reviewed

    高谷節雄, 大内克洋, 星英男, 横山敬正, 傍島秀雄, 中山歩美, 進士忠彦, 朝間淳一, 土方亘, 原力, 下河邉明

    2006年日本定常流研究会・第12回日本臨床補助人工心臓研究会 プログラム・抄録集   Vol. ( No. )   合同パネルディスカッション(2)   2006.11

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  • 磁気浮上型遠心血液ポンプ MedTech Heartの小型化

    原 力, 進士忠彦, 朝間淳一, 土方亘, 下河邉明, 星英男, 高谷節雄

    第４４回日本人工臓器学会予稿集   Vol. 第35巻 ( No. 第2号 )   G - 076   2006.11

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  • 小児用循環補助を目的とした低充填量遠心型血液ポンプ(TinyPump)の開発研究

    大内克洋, 但馬健一, 星英男, 木戸和幸, 渡辺宣夫, 岩崎秦彦, 進士忠彦, 石原一幸, 吉川雅治, 鵜垣伸也, 石野幸三, 佐野俊二, 中谷武嗣, 許 俊鋭, 富永隆治, 高谷節雄

    第４４回日本人工臓器学会予稿集   Vol. 第35巻 ( No. 第2号 )   G - 079   2006.11

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  • 磁気浮上型遠心ポンプMedTech Heartのチタンフレーム化

    朝間淳一, 進士忠彦, 原力, 土方亘, 下河邉明, 星英男, 高谷節雄

    第４４回日本人工臓器学会予稿集   Vol. 第35巻 ( No. 第2号 )   G - 093   2006.11

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  • ディポーザブル磁気浮上血液ポンプ：MedTech Dispo

    土方亘, 朝間淳一, 進士忠彦, 下河邉明, 傍島秀雄, 星英男, 大内克洋, 高谷節雄

    2006年日本定常流研究会・第12回日本臨床補助人工心臓研究会 プログラム・抄録集   Vol. ( No. )   一般演題(3)   2006.11

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  • 小児循環補助用低充填量遠心血液ポンプ（TinyPump）の開発現状

    大内克洋, 横山直幸, 鈴木正明, 星英男, 渡辺宣夫, 木戸和幸, 岩崎泰彦, 進士忠彦, 藤本哲男, 石原一彦, 吉川雅治, 鵜垣伸也, 佐野俊二, 中谷武嗣, 許 俊鋭, 富永隆治, 高谷節雄

    ２００６年日本定常流研究会・第１２回日本臨床補助人工心臓研究会 プログラム・抄録集   一般演題(5)   2006.11

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  • 指定発言：小児から成人に適用可能な超小型、植え込み式磁気浮上遠心型人工心臓の現況

    高谷節雄, 進士忠彦

    第44回日本人工臓器学会大会予稿集   Vol. 第35巻 ( No. 第2号 )   S - 31   2006.10

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  • A 5-DOF Controlled Maglev Actuator for Electrical Discharge Machining Reviewed International journal

    Xiaoyou ZHANG, Tadahiko SHINSHI, Hiroki ENDO, Go KAJIWARA, Akira SHIMOKOHBE, Yoshihito IMAI, Hidetaka MIYAKE, Takayuki NAKAGAWA

    Proceedings of the 2nd International Conference on Positioning Technology (ICPT 2006)   Vol. ( No. )   20 - 21   2006.10

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    This paper describes a novel 5-DOF controlled maglev actuator for electrical discharge machining. The actuator is compact enough to be attached to conventional electrical discharge machines. This actuator can not only improve machining speed and machining accuracy, but can also be used to realize micromachining. The developed actuator has better than 1mm positioning resolution, a bandwidth greater than 100Hz in the 5-DOF directions, and a positioning stroke of 2 mm in the Z direction. Moreover, the positioning performance of the maglev actuator during electrical discharge was verified and it was used to produce a hole of f0.6mm.

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  • Simple-structured Disposable Centrifugal Blood Pump Using Maglev Technology Reviewed International journal

    Wataru Hijikata, Tadahiko Shinshi, Akira Shimokohbe, Hideo Hoshi, Setsuo Takatani, Junichi Asama

    14th Congress of the International Society for Rotary Blood Pumps(ISRBP)   Vol. ( No. )   43   2006.9

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  • Development of Medtech Heart With Self-sensing Mechanism Through an Impeller Lateral Force Reviewed International journal

    H. Hoshi, J. Asama, Wataru Hijikata, C. Hara, Y. Yokoyama, T. Shinshi, A. Shimokohbe, S. Takatani

    14th Congress of the International Society for Rotary Blood Pumps(ISRBP)   Vol. ( No. )   72   2006.9

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  • Impeller Dynamic Behavior of Maglev Centrifugal Blood Pump Reviewed International journal

    Junichi Asama, Tadahiko Shinshi, Hideo Hoshi, Setsuo Takatani, Akira Shimokohbe

    14th Congress of the International Society for Rotary Blood Pumps(ISRBP)   Vol. ( No. )   115   2006.9

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  • Blood Plasma Bearing For Rotary Blood Pumps Reviewed International journal

    Hajime Hoshi, Junichi Asama, Tadahiko Shinshi

    Abstract of 14th Congress of the International Society for Rotary Blood Pumps   Vol. ( No. )   67   2006.8

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  • 磁気浮上遠心血液ポンプ Reviewed

    進士忠彦, 朝間淳一, 土方亘, 下河邉明, 星英男, 高谷節雄

    第１回医工連携・バイオメカニクス国際シンポジウム(1st International Medical-Engineering Joint Biomechanics   Vol. ( No. )   1 - 4   2006.7

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  • Anti-Thrombogenic and self-sensing Mag-Lev Heart Pump to Promote Heart Recovery or Bridge to Optimum Therapies Reviewed International journal

    Hideo Hosh, Junichi Asama, Chikara Hara, Wataru Hijikata, Tadahiko Shinshi, Akira Shimokohbe, Setsuo Takatani

    Abstract of ASAIO’s 52nd Annual Conference   Vol. 52 ( No. 2 )   30A   2006.6

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  • Pediatric Rotary Blood Pump (Tiny-Pump) with a Superlow Priming Volume Reviewed International journal

    Setuo Takatani, Hideo Hoshi, Kazuyuki Kido, Katsuhiro Ohuchi, Yasuhiko Iwasaki, Tadahiko Shinshi, Kazuhiko Ishihara, Masaharu Yoshinaga, Shuji Sano, Takeshi Nakatani, Shunei Kyo, Ryuji Tominaga

    Abstract of ASAIO’s 52nd Annual Conference, Chicago, Japan   Vol. 52 ( No. 2 )   50A   2006.6

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  • Magnetically Suspended Disposable Centrifugal Blood Pump with Simple-structured and Cost-effective Disposable Pump Head Reviewed International journal

    Wataru Hijikata, Tadahiko Shinshi, Junichi Asama, Chikara Hara, Akira Shimokohbe, Hideo Hoshi, Setsuo Takatani

    Abstract of ASAIO’s 52nd Annual Conference   Vol. ( No. )   60A   2006.6

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  • Detection of Left Ventricle Function From a Magnetically Levitated Impeller Behavior Reviewed International journal

    Hideo Hoshi, Junichi Asama, Chikara Hara, Wataru Hijikata, Tadahiko Shinshi, Akira Shimokohbe, Setsuo Takatani

    Artificial Organs   Vol. 30 ( No. 5 )   377 - 383   2006.5

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    DOI： 10.1111/j.1525-1594.2006.00229.x

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  • Computational fluid dynamics (CFD) analysis of the pediatric tiny centrifugal blood pump (Tiny pump) Reviewed International journal

    Kazuyuki Kido, Hideo Hoshi, Nobuo Watanabe, Hiroyuki Kataoka, Katsuhiro Ohuchi, Junichi Asama, Tadahiko Shinshi, Masaharu Yoshikawa, Setsuo Takatani

    Artificial Organs   30 ( 5 )   391 - 398   2006.5

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    DOI： 10.1111/j.1525-1594.2006.00231.x

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  • 数値流体力学解析による小児用小型遠心血液ポンプの抗血栓・抗溶血性能の向上

    木戸和幸, 星英男, 渡辺宣夫, 片岡弘之, 大内克洋, 朝間淳一, 進士忠彦, 吉川雅治, 高谷節雄

    第４５回日本生体医工学大会論文集   408   2006.5

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  • Detection of left ventricular function from the Mag-Lev impeller behavior

    Hideo Hoshi, Junichi Asama, Chikara Hara, Wataru Hijikata, Tadahiko Shinshi, Akira Shimokohbe, Setsuo Takatani

    Artificial Organs   30 ( 5 )   160 - 167   2006.5

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  • 新機能評価機能を備えた磁気浮上遠心血液ポンプシステムの研究

    星英男, 朝間淳一, 原力, 土方亘, 進士忠彦, 下河邉明, 高谷節雄

    第４５回日本生体医工学大会論文集   Vol. 44 ( No. )   584   2006.5

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  • Third-generation Blood Pumps With Mechanical Noncontact Magnetic Bearings Reviewed International journal

    Hideo Hoshi, Tadahiko Shinshi, Setsuo Takatani

    Artif Organs   vol. 30 ( No. 5 )   324 - 338   2006.4

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    DOI： 10.1111/j.1525-1594.2006.00222.x

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  • Control of an XY Nano-Positioning Table for a Compact Nano-Machine Tool Reviewed International journal

    Guilherme Jorge MAEDA, KAIJI SATO, Hitoshi HASHIZUME, Tadahiko SHINSHI

    JSME International Journal Series C   Vol. 49 ( No. 1 )   21 - 27   2006.3

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    DOI： 10.1299/jsmec.49.21

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  • 超低充填量，低流量制御性，耐久性，抗血栓性に優れた小型遠心血液ポンプの開発：小児及び幼児への応用を目指して

    高谷 節雄, 星 英男, 但馬 健一, 木戸 和幸, 大内 克洋, 岩崎 泰彦, 朝間 淳一, 土方亘, 原 力, 進士 忠彦, 下河邉明, 石原 一彦, 吉川雅治, 鵜垣伸也, 大崎悟, 石野幸三, 佐野峻二, 中谷武嗣, 五條 理志, 許 俊鋭

    第３４回人工心臓と補助循環懇話会抄録集   Vol. ( No. )   60   2006.3

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  • 磁気軸受を用いたディスポーザブル血液ポンプの研究

    土方亘, 進士忠彦, 下河邉明, 高谷節雄, 星英男

    平成１８年精密工学会春季大会講演論文集   Vol. ( No. )   929 - 930   2006.3

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  • 人工心臓を支える磁気浮上技術

    星英男, 大内 克洋, 片岡 弘之, 高谷節雄, 朝間淳一, 土方亘, 原 力, 進士忠彦, 下河邉明

    第３４回人工心臓と補助循環懇話会抄録集   Vol. ( No. )   43   2006.3

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  • 放電加工用磁気浮上アクチュエータの研究

    梶原剛, 遠藤弘樹, 進士忠彦, 今井祥人, 三宅英考, 中川孝幸, 下河邉明

    2006年度精密工学会春季大会学術講演会講演論文集   Vol. ( No. )   865 - 866   2006.3

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  • マイクロ化を目指した新しい磁気軸受構造の提案と試作（第３報）

    進士忠彦, 下河邉明

    平成１８年精密工学会春季大会講演論文集   929 - 930   2006.3

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  • A Compact Highly Efficient and Low Hemolytic Centrifugal Blood Pump With a Magnetically Levitated Impeller Reviewed International journal

    Junichi Asama, Tadahiko Shinshi, Hideo Hoshi, Setsuo Takatani, Akira Shimokohbe

    Artificial Organs   Vol. 30 ( No. 3 )   160–167 - 167   2006.2

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    DOI： 10.1111/j.1525-1594.2006.00202.x

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  • 磁気浮上型ディスポーザブル遠心血液ポンプの研究

    星英男, 朝間淳一, 原力, 土方亘, 進士忠彦, 下河邉明, 高谷節雄

    日本定常流ポンプ研究会   Vol. ( No. )   -   2005.11

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  • コンパクト磁気浮上型遠心血液ポンプ

    朝間淳一, 進士忠彦, 原 力, 土方亘, 下河邉明, 星 英男, 高谷節雄

    日本定常流ポンプ研究会   Vol. ( No. )   -   2005.11

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  • An active aerostatic spindle with an axial positioning actuator for machining ultra-micro scale structure Reviewed International journal

    Tadahiko Shinshi, Yusuke Inami, Hitoshi Hashizume, KAIJI SATO, Akira Shimokohbe

    Proceedings of JSME Int. Conf. LEM 21   Vol. ( No. )   1016 - 1019   2005.10

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  • Sensorless Micro-magnetic bearing International journal

    J. Kuroki, T. Shinshi, L. Li, A. Shimokohbe

    Proc. BIT-TITech Joint Workshop on Mechanical Engineering, Beijing, China   10 - 17   2005.8

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  • センサレスマイクロ磁気軸受モータ

    黒木次郎, 進士忠彦, 下河邉明

    電気学会産業応用部門大会講演論文集Ⅲ   Vol. ( No. )   323 - 324   2005.8

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  • 磁気軸受の人工心臓への応用

    進士忠彦, 朝間淳一, 下河邉明, 星英男, 高谷節雄

    平成17年電気学会産業応用部門大会 シンポジウム講演論文集Ⅲ   Vol. ( No. )   73 - 76   2005.8

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  • Disposable, Maglev Centrifugal Blood Pump: Design and In Vitro Performance Reviewed International journal

    Hideo HOSHI, Junichi ASAMA, Tadahiko SHINSHI, Katsuhiro OHUCHI, Tomohiro MIZUNO, Hirokuni ARAI, Akira SHIMOKOHBE, Setsuo TAKATANI, Makoto NAKAMURA

    Artificial Organs   Vol. 29 ( No. 7 )   520 - 526   2005.7

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    DOI： 10.1111/j.1525-1594.2005.29087.x

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  • Miniaturization of a one-axis-controlled magnetic bearing Reviewed International journal

    Jiro Kuroki, Tadahiko Shinshi, Lichuan Li, Akira Shimokohbe

    Precision Engineering   Vol. 29 ( No. 2 )   208 - 218   2005.4

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    DOI： 10.1016/j.precisioneng.2004.08.001

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  • 超精密XY位置決めテーブルシステムの制御性能向上

    佐藤海二, ギレルメ・ジョルジ・前田, 橋詰 等, 進士忠彦

    2005年度精密工学会春季大会学術講演会講演論文集   Vol. ( No. )   1127 - 1128   2005.3

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  • 磁気浮上遠心ポンプ型補助人工心臓の研究

    朝間淳一, 進士忠彦, 原力, 星英男, 高谷節雄, 下河邉明

    東京工業大学 ベンチャービジネス・ラボラトリーシンポジウム２００４予稿集   Vol. ( No. )   4 - 7   2005.3

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  • ３次元マイクロデバイス創成用コンパクトナノ加工機の開発

    進士忠彦, 橋詰等, 佐藤海二

    ＮＥＤＯ平成16年度研究助成事業成果報告会予稿集   Vol. ( No. )   302 - 307   2005.1

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  • Magnetically Suspended Centrifugal Blood Pump With a Radial Magnetic Driver Reviewed International journal

    Hideo Hoshi, Kiroyuki Katakoa, Katsuhiro Ohuchi, Jun-ichi Asama, Tadahiko Shinshi, Akira Shimokohbe, Setsuo Takatani

    ASAIO Journal   Vol. 51 ( No. 1 )   60 - 64   2005

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    DOI： 10.1097/01.MAT.0000151148.72891.55

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  • Feasibility of a Miniature Centrifugal Rotary Blood Pumps for Low-Flow Circulation in Children and Infants Reviewed International journal

    Setsuo TAKATANI, Hideo HOSHI, Kenichi TAJIMA, Katsuhiro OHUCHI, Makoto NAKAMURA, Junichi ASAMA, Tadahiko SHINSHI, Masaharu YOSHIKAWA

    ASAIO Journal 2005   Vol. 51 ( No. 5 )   557 - 562   2005

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  • A Planar Nano-positioning Table System for Advanced Machine Tools International journal

    Yoshioka, H., Komatsu, K., Hashizume, H., Shinno, H., Shinshi, T., Sato, K.

    Proceedings of ASPE’s 19th Annual Meeting   Vol. 34 ( No. )   64 - 67   2004.10

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  • A Precision Active Aerostatic Spindle with an Axial Positioning Actuator International journal

    T.Shinshi, T.Hayashi, Y.Inami, H.Hashizume, K.Sato

    Proceedings of ASPE’s 19th Annual Meeting   177 - 180   2004.10

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  • X-Y-θ Nano-Positioning Table System for a Mother Machine Reviewed International journal

    H.Shinno, H.Hashizume, H.Yoshioka, K.Komatsu, T.SHINSHI, K.SATO

    Annals of the CIRP   Vol. 53 ( No. 1 )   337 - 340   2004.8

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    DOI： 10.1016/S0007-8506(07)60711-2

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  • A Precision Aerostatic Spindle Incorporating an Axial Positioning Function for a Compact Nano-machine Tool Reviewed International journal

    Tadahiko SHINSHI, Toshiki HAYASHI, Hitoshi HASHIZUME, Kaiji SATO, Akira SHIMOKOHBE

    Proceedings of the 1st International Conference on Positioning Technology   Vol. ( No. )   449 - 450   2004.6

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  • A Full State Feedback Control of Active Magnetic Bearings by Measuring the Current Change Rate Alone Reviewed International journal

    L. Li, T. Shinshi, Akira Shimokohbe

    IEEE Transactions on Magnetics   Vol. 40 ( No. 6 )   3512 - 3517   2004

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    DOI： 10.1109/TMAG.2004.836295

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  • A New Design for a Compact Centrifugal Blood Pump with a Magnetically Levitated Rotor Reviewed International journal

    J. Asama, T. Shinshi, H. Hoshi, S. Takatani, Akira Shimokohbe

    ASAIO Journal   50 ( 6 )   550 - 556   2004

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    DOI： 10.1097/01.MAT.0000144364.62671.5A

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  • スピンドルの静電容量変化を利用した軸方向変位計測

    進士 忠彦

    日本機械学会第5回生産加工・工作機械部門講演会講演論文集   73 - 74   2004

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  • A micro magnetic bearing with a 2mm-diameter rotor and its performance Reviewed International journal

    jiro kuroki, Tadahiko Shinshi, Lichuan Li, Akira Shimokohbe

    Proceedings of the 9th International Symposium on Magnetic Bearing (ISMB9), The University of Kentucky, USA   Vol. ( No. )   2004

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  • 遠心血液ポンプ用コンパクト磁気軸受の開発

    星 英男, 朝間 淳一, 進士忠彦, 下河辺明, 片岡 弘之, 高谷節雄

    第32回人工心臓と補助循環懇話会学術集会講演論文集   Vol. ( No. )   2004

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  • A Planar Nano-Positioning Table System for Advanced Machine Tools Reviewed International journal

    Hayato Yoshioka, Kou Komatsu, Hitoshi Hashizume, Hidenori Shinno, Tadahiko Shinshi, Kaiji Sato

    Proc. ASPE 2004 Annual Conference   Vol. ( No. )   177 - 180   2004

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  • 軸方向位置決め機能を有する静圧スピンドルの研究

    進士忠彦, 林俊樹, 井波友輔, 橋詰等, 佐藤海二, 下河邉明

    ２００４年度精密工学会秋季大会学術講演会講演論文集   Vol. ( No. )   809 - 810   2004

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  • Development of a Pediatric Centrifugal Blood Pump Reviewed International journal

    H. Hoshi, K. Tajima, K. Ohuchi, M. Yoshikawa, J. Asama, T. Shinshi, T. Sakamoto, S. Takatani

    Proccedings of Heart Failure & Rotary Blood Pump Summit   Vol. ( No. )   174   2004

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  • 人工心臓用コンパクト磁気軸受システムの研究（第２報）

    朝間淳一, 進士忠彦, 原力, 星英男, 高谷節雄, 下河邉明

    ２００４年度精密工学会秋季大会学術講演会講演論文集   Vol. ( No. )   812 - 813   2004

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  • Disposable Magnetic Bearing Centrifugal Blood Pump For Extracorporeal Circulation Support Reviewed International journal

    H. Hoshi, K. Ohuchi, J. Asama, T. Shinshi, A. Shimokohbe, T. Sakamoto, T. Takatani

    Proceedings of Heart Failure & Rotary Blood Pump Summit   Vol. ( No. )   20   2004

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  • 静電容量変化を利用した軸方向変位計測法による１自由度制御型磁気軸受

    黒木次郎, 進士忠彦, 下河邉明

    第47回自動制御連合講演会講演論文集   Vol. ( No. )   319   2004

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  • 小型磁気軸受を用いた遠心血液ポンプの研究開発

    星英男, 安田利貴, 片岡弘之, 大内克洋, 中村真人, 朝間淳一, 進士忠彦, 下河邉明, 荒井祐国, 坂本徹, 高谷節雄

    ２００４年日本定常ポンプ研究会予稿集   Vol. ( No. )   7   2004

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  • 磁気軸受を用いたディスポ型体外設置用遠心血液ポンプの開発

    星英男, 安田利貴, 片岡弘之, 大内克洋, 渡邊宣夫, 中村真人, 荒井裕国, 坂本徹, 高谷節雄, 朝間淳一, 原力, 進士忠彦, 下河邉明

    電気学会研究会資料，リニアドライブ研究会   Vol. ( No. )   LD-04-71   2004

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  • 光磁化デバイス

    進士忠彦, 下河辺明, 宗片比呂夫, 野口浩史, Jamil Kaosar

    第５１回応用物理学関連連合講演会シンポジウム概要   Vol. ( No. )   55   2004

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  • A Precision Active Aerostatic Spindle with an Axial Positioning Actuator Reviewed International journal

    Tadahiko SHINSHI, Toshiki HAYASHI, Yusuke INAMI, Hitoshi HASHIZUME, Kaiji SATO, Akira SHIMOKOHBE

    Proc. ASPE 2004 Annual Conference   Vol. ( No. )   64 - 67   2004

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  • A combined repetitive control for precision rotation of magnetic bearing Reviewed

    XY Zhang, T Shinshi, LC Li, A Shimokohbe

    PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY   27 ( 3 )   273 - 282   2003.7

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    DOI： 10.1016/S0141-6359(03)00003-5

    Web of Science

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  • Stabilization of one degree-of-freedom control type levitation table with permanent magnet repulsive forces Reviewed

    KB Choi, YG Cho, T Shinshi, A Shimokohbe

    MECHATRONICS   13 ( 6 )   587 - 603   2003.7

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    DOI： 10.1016/S0957-4158(02)00032-6

    Web of Science

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  • Compensation of rotor imbalance for precision rotation of a planar magnetic bearing rotor Reviewed

    L Li, T Shinshi, C Iijima, Zhang, X, A Shimokohbe

    PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY   27 ( 2 )   140 - 150   2003.4

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  • Asymptotically exact linearizations for active magnetic bearing actuators in voltage control configuration Reviewed

    LC Li, T Shinshi, A Shimokohbe

    IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY   11 ( 2 )   185 - 195   2003.3

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1109/TCST.2003.809241

    Web of Science

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  • 精密磁気軸受の研究（第５報）―モータ電磁加振力の低減と電磁振動の抑制―

    進士忠彦, 張 暁友, 下河邉 明

    2003年度精密工学会春季大会学術講演会講演論文集   Vol. ( No. )   640   2003.3

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  • Optically driven microcantilever-type actuator using photo-enhanced magnetization of a GaAs-Fe composite film, Applied Physics Letter

    T. Shinshi, F. Kato, A. Shimokohbe, H. Munekata, H. Noguchi

    Applied Physics Letter   83 ( 16 )   3425 - 3427   2003

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    DOI： 10.1063/1.1621456

    Scopus

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  • Micro-actuator using light-enhanced magnetization

    Shinshi Tadahiko, Kato Fumihito, Shimokohbe Akira, Munekata Hiroo, Noguchi Kouji

    Proceedings of JSPE Semestrial Meeting   2003 ( 0 )   532 - 532   2003

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    Publisher：The Japan Society for Precision Engineering  

    DOI： 10.11522/pscjspe.2003A.0.532.0

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  • マイクロ化を目指した新しい磁気軸受構造の提案と試作

    黒木次郎, 進士忠彦, 李黎川, 下河辺明

    ２００３年度精密工学会春季大会学術講演会講演論文集   Vol. ( No. )   556   2003

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  • A compact magnetic bearing system for centrifugal ventricular assist devices Reviewed International journal

    Y. Asama, T. Shinshi, S. Takatani, L. LI, A. Shimokohbe

    Proc. 7th International Symposium on Magnetic Suspension Technology, 27-30 Oct. 2003   Vol. ( No. )   117 - 122   2003

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  • 光・磁気駆動型マイクロアクチュエータの提案

    進士忠彦, 加藤史仁, 下河辺明, 宗片比呂夫, 野口浩史

    ２００３年度精密工学会秋季大会学術講演会講演論文集   Vol. ( No. )   434   2003

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  • Investigation of the origin of light-enhanced magnetization in GaAs-Fe composite structures Reviewed International journal

    A. T. M. L. Jamil, H. Munekata, N. Noguchi, Y. Kohara, T. Kondo, K. Kato, T. Shinshi, A. Shimokohbe

    Proc. 22nd Electronic Materials Symposium   Vol. ( No. )   2003

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  • Application of Light-Enhanced Magnetization to Micro-actuator Reviewed International journal

    T. Shinshi, F. Kato, A. Shimokohbe, N. Noguchi, H. Munekata

    9th Physics and Application of Spine-related Phenomena in Semiconductor (PASPS 9), The University of Tokyo, 6.11-12   Vol. ( No. )   215 - 217   2003

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  • 遠心血液ポンプにおけるジャーナル軸受によるインペラの非接触化

    片岡弘之, 渡邉宣夫, 飯田智也, 大内克洋, 中村真人, 進士忠彦, 高谷節雄

    第４２回日本エム・イー学会大会講演論文集，札幌   Vol. ( No. )   2003

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  • マイクロと精密を目指したものづくりの研究

    下河辺明, 進士忠彦

    日本機械学会，情報・知能・精密機器部門ニュースレター   Vol. ( No. )   7 - 8   2003

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  • マイクロ化を目指した新しい磁気軸受構造の提案と試作（第２報)

    黒木次郎, 進士忠彦, 李黎川, 下河辺明

    ２００３年度精密工学会秋季大会学術講演会講演論文集   Vol. ( No. )   432   2003

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  • 人工心臓用コンパクト磁気軸受システムの研究

    朝間淳一, 進士忠彦, 下河辺明, 星英男, 片岡弘之, 高谷節雄

    ２００３年度精密工学会秋季大会学術講演会講演論文集   Vol. ( No. )   433   2003

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  • A Micro-magnetic bearing using one-degree-of-freedom control Reviewed International journal

    Jiro KUROKI, Tadahiko SHINSHI, Lichuan LI, Akira SHIMOKOHBE

    Proc. 7th International Symposium on Magnetic Suspension Technology, 27-30 Oct. 2003, Fukuoka, Japan   Vol. ( No. )   50 - 55   2003

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  • Combined repetitive control for precision radial magnetic bearing Reviewed International journal

    X. Zhang, T.Shinshi, L. Li, A. Shimokohbe

    Proceedings of the 8th International Symposium on Magnetic Bearing   Vol. ( No. )   433 - 438   2002.8

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  • Precision radial bearing using estimation of the center of inertia and repetitive control Reviewed International journal

    TADAHIKO SHINSHI, X Zhang, L. Li, Akira Shimokohbe

    Proceedings of 2002euspen   Vol. ( No. )   163 - 166   2002

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  • A Simple and Miniaturized Magnetic Bearing for Cost -Sensitive Applications Reviewed International journal

    L. Li, T. Shinshi, J. Kuroki, A. Shimokohbe

    Proc. 8th International Symposium on Magnetic Bearings   Vol. ( No. )   561 - 565   2002

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  • ラジアル磁気軸受の高精度制御 Reviewed

    進士忠彦, 張 暁友, 飯島 知弘, 崔 起鳳, 李 黎川, 下河邉明

    精密工学会誌   Vol. 67 ( No. 11 )   1803 - 1807   2001.11

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  • 精密磁気軸受の研究（第２報）－２自由度制御型磁気軸受の回転精度－

    張 暁友, 進士忠彦, 李 黎川, 崔 起鳳, 下河邉明

    2001年度精密工学会春季大会学術講演会講演集   Vol. ( No. )   541   2001.3

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  • Stabilization of Permanent Magnet Repulsive Forces Type Levitation Table with One Degree-of-Freedom Control Reviewed International journal

    T. Shinshi, K. B. Choi, L. Li, Akira Shimokohbe

    Proceedings of 6th International Symposium on Magnetic Suspension Technology   Vol. ( No. )   212 - 217   2001

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  • 精密磁気軸受の研究（第１報）－２自由度制御型磁気軸受の試作と位置決め性能の評価－,

    進士忠彦, 張 暁友, 李 黎川, 崔 起鳳, 下河辺明

    2001年度精密工学会春季大会学術講演会講演集   Vol. ( No. )   540   2001

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  • 磁気軸受の現状と将来

    進士忠彦

    精密工学会誌   Vol. 67 ( No. 7 )   1086 - 1089   2001

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  • 電磁力による高精度非接触位置決めシステムの研究 Reviewed

    進士忠彦

    2000

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Books

  • 日本機械学会誌 第128巻 第1274号付録 メカトップ関東

    進士忠彦（大腸、直腸を活用した呼吸補助システム）

    日本機械学会  2025.1 

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    Responsible for pages：7   Language：Japanese   Book type：Scholarly book

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  • 機械工学年鑑2023（日本機械学会編）

    進士忠彦（13.機械力学・計測制御 13.6 磁気軸受）

    日本機械学会  2023.7 

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  • 体外循環遠心血液ポンプ用磁気浮上技術

    進士忠彦

    電気学会  2022.1 

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    Responsible for pages：44 - 46   Language：Japanese   Book type：Scholarly book

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  • Biomedical Engineering

    TADAHIKO SHINSHI

    Jenny Stanford  2021 

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  • 磁気浮上技術と原理と応用

    進士 忠彦（磁気浮上技術と原理と応用）

    科学情報出版株式会社  2018.3 

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  • 磁気浮上技術の原理と応用

    進士 忠彦（ Role： Contributor）

    科学情報出版株式会社  2018 

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  • 油空圧技術

    進士 忠彦（連続流血液ポンプ）

    日本工業出版  2015.3 

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    Responsible for pages：53 - 58   Language：Japanese   Book type：Scholarly book

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  • シミュレーション辞典

    進士忠彦（位置決め制御）

    日本シミュレーション学会編／コロナ社  2012.2 

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    Responsible for pages：6   Language：Japanese   Book type：Scholarly book

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  • シミュレーション事典

    進士 忠彦（ Role： Contributor）

    コロナ社  2012 

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  • 実用 精密位置決め技術事典

    進士忠彦（ Role： Contributor）

    産業技術サービスセンター  2008.12 

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    Responsible for pages：152 - 156   Language：Japanese   Book type：Scholarly book

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  • 電気学会技術報告

    進士忠彦

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    Responsible for pages：25 - 34   Language：Japanese   Book type：Scholarly book

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MISC

  • Measurement of Colonic Flow for the Development of an Enteral Ventilation System

    坂田北登, 松井綸花, 進士忠彦, 高山俊男, 藤井祐, 米山鷹介, 武部貴則

    精密工学会大会学術講演会講演論文集(CD-ROM)   2025   357 - 358   2025.3

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  • Beyond 5G/6G通信における導波路と伝送路間インピーダンス整合のための薄形リニア超音波モータの開発

    永井 慧大, 范 桄耀, 進士 忠彦, 李 尚曄, 出原俊介, 真下 智明

    2025年度精密工学会春季大会学術講演会講演論文集   2025   579 - 580   2025.3

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  • Development of a Soft Robot for Enteral Ventilation

    坂田北登, 松井綸花, 進士忠彦, 高山俊男, 藤井祐, 米山鷹介, 武部貴則

    MAGDAコンファレンス講演論文集(CD-ROM)   33rd   PS - 27   2024.11

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  • Super-resolution ultrasound sonography of microvessels in biliary and pancreatic diseases using ultrasound endoscopy

    AN Junseok, 杉田直広, 進士忠彦, 小林正典

    MAGDAコンファレンス講演論文集(CD-ROM)   33rd   PS - 18   2024.11

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  • A Portable Device for Cavitation-Driven Transdermal Drug Delivery

    山本真也, 杉田直広, 進士忠彦

    MAGDAコンファレンス講演論文集(CD-ROM)   33rd   PS - 14   2024.11

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    J-GLOBAL

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  • A Homopolar Bearingless Reluctance Slice Motor with Centralized Suspension Windings

    HE Zeqiang, SHINSHI Tadahiko

    MAGDAコンファレンス講演論文集(CD-ROM)   33rd   PS - 22   2024.11

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    J-GLOBAL

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  • An Ultra-Thin Variable Aperture Mechanism Using a Micro Flat Motor with a Multi-Pole Ring Magnet Reviewed International journal

    Keita Nagai, Riku Fukazawa, Yu Okawara, Haruhiko Komura, Tadahiko Shinshi

    Proceedings of ICPE2024   33rd   OS12 - 09(2P)   2024.10

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  • A compact cavity resonant ultrasound transducer for low-frequency sonophoresis

    山本真也, 杉田直広, 進士忠彦

    日本音響学会研究発表会講演論文集(CD-ROM)   2024   101 - 102   2024.9

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  • Impedance Matching Between a Waveguide and a Transmission Line Using a Flexible Conductive Membrane Micro-actuator for Beyond 5G/6G Communication

    Chao QI, Sangyeop Lee, Tadahiko SHINSH

    2024年精密工学会秋季大会学術講演会講演論文集   2024   266 - 267   2024.9

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  • Cavitation generation by multimode ultrasonic transducer

    山崎悠介, 山本真也, 杉田直広, 進士忠彦

    日本音響学会研究発表会講演論文集(CD-ROM)   2024   103 - 104   2024.9

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  • Development of a Pneumatic Soft Robot for Enteral Ventilation

    松井綸花, 進士忠彦, 高山俊男

    精密工学会大会学術講演会講演論文集(CD-ROM)   2024   559 - 560   2024.9

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  • Numerical study of Sound Scattering from Ultrasound Contrast Agents

    Naohiro Sugita, Taizou Maruyama, Junseok AN, TADAHIKO SHINSHI

    計算工学講演会論文集(CD-ROM)   29   2024.6

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  • Development of an Ultra-thin Variable Iris Mechanism Using a Micro Flat Motor with a Micro Multi-pole Ring Magnet

    永井慧大, 深澤陸, 大河原遊, 幸村治洋, 進士忠彦

    電磁力関連のダイナミクスシンポジウム講演論文集   OS2-4-4   101 - 102   2024.6

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  • Development of a colon propulsion soft robot for an enteral liquid ventilation system

    松井綸花, 渡部遼, 進士忠彦, 高山俊男, 藤井祐, 米山鷹介, 武部貴則

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM)   2024   A2 - G05   2024.5

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  • Goal 3: Good Health and Well-Being: Medical applications of magnetic levitation system

    土方亘, 増澤徹, 進士忠彦, 栗田伸幸, 長真啓

    電気学会全国大会講演論文集(CD-ROM)   2024   S14_2   2024.3

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  • Enhancing Transdermal drug permeation through ultrasonic cavitation

    杉田直広, 山本真也, 進士忠彦

    日本音響学会研究発表会講演論文集(CD-ROM)   2024   2024.3

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  • 超薄形アキシャルフラックスモータを用いた可変絞り機構の開発

    深澤 陸, 永井 慧大, 進士 忠彦, 大河原 遊, 幸村 治洋

    2024年度精密工学会春季大会学術講演会 大会講演論文集   2024   24 - 3   2024.2

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  • Application of MEMS devices using biocompatible thick film permanent magnets

    中野正基, 宮原悠, QI Chao, 進士忠彦

    生体医歯工学共同研究拠点成果報告書   2023   2024

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  • Magnetic films prepared on flexible substrates

    岡村和哉, 東倖主, 田原楽飛, 網屋拓輝, 山下昂洋, 柳井武志, 中野正基, 小池邦博, 進士忠彦

    電気学会研究会資料(Web)   ( MAG-24-139-157/MSS-24-062-080/BMS-24-027-045 )   2024

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  • Development of Thick-Film Neodymium Magnets on Si Substrates with Two Ceramics Underlayers for MEMS

    山口明華, 山下史宏, 山下昂洋, 柳井武志, 中野正基, 福永博俊, 永井慧大, 進士忠彦

    電気学会基礎・材料・共通部門大会(Web)   2024   2024

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  • Improvement in magnetic properties of thinned isotropic Nd-Fe-B sintered magnets

    本村桐哉, 東倖主, 山下昂洋, 柳井武志, 中野正基, 福永博俊, 永井慧大, 進士忠彦

    電気学会基礎・材料・共通部門大会(Web)   2024   2024

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  • LIFT法を用いた永久磁石膜の低温創製

    中野正基, 東倖主, 田原楽飛, 福田樹, 山下昂洋, 柳井武志, 福永博俊, 永井慧大, CHAO Qi, 進士忠彦

    粉体粉末冶金協会講演大会(Web)   2024   2024

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  • Development of Small Axial Flow Artificial Heart and Novel Hemolysis Assessment Platform

    栗田伸幸, 安達偉器, ワン ヤシン, 橋本誠司, 進士忠彦

    生体医歯工学共同研究拠点成果報告書   2023   2024

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  • Preparation of miniaturized magnets applied to medical MEMS

    宮原悠, 福田樹, 東倖主, 山下昂洋, 柳井武志, 福永博俊, 中野正基, QI Chao, 進士忠彦

    電気学会研究会資料(Web)   ( MAG-23-154-166 )   MAG-23-166   2023.12

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  • Improvement in magnetic properties of thinned Nd-Fe-B sintered magnets International journal

    Toya Motomura, Keita Nagai, Tadahiko Shinshi, Masaki Nakano

    Abstract Booklet of ISBE2023/IWNT2023   2024   146 - 147   2023.11

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  • Development of high torque, lightweight rotary actuators

    里那爽, 進士忠彦, 小出来一秀, 福島一彦, 今村直樹, 東山大輝

    MAGDAコンファレンス講演論文集(CD-ROM)   32nd   47 - 48   2023.11

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  • Microbubble detection and separation by using patterned ultrasound plane wave International journal

    Junseok An, Naohiro Sugita, Tadahiko Shinshi

    Proceedings of USE2023   44th   2023.11

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  • A low-frequency ultrasound transducer for creation of transdermal transport region International journal

    Shinya Yamamoto, Keita Tomioka, Naohiro Sugita, Tadahiko Shinshi

    Proceedings of USE2023   44th   2023.11

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  • A compact ultrasound transducer for transdermal drug delivery by low-frequency ultrasound

    山本真也, 冨岡圭太, 杉田直広, 進士忠彦

    日本音響学会研究発表会講演論文集(CD-ROM)   2023   111 - 112   2023.9

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  • Numerical analysis of transient response of a bubble cloud to ultrasound irradiation

    AN Junseok, 杉田直広, 進士忠彦

    日本音響学会研究発表会講演論文集(CD-ROM)   2023   123 - 124   2023.9

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  • Radial displacement measurement method for bearingless slice motor by installing eddy current displacement sensors under the rotor

    YANG Ren, HE Zeqiang, SUGITA Naohiro, SHINSHI Tadahiko

    電磁力関連のダイナミクスシンポジウム講演論文集   35th (CD-ROM)   172 - 173   2023.6

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  • Relationship between magnetic properties of NdFeB magnets and magnetization results in fine magnetic pattern batch transfer

    永井慧大, 杉田直広, 進士忠彦

    電磁力関連のダイナミクスシンポジウム講演論文集   35th (CD-ROM)   1128 - 131   2023.6

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  • Nonlinear Eigenvalue Analysis of a Bubble Cloud Oscillation

    杉田直広, 進士忠彦

    計算工学講演会論文集(CD-ROM)   28   E-04-03   2023.5

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  • Application of MEMS devices using biocompatible thick film permanent magnets

    宮原悠, 山下昂洋, 柳井武志, 福永博俊, 中野正基, QI Chao, 進士忠彦

    生体医歯工学共同研究拠点成果報告書   2022   2023.3

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  • Diagnosis and Vibration Suppression of Rotating Machine Using Electromagnetic Force

    進士忠彦

    精密工学会誌(Web)   89 ( 11 )   2023

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  • Magnetic properties and mechanical characteristic of Fe-Pt thin-sheets prepared by exfoliation behavior

    宮原悠, 山下昂洋, 柳井武志, 福永博俊, 中野正基, QI Chao, 進士忠彦

    日本磁気学会学術講演概要集   47th   2023

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  • Fe-Pt thin-sheet magnets prepared by exfoliation behavior

    宮原悠, 山下昂洋, 柳井武志, 福永博俊, 中野正基, 進士忠彦, 本田崇

    電気学会研究会資料(Web)   ( MAG-23-001-015 )   2023

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  • Survey of Permanent Magnet Materials in Multi-pole Micro Magnetization Method Using Laser-assisted Heating for Magnetic Microactuators

    永井慧大, 杉田直広, 進士忠彦

    MAGDAコンファレンス講演論文集(CD-ROM)   31st   623 - 624   2022.11

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  • Piezoelectric-based compact transducer for lowfrequency ultrasound enhanced transdermal drug delivery International journal

    Keita Tomioka, Shinya Yamamoto, Naohiro Sugita, Tadahiko Shinshi

    Abstract of The 43rd Symposium on UltraSonic Electronics   43rd   2Pb5 - 7   2022.11

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  • MEMS-based Magnetic Actuators Using Thick-film FePt Permanent Magnet for Micropumps

    Chao Qi, Keita Nagai, 紀 明, 宮原 悠, Naohiro Sugita, TADAHIKO SHINSHI, 中野 正基, Chiaki Sato

    MAGDAコンファレンス講演論文集(CD-ROM)   31st   577 - 578   2022.11

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  • セグメント高速ステアリングミラー駆動のための 圧電素子のヒステリシスの相似性を利用したコントローラゲイン調整法

    西田 莉那, 鍾 建朋, 進士 忠彦

    2022年度精密工学会秋季大会学術講演会講演論文集   2022   147 - 148   2022.9

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  • ネオジム磁石に対する改良型レーザアシスト加熱微細多極着磁法の研究

    永井 慧大, 濱岡 陽平, 杉田 直広, 進士 忠彦

    2022年度精密工学会春季大会学術講演会講演論文集   2022 ( C106 )   235 - 236   2022.3

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  • An ultra-fast steering mirror using stacked piezoelectric actuators

    ZHONG Jianpeng, 西田莉那, 進士忠彦

    精密工学会大会学術講演会講演論文集(CD-ROM)   2022 ( E30 )   369 - 370   2022.3

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  • Implantable energy harvesting system utilizing muscle contraction

    土方亘, 持田匠, 三林浩二, 進士忠彦

    生体医歯工学共同研究拠点成果報告書   2021   2022

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    中野正基, 宮原悠, 鶴岡晃典, 進士忠彦

    生体医歯工学共同研究拠点成果報告会   2021 (CD-ROM)   2022

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  • Preparation of Nd-Fe-B thick film magnets applied to MEMS

    樋口晃太, 高嶋恵佑, 山下昂洋, 柳井武志, 中野正基, 福永博俊, 進士忠彦

    センサ・マイクロマシンと応用システムシンポジウム(CD-ROM)   38th   10P3-SSP-22   2021.11

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  • Generation and Control of Ultrasonic Cavitation on Soft Material by Dual-frequency Acoustic Resonances International journal

    Naohiro Sugita, Taichi Oshino, Tadahiko Shinshi

    超音波エレクトロニクスの基礎と応用に関するシンポジウム(CD-ROM)   42nd   2021.10

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  • Effect of Number Concentration of Contrast Agent Microbubbles in a Microchamber on Shell Disruption International journal

    Junsyou kanashima, Naohiro Sugita, Tadahiko Shinshi

    超音波エレクトロニクスの基礎と応用に関するシンポジウム(CD-ROM)   42nd   2021.10

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  • An actuator to grip space debris by deforming a bistable shell with a shape memory alloy

    西村恵寿, 進士忠彦, 小出来一秀, 福島一彦

    精密工学会大会学術講演会講演論文集(CD-ROM)   2021   455 - 456   2021.3

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  • シリコーンオイルを用いた液冷により温度制御した積層型圧電素子の高周波駆動時の変位特性

    西田莉那, 鍾建朋, 進士忠彦

    2021年度精密工学会春季大会学術講演会講演論文集   2021   440 - 441   2021.3

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  • Numerical Analysis of Superharmonic Resonance in Electromagnetic Vibration Energy Harvester with Ball Impacts

    杉田直広, 木根諒, HAN Dong, 進士忠彦

    Dynamics & Design Conference (CD-ROM)   2020 ( No. 20-11 )   135   2020.9

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  • 積層型圧電素子の液冷の研究

    西田莉那, 鍾建朋, 進士忠彦

    2020年度精密工学会秋季大会学術講演会講演論文集   2020 ( C0208 )   288 - 289   2020.9

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  • Effect of number concentration on microcapsule disruption under ultrasound irradiation

    杉田直広, 進士忠彦

    応用物理学会春季学術講演会講演予稿集(CD-ROM)   15p-D305-8   01 - 145   2020.3

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  • Implantable energy harvesting system utilizing muscle contraction

    土方亘, 持田匠, 三林浩二, 進士忠彦

    生体医歯工学共同研究拠点成果報告会   2021 (CD-ROM)   149   2020.3

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  • Application of MEMS devices using biocompatible thick film permanent magnets

    宮原悠, 山下昂洋, 柳井武志, 福永博俊, 中野正基, QI Chao, 進士忠彦

    生体医歯工学共同研究拠点成果報告会   2022 (CD-ROM)   157   2020.3

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  • Application of MEMS devices using biocompatible thick film permanent magnets

    中野正基, 宮原悠, 鶴岡晃典, 進士忠彦

    生体医歯工学共同研究拠点成果報告書   2021   93   2019.3

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  • A Centrifugal Blood Pump Utilizing a Switched Reluctance Type Bearingless Disk Motor Reviewed

    進士忠彦, 山本凌, HAN Dong

    Dynamics & Design Conference (CD-ROM)   2019   525   2019

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  • Suppression of Self-Excited Vibration by Compensating the Unstable Force of Oil Film Bearing Utilizing Electro-Magnetic Actuator Reviewed

    津野田亘, 進士忠彦, 藤原浩幸, 松下修己

    精密工学会誌(Web)   Vol. 84 ( No. 6 )   584 - 588   2018.6

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  • 超弾性体ロッドを案内に用いた高速ステアリングミラーの軸方向駆動

    明野晃季, 清水大輔, 進士忠彦, 小出来一秀, 福島一彦

    電磁力関連のダイナミクスシンポジウム講演論文集   30th   496 - 499   2018.5

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  • A Super-responsive Tip-Tilt Motion Control of a Mirror Driven by Electromagnetic Force and Supported by an Elastic Rod Made of Super Elastic Alloy Reviewed

    明野晃季, 清水大輔, 進士忠彦, 小出来一秀, 福島一彦

    精密工学会誌(Web)   Vol. 84 ( No. 5 )   443 - 448   2018.5

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  • 使い捨て部に永久磁石を用いない体外設置型遠心血液ポンプ用ベアリングレスモータの開発

    山本凌, 柳樂佳樹, 進士忠彦

    電磁力関連のダイナミクスシンポジウム講演論文集   30th   140 - 143   2018.5

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  • レーザアシスト加熱による多極着磁磁石を用いた2自由度電磁マイクロアクチュエータ

    吾妻範栄, 進士忠彦, 鈴木健一

    精密工学会大会学術講演会講演論文集   2018   679 - 680   2018.3

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  • A Two-Degree-of-Freedom Micro Electromagnetic Actuator Utilizing a Fine Pitch and Multi-Pole Magnetized Permanent Magnet Reviewed

    吾妻範栄, 田中俊也, 藤原良元, 進士忠彦, 鈴木健一

    精密工学会誌(Web)   Vol. 84 ( No. 3 )   289 - 294   2018.3

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  • 多自由度・高応答ステアリングミラー機構の研究

    清水大輔, 明野晃季, 進士忠彦, 小出来一秀, 福島一彦

    精密工学会大会学術講演会講演論文集   2018   681 - 682   2018.3

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  • 使い捨て遠心血液ポンプ用スイッチトリラクタンス型ベアリングレススライスモータの研究

    柳樂佳樹, 山本凌, 進士忠彦

    精密工学会大会学術講演会講演論文集   2018   677 - 678   2018.3

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  • 超弾性合金製ロッドで支持された2軸高応答ミラー駆動機構の開発

    明野晃季, 清水大輔, 進士忠彦, 小出来一秀, 福島一彦

    精密工学会大会学術講演会講演論文集   2017   415 - 416   2017.9

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  • ベアリングレスモータによるすべり軸受で支持された弾性ロータの高速回転

    津野田亘, 千葉明, 進士忠彦

    精密工学会大会学術講演会講演論文集   2017   417 - 418   2017.9

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  • F-1-1 Sensorless Blood Viscosity Measurement in a Magnetically-Levitated Centrifugal Blood Pump

    SUZUMORI Yuki, HIJIKATA Wataru, SHINSHI Tadahiko

    Conference on Information, Intelligence and Precision Equipment : IIP   2016   "F - 1-1-1"-"F-1-1-2"   2016.3

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    A sensorless noninvasive method for measuring blood viscosity has been developed for a magnetically-levitated centrifugal blood pump. The blood viscosity can be calculated from the measured phase difference between the input current to the magnetic bearing and the impeller displacement. The experimental results using porcine blood, which has a non-Newtonian property, showed the difference between the viscosity measured by a cylinder viscometer and one by the magnetic bearing was 0.3 mPa・s. In the range of 0.5 to 4.5 L/min, the variation of the measured viscosity was less than 0.2 mPa・s. The results indicate the proposed method can be applied to measure the blood viscosity for clinical use.

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  • 29pm3-PN-1 Micromachining of Sintered Nd-Fe-B Magnet for MEMS Application

    FUJIWARA Ryogen, HIJIKATA Wataru, SHINSHI Tadahiko

    2015 ( 7 )   "29pm3 - PN-1-1"-"29pm3-PN-1-2"   2015.10

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    To realize a lens drive actuator in mobile camera utilizing MEMS technology, micro-pitch and multi-pole magnetization of a sintered Nd-Fe-B magnet of 500 μm in thickness was discussed in this paper. First, the Nd-Fe-B magnet was bonded on a glass substrate using polyimide adhesive to buffer the thermal stress due to the difference of their linear expansion coefficients. Secondly, some slits were processed by a dicing at an interval of 650 μm. Then, each uniformly-magnetized and divided magnet part was alternately heated by a laser beam and each heated part was reversely magnetized by the leakage flux generated from both non-heated adjacent magnets. The micro-pitch and multi-pole Nd-Fe-B magnet generated the magnetic field of 0.48 T (p-p) at a distance of 100 μm from the surface, which is about 90% of that of simulated one.

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  • 623 Approximate stability analysis of rotor supported by oil film bearing and its validation using HIL simulator

    TSUNODA Wataru, HIJIKATA Wataru, SHINSHI Tadahiko, FUJIWARA Hiroyuki, MATSUSHITA Osami

    Dynamics and Design Conference : D & D   2015 ( No. 15-7 )   "623 - 1"-"623-11"   2015.8

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    In the rotor systems having oil film bearings and/or fluid seals, there is a possibility of fluid-induced vibration such as oil whip and oil whirl at high rotational speed. The stability analysis methods of the rotor systems are necessary, not only in the design phase but also under operation. In this study, we propose an approximate stability analysis method by utilizing the fluid force model developed by Bently and Muszynska and experimentally excited rotor responses at a low rotational speed. The proposed method enables the prediction of the onset of self-excitation. In order to evaluate the proposed method, the Hardware-In-the-Loop (HIL) simulator, which can simulates rotor vibration in real time, was constructed. From the simulation results, it became clear that the self-excitation was precisely estimated by the proposed stability analysis.

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  • A MAGLEV LENS DRIVING ACTUATOR FOR HIGH-FREQUENCY AND MULTI-DOF LASER FOCUS POSITIONING IN LASER BEAM CUTTING Reviewed International journal

    Tadahiko Shinshi, Yoshihiro Morimoto, Dongjue He, Wataru Hijikata, Takahiro Nakai, Naoyuki Nakamura

    Proceedings of 2015 JSME-IIP/ASME-ISPS Joint Conference on Micromechatronics for Information and Precision Equipment (MIPE 2015)   2015   Mop - 40   2015.6

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    In order to realize high-frequency and multi- dimensional laser beam focus positioning during laser beam cutting, a maglev 3-DOF lens driving actuator is developed. The objective of this paper is the design and fabrication of a compact maglev lens driving actuator which can drive the lens in both the axial and radial directions, and can be accommodated in the laser head of a conventional laser cutting machine.

    DOI： 10.1299/jsmemipe.2015._MoP-40-1_

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  • 1A1-D06 Wireless Power Transmission System Utilizing Magnetic Resonant Coupling for an Artificial Heart

    KATSUMATA Daisuke, TAKAHASHI Fumiya, HIJIKATA Wataru, SHINSHI Tadahiko

    2015 ( No. 15 )   1A1 - D06   2015.5

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    In order to avoid infections caused by a percutaneous power supply cable for an implantable artificial heart, we propose a wireless power transmission system utilizing a magnetic resonant coupling technology, which can transmit electric power with wider gap than that in an electromagnetic induction technology. In order to compensate for decreasing the transmission efficiency due to the relative movement between a transmission coil and a receiver coil, coupling coefficient between the coils is enhanced by controlling attitude of the transmission coil according to the position and attitude of the receiver coil. In this study, effect of enhancing the transmission efficiency owing to both controlling the attitude of the transmission coil and matching the impedance was evaluated. Moreover, a motion capture Kinect is used for measuring the position and attitude of a patient implanting the receiver coil. The measurement accuracy of the Kinect was evaluated.

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  • 1P1-F07 Basic study on in vivo power generation system using contraction of skeletal muscle generated by electrical stimulation

    SAHARA Genta, TOMIOKA Kota, HIJIKATA Wataru, SHINSHI Tadahiko

    2015 ( No. 15 )   1A1 - F07   2015.5

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    As a method for power supply, we proposed an active in vivo power generation system using an electrical muscle stimulation technology as an alternative to an implantation of batteries and a wireless power transmission. In this system, contractile force generated by applying electrical stimulation to skeletal muscle was used as an energy source. In this paper, based on the results of muscle contraction characteristics by electrical stimulation, an electromagnetic induction type power generation mechanism was designed and fabricated. The power generation performance of the proposed generator was evaluated using the gastrocnemius muscle of a toad and the net power generated in the experiment was 112μW.

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  • J2410102 Basic study on in vivo power generation using electrical muscle stimulation technology

    SAHARA Genta, HIJIKATA Wataru, SHINSHI Tadahiko

    The Proceedings of Mechanical Engineering Congress, Japan   2014 ( 0 )   J2410102 - -_J2410102-   2014.9

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    In order to supply electricity to medical implantable devices, we propose an in vivo power generation system using an electrical muscle stimulation technology as an alternative to a percutaneous power supply and an implantation of batteries. To choose an effective power generation method using contraction of a part of the muscle, we investigated properties of the muscular contraction resulting from the electrical stimulation. Using the gastrocnemius muscle of a toad, we measured the muscular tension in the isometric contraction and the amount of shrinkage in the isotonic contraction. As a result of each measurement, the maximal tension of 1.1 N and the maximal distance of 3.2 mm were measured, respectively. It was concluded that the application of the piezoelectric generation was unsuitable because the isometric contraction had a long period. Therefor it suggested that the electromagnetic induction type that utilizing shortening of the muscle was desirable for a generator of the proposed system. Future works include optimization of the electrical stimulation signal considering muscle fatigue, investigation of the muscle contraction properties under the various load, and design of the power generation mechanism.

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  • F-2-1 Sensorless flow rate measurement for a maglev centrifugal blood pump

    HIJIKATA Wataru, ABE Shodai, SHINSHI Tadahiko, TAKATANI Setsuo

    Conference on Information, Intelligence and Precision Equipment : IIP   2014 ( No. 14-10 )   "F - 2-1-1"-"F-2-1-2"   2014.3

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    A sensorless flow rate measurement has been proposed to control a flow rate in a magnetically levitated centrifugal blood pump without any flow sensor. The proposed algorithm consists of a linear function of the flow rate and the ratio of rotational torque to rotational speed of the impeller. In the range between 0 and 10 L/min with a working fluid of water, the error of the estimated flow rate using directly measured torque was less than 0.51 L/min, which was about a half of the equivalent value using the torque estimated from motor power consumption. Using several working fluids whose viscosity ranged from 0.75 to 3.29 mPa・s, the viscosity was estimated with the error of less than 0.16 mPa・s, from the directly measured torque when the outlet was clamped. Estimated flow rate, compensated by the estimated viscosity, showed the error of less than 0.77 L/min in the range of up to 10 L/min.

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  • Magnetic MEMS Devices Using Thin Film Permanent Magnet

    9 ( 5 )   204 - 210   2014

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  • 6AM2-A-6 Laser Beam Assisted Micro Magnetization of Thin Film Neodymium Magnet

    FUJIWARA Ryogen, SHINSHI Tadahiko, UEHARA Minoru

    2013 ( 5 )   103 - 104   2013.11

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    Recently, a multilayered thin film Nd_2Fe_<14>B/Ta permanent magnet (TFPM), which not only has a high remnant flux density and a high coercive force similar to those of conventional sintered bulk neodymium magnets, but also has high heat tolerance, was developed. In this study, micro magnetization assisted by laser heating under an external DC magnetic field was proposed and tested. The laser beam conditions were determined using unsteady heat conduction analysis. Using a magnetic field analysis simulator, neodymium PM arrays are designed to apply the DC magnetic field to the TFPM. Magnetized strips of 200 μrn in width were patterned in the TFPM of 4.5 μm in thickness. Agreement between measured and simulated magnetic flux densities over the TFPM was obtained.

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  • A07 Precision Control of Magnetic Drive Actuator for Laser Cutting

    CHU Deqiang, ZHANG Xiaoyou, SHINSHI Tadahiko, FUKUOKA Teruaki, NAKAI Takahiro

    The ... Manufacturing & Machine Tool Conference   2012 ( 9 )   25 - 26   2012.10

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    This paper describes an adaptive control method for a magnetic drive actuator that used for the laser cutting to realize high speed and high accuracy machining. Firstly, a zero bias current method and a nonlinear compensator are examined and used for the actuator. Secondly, an adaptive control method is presented. Finally, the coefficient of the gap-current-force is estimated and the effectiveness of the presented control method is verified by experiments. The experimental results show that the coefficient of the gap-current-force reduces exponentially depending on the increase in the length of the air gap- By using the adaptive control, the peak-to-peak vibration amplitude of the lens holder is reduced from l .95μm t0 1.55μm. Moreover, the magnetic drive actuator has a positioning resolution of 0.75μm, a bandwidth of 141Hz and a positioning stroke of ±0.5mm.

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  • Small Hole EDM Utilizing High-speed and Multi-DOF Maglev Actuators

    進士 忠彦, 上山 吉崇, 何 冬覚

    電気加工技術   36 ( 114 )   6 - 11   2012.7

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  • Small Hole EDM Utilizing High-speed and Multi-DOF Maglev Actuators

    SHINSHI Tadahiko, UEYAMA Yoshitaka, HE Dongjue, YUZAWA Takashi

    電気加工技術   Vol. 36 ( No. 114 )   6‐11 - 11   2012.7

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  • A compact centrifugal blood pump utilizing an axially-controlled magnetic bearing motor

    Atsushi Yumoto, Tadahiko Shinshi

    Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C   78 ( 792 )   3064 - 3072   2012

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    DOI： 10.1299/kikaic.78.3064

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  • Characteristics of Nd-Fe-B/Ta Multilayered Permanent Magnet Thin-films and Their Application to Magnetic Devices

    上原 稔, 進士 忠彦

    日立金属技報   28   14 - 19   2012

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  • Magnetic/aerostatic hybrid lens drive actuator for off-axis laser beam cutting machine

    Yoshihiro Morimoto, Tadahiko Shinshi, Takahiro Nakai, Teruaki Fukuoka

    Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C   78 ( 794 )   3569 - 3582   2012

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    DOI： 10.1299/kikaic.78.3569

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  • Hole Electrical Discharge Machining Using a High-Response and Multi-DOF Controlled Maglev Actuator (Effects of Direction, Amplitude and Frequency of Electrode Motion on Hole Machining Speed) Reviewed

    UEYAMA Yoshitaka, SHINSHI Tadahiko, ZHANG Xiaoyou, YUZAWA Takashi, SATO Tatsushi

    TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C   77 ( 773 )   196 - 203   2011.1

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    DOI： 10.1299/kikaic.77.196

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  • A One-Degree-of-Freedom Controlled Magnetic Bearing Motor for Compact Centrifugal Blood Pumps

    YUMOTO Atsushi, UEDA Manabu, SHINSHI Tadahiko

    TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C   77 ( 779 )   2822 - 2831   2011

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    We applied an axial flux motor to the one-degree-of-freedom controlled magnetic bearing (MB) which we had proposed and designed for centrifugal blood pumps. The axial flux motor, which has little effect on the stiffness of the magnetic bearing, consists of Halbach permanent magnet arrays in the rotor and coreless motor coils in the stators. An experimental rotor, which was 52mm in diameter 18.5mm in height and 0.14kg in weight, could levitate stably. The rotor could rotate at a rotational speed of up to 3,000rpm when the bearing and motor gaps were filled with the glycerin fluid whose density and viscosity were as same as human blood at room temperature.

    DOI： 10.1299/kikaic.77.2822

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  • Small-hole Electrical Discharge Machining Using a Maglev Actuator

    Yoshitaka Ueyama, Xiaoyou Zhang, TADAHIKO SHINSHI, Akira Shimokohbe, 中川孝幸, 佐藤達志, 三宅英孝

    Journal of the Japan Society for Precision Engineering   Vol. 76 ( No. 6 )   638 - 642   2010.6

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    DOI： 10.2493/jjspe.76.638

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  • A Disposable Magnetically Levitated Centrifugal Blood Pump for Extracorporeal Circulation Support:&mdash;Improvement of Pump Performance for Animal Experiment&mdash;

    HIJIKATA Wataru, SHINSHI Tadahiko, SOMEYA Takeshi, ARAI Hirokuni, TAKATANI Setsuo, SHIMOKOHBE Akira

    Journal of the Japan Society for Precision Engineering   76 ( 9 )   1064 - 1069   2010

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    A disposable magnetically levitated centrifugal blood pump, which aims to be used for from a few days to a few months, has been developed. An impeller is levitated and rotated without contact using a two-degree-of-freedom radial magnetic bearing and a magnetic coupling. Due to &amp;lsquo;out-of-step&amp;rsquo; of the magnetic coupling caused by its insufficient transmittable torque, a previous prototype pump could not yield the required pressure-flow characteristics of 5 L/min against 106 kPa (800 mmHg). The magnetic coupling was redesigned in order to increase the transmittable torque. The stability of the impeller levitation against impact was evaluated through a base excitation test simulating animal experiment and practical use. Applying an impulse excitation of an acceleration of 200 m/s&lt;sup&gt;2&lt;/sup&gt;, the impeller could keep contactless levitation both in the controlled direction and in the passively supported directions. Finally, the animal experiments for one to two weeks showed that no damage and no thrombus formation were found in the pump heads.

    DOI： 10.2493/jjspe.76.1064

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  • Cooperative Control System of a Maglev Local Actuator and a Conventional EDM Machine Reviewed International journal

    Yoshitaka UEYAMA, Xiaoyou ZHANG, Tadahiko SHINSHI, Akira SHIMOKOHBE, Takayuki NAKAGAWA, Tatsushi SATO, Hidetaka MIYAKE

    Proceedings of the 5th International Conference on Leading Edge Manufacturing in 21st Century   2009 ( No. 09-207 )   203 - 206   2009.12

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  • Radial Hydraulic Force Estimation In A Magnetically Levitated Centrifugal Blood Pump Reviewed International journal

    Chi Nan Pai, Tadahiko Shinshi, Xiaoyou Zhang, Akira Shimokohbe

    Proceedings of the 2009 JSME-IIP/ASME-ISPS Joint Conference on Micromechatronics for Information and Precision Equipment   2009 ( 0 )   215 - 216   2009.6

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    In order to solve the problem of lack of heart donors, ventricular assist devices have been developed and used as a bridge to transplant, a bridge to recovery or as destination therapy. Among these devices, maglev rotary pumps have been shown to deliver good clinical results with low blood damage, low risk for blood clot formation and high durability. In order to improve the magnetic bearing design, hydraulic forces acting on the maglev impeller should be precisely evaluated, however direct measurement is impossible due to absence of a rotor shaft. In this study, we propose using disturbance force observer in a two degrees-of-freedom radial controlled maglev centrifugal blood pump to estimate the radial hydraulic force acting on the maglev impeller. The radial dynamic characteristics of the maglev impeller change with flow conditions, so they were evaluated under different rotational speeds and flow resistances, and the radial disturbance force observers were designed based on the linear models obtained for a given rotational speed. Applying these observers at different rotational speeds and flow resistances, under continuous flow, we observed little variation of force direction with respect to rotational speed and proportionality between the force magnitude and the flow rate, being the maximum force 1.3 N for a flow rate of 6.8 L/min at 1700 min^&lt;-1&gt;. Under pulsatile flow, as in ventricular assistance, the estimated hydraulic forces followed the pulsatile flow oscillation at 60, 70 and 80 bpm, and the backflow could also be observed.

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  • P-PRE-01 SMALL HOLE MACHINING USING A COMBINATION OF A 5-DOF CONTROLLED MAGLEV ACTUATOR AND A CONVENTIONAL ELECTRICAL DISCHARGE MACHINE(MM/Micro/Nano Precision Equipments,Technical Program of Poster Session)

    UEYAMA Yoshitaka, SHINSHI Tadahiko, ZHANG Xiaoyou, SHIMOKOHBE Akira, SATO Tatsushi, MIYAKE Hidetaka, NAKAGAWA Takayuki

    MIPE   2009 ( 0 )   407 - 408   2009

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    This paper describes electrical discharge machining (EDM) at a high speed, with a high precision five degrees of freedom (5-DOF) controlled maglev actuator. To machine deep, small holes with a depth more than the stroke of the maglev actuator, a conventional EDM machine having long stroke and the maglev actuator were combined and cooperatively controlled. To avoid abnormal electrical discharge, we proposed two types of driving method for an electrode; jump and circular motions using the maglev actuator. Experimental results show that high speed and high precision adjustment of the distance between a work-piece and the electrode (EDM gap) by the maglev actuator is effective for high speed EDM. Moreover, the jump and circular motions increase the machining speed due to improvement in the ejection of debris and bubbles and decrease in the probability of abnormal electrical discharge.

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  • Miniaturization Technologies for Magnetically Levitated Ventricular Assist Devices

    SHINSHI Tadahiko

    Journal of the Society of Mechanical Engineers   112 ( 1088 )   572 - 575   2009

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    DOI： 10.1299/jsmemag.112.1088_572

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  • 体外循環用使い捨て磁気浮上血液ポンプの実用化研究

    土方亘, NAN Pai Chi, 進士忠彦, 下河辺明, 染谷毅, 荒井裕国, 高谷節雄

    精密工学会大会学術講演会講演論文集   2009   43 - 44   2009

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  • 20315 Development of a Disposable Extracorporeal Centrifugal Blood Pump with Magnetic Bearing System Reviewed

    Hijikata Wataru, Nan Pai Chi, Shinshi Tadahiko, Shimokohbe Akira, Someya Takeshi, Arai Hirokuni, Takatani Setsuo

    The Proceedings of Conference of Kanto Branch   2009 ( 0 )   213 - 214   2009

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    A disposable extracorporeal centrifugal blood pump utilizing a simply-structured radial controlled magnetic bearing and a torque transmission mechanism has been developed to enhance the durability of the disposable pump head and to reduce blood trauma such as hemolysis and thrombus formation. The prototype blood pump satisfied a requirement of a flow rate of 5 L/min against a head pressure of 800 mmHg. Under sinusoidal base excitation of the maximum acceleration of 9.8 m/s^2 from 10 to 200 Hz and impulse base excitation of 78.4 m/s^2 in the axial and radial directions, the impeller could levitate stably within amplitude of 35 μm in the radial direction, which was smaller than the fluid gaps of 0.3 mm. The normalized index of hemolysis of the prototype was 5.4 ± 0.8 mg/100L, which was about a half of the equivalent value of a commercialized pump having mechanical bearings (BioPump BPX-80). After in-vivo studies with calves for one to two weeks, no thrombus formation was found inside the pump heads.

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  • 第47回全国学生研修会報告(関東学生会)(学生会だより)

    進士 忠彦

    日本機械学会誌   112 ( 1093 )   985 - 985   2009

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    Language：Japanese   Publisher：一般社団法人 日本機械学会  

    DOI： 10.1299/jsmemag.112.1093_985

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  • Development of MedTech Dispo,a Japanese first disposable,magnetically levitated centrifugal blood pump intended for bridge-to-bridge applications

    長岡 英気, Wataru Hijikata, TADAHIKO SHINSHI, 荒井 裕国, 高谷 節雄

    Annual Reports of the Institute of Biomaterials and Bioengineering   Vol. 43   41 - 44   2009

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  • B29 A Compact Maglev Actuator Employing a Novel Power Supply Mechanism for High Speed EDM

    ZHANG Xiaoyou, SHINSHI Tadahiko, SHIMOKOHBE Akira, MIYAKE Hidetaka, NAKAGAWA Takayuki, IMAI Yoshihito

    The Proceedings of The Manufacturing & Machine Tool Conference   2008 ( No. 8-19 )   241 - 242   2008.11

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    This paper reports on a compact, 5-degrees-of-freedom (5-DOF) controlled maglev local actuator for realizing high speed electrical discharge machining (EDM), employing a novel power supply mechanism to feed a discharge current to an electrode attached to a spindle, and to transmit a torque from a motor to the spindle. The spindle is supported by a 5-DOF controlled magnetic bearing and is rotated by following the rotation of a power supply ring, utilizing a magnetic coupling. Flexible wires between the power supply ring and the spindle feed the discharge current to the electrode, without transmitting disturbing forces, so that the spindle is free from the direct contact with brushes, used to feed the discharge current. Experimental results show a prototype maglev actuator possesses a positioning resolution of a few microns and several ten micro-radians, bandwidths greater than 100 Hz in the 5-DOF directions, and a positioning stroke of 2mm in the thrust direction. Moreover, the discharge current can be fed to the electrode attached to the spindle, rotating at 2,000min^&lt;-1&gt;.

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  • 1カ月補助,bridge‐to‐bridgeを目的とした日本発,ディスポ式,磁気浮上遠心血液ポンプMedTech Dispoの研究開発

    染谷毅, 土方亘, 和栗聡, 牛山朋彦, 小林真理子, 北尾貴史, 渡辺哲郎, パイチナン, 石井泰祐, 石井泰祐, 町田真也, 大澤英之, 迫田大輔, 坂本竜樹, 横山直幸, 横山敬正, 進士忠彦, 荒井裕国, 高谷節雄

    人工臓器(日本人工臓器学会)   Vol. 37 ( No. 2 )   S - 13   2008.11

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  • E14 Jump flushing during EDM using maglev actuator

    UEYAMA Yoshitaka, ZHANG Xiaoyou, SHINSHI Tadahiko, SHIMOKOHBE Akira, SATO Tatsushi, MIYAKE Hidetaka, NAKAGAWA Takayuki

    The Proceedings of The Manufacturing & Machine Tool Conference   2008 ( No. 8-19 )   155 - 156   2008.11

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    The objective of this study is to realize high-speed and high-accuracy electrical discharge machining (EDM) using a wide-bandwidth, high-precision, millimeter-stroke, 5-DOF controlled maglev local actuator. In this paper, we discuss the effects of the axial jump and radial vibration of the electrode on the machining speed of small diameter holes. The experimental results showed that by applying the jump operation or vibration of the electrode, the machining speeds for φ1mm holes were improved by 85.3% and 68.4%, and the electrode wear rates were reduced from 25.0% to 17.5% and from 16.4% to 3.3%, respectively.

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  • A 5-DOF Controlled Maglev Local Actuator and its Application to Electrical Discharge Machining Reviewed International journal

    Xiaoyou ZHANG, Tadahiko SHINSHI, Go KAJIWARA, Akira SHIMOKOHBE

    Precision Engineering   Vol. 32 ( No. 4 )   289 - 300   2008.7

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  • A One-degree-of-freedom Controlled Magnetic Bearing for Compact Centrifugal Pumps Reviewed

    YUMOTO Atsushi, SHINSHI Tadahiko, ZHANG Xiaoyou, SHIMOKOHBE Akira

    Transactions of the Japan Society of Mechanical Engineers C   Vol. 74 ( No. 742 )   1625 - 1630   2008.6

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    DOI： 10.1299/kikaic.74.1625

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  • Disposable, Magnetically Levitated Centrifugal Blood Pump

    Hideo Sobajima, Wataru Hijikata, Daisuke Sakota, Hideyuki Ohsawa, Tadahiko Shinshi, Tetsuo Fujimoto, Setsuo Takatani

    Annual Reports of the Institute of Biomaterials and Bioengineering   Vol. 41 ( No. )   45 - 48   2007.12

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  • Compact Centrifugal Blood Pump Using Magnetic Bearing

    後藤駿治, 進士忠彦, PAI Chi Nan, 土方亘, 下河辺明, 高谷節雄

    自動制御連合講演会(CD-ROM)   Vol. ( No. )   548 - 553   2007.11

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  • 小児から成人に適用可能な超小型、植え込み式磁気浮上遠心型人工心臓の現況

    高谷節雄, 進士忠彦

    第４４回日本人工臓器学会予稿集   35 ( 2 )   SY5 - 9   2006.11

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    DOI： 10.11392/jsao1972.35.2_S31

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  • A 5-DOF Controlled Maglev Actuator for Precision and Micro Electrical Discharge Machining

    Xiaoyou Zhang, TADAHIKO SHINSHI, 遠藤弘樹, Akira Shimokohbe, Yoshihito IMAI, Hidetaka MIYAKE, Takayuki NAKAGAWA

    The Proceedings of The Manufacturing & Machine Tool Conference   Vol. ( No. 06-34 )   77 - 78   2006.11

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    This paper describes a 5-DOF controlled maglev actuator for electrical discharge machining. This actuator is compact enough to be attached to conventional electrical discharge machines. The actuator can not only improve machining speed and machining accuracy, but can also be used to realize micro-machining. The experimental results show that the maglev actuator has better than 1μm positioning resolution, a bandwidth greater than 120Hz in the 5-DOF directions, and a positioning stroke of 2mm in the thrust direction. Moreover, the maglev actuator was attached to an electrical discharge machine. Stable magnetic levitation of the spindle shaft during electrical discharge was verified. An electrical discharge machining experiment was executed and a hole of φ1.7mm was machined with the maglev actuator.

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  • 磁気浮上血液ポンプのチタンフレーム化がロータ変位計測に及ぼす影響

    朝間淳一, 土方亘, 進士忠彦, 下河辺明, 星英男, 高谷節雄

    精密工学会大会学術講演会講演論文集   Vol. L19 ( No. )   869 - 870   2006.9

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  • Micro-Magnetic Bearing Motor

    KUROKI Jiro, SHINSHI Tadahiko, LI Lichuan, SHIMOKOHBE Akira

    Journal of the Japan Society for Precision Engineering. Supplement. Contributed papers   Vol. 72 ( No. 5 )   662 - 667   2006.6

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    This paper describes a micro-magnetic bearing (MMB) motor, in which, for the miniaturization, the rotor is supported by a one-axis-controlled magnetic bearing and the axial displacement is measured using capacitance variation between electromagnet cores and the rotor to stabilize the system. To drive the MMB rotor, an induction motor is chosen from the viewpoint of easy-to-integration. The induction motor is designed so that influences of magnetic and electrical interferences on the magnetic stiffness and the accuracy of the measured axial displacement can be reduced. The experimental results for an MMB motor with 6-mm-diameter rotor show that the rotor could levitate and rotate at 10,000rpm stably. Magnetic stiffness of the MMB in the radial and angular directions were 1.32N/mm and 0.64Nm/rad, respectively and vibration amplitude of the rotor in the radial and angular directions were 2.3μm and 3.5×10^&lt;-4&gt; rad at 5,000rpm, respectively.

    DOI： 10.2493/jspe.72.662

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  • 磁気浮上ディスポーザブル血液ポンプ

    土方亘, 原力, 朝間淳一, 進士忠彦, 下河辺明, 星英男, 高谷節雄

    精密工学会大会学術講演会講演論文集   Vol. ( No. )   867 - 868   2006.3

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  • Control of Hemolysis and Thrombosis in MagLev Centrifugal Rotary Blood Pumps

    Takatani Setsuo, Asama Junichi, Hijikata Wataru, Shimokohbe Akira, Ohuchi Katsuhiro, Hoshi Hideo, Watanabe Nobuo, Kido Kazuyuki, Sakota Daisuke, Sobajima Hideo, Nakayama Ayumi, Shinshi Tadahiko

    Journal of Life Support Engineering   18 ( 0 )   40 - 40   2006

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    Publisher：ライフサポート学会  

    DOI： 10.5136/lifesupport.18.Supplement_40

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  • Development of Magnetic Levitated Centrifugal Blood Pump System

    HOSHI H, TAKATANI S, ASAMA J, HARA C, HIJIKATA W, SHINSHI T, SHIMOKOHBE A

    電気学会研究会資料. LD, リニアドライブ研究会   Vol. LD-05-44-56 ( No. )   5 - 10   2005.11

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  • An Active Aerostatic Spindle with an Axial-Positioning Actuator for Machining Ultra-Micro Scale Structures(Precision positioning and control technology)

    SHINSHI Tadahiko, INAMI Yusuke, HASHIZUME Hitoshi, SATO Kaiji, SHIMOKOHBE Akira

    Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21   2005 ( 3 )   1015 - 1018   2005.10

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    An active aerostatic spindle with an axial-positioning actuator has been developed to aid the fabrication of ultra-precision and compact machine tool elements. The spindle incorporates a pair of radial air bearings that not only work as high-precision radial bearings to support the spindle shaft, but which also act as a linear guide-way in the axial direction. The rotating shaft has a peak-to-peak vibration amplitude of less than 20nm in the axial positioning direction, and an NRRO (None Repeatable Run-Out) of 8nm in the radial direction. In order to evaluate the limit of resolution of the aerostatic spindle for axial machining, ultra-micro steps were machined on oxygen-free copper plates using a single crystal diamond tool. The minimum step-height and surface roughness of the machined structure were 25nm and about 10nmRa, respectively.

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  • Control of an XY Nano-Positioning Table for a Compact Nano-Machine Tool Reviewed International journal

    Guilherme Jorge Maeda, KAIJI SATO, Hitoshi Hashizume, Tadahiko Shinshi

    Proceedings of JSME Int. Conf. LEM 21   Vol. ( No. )   987 - 992   2005.10

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    This paper describes the control of an XY nano-positioning table for a compact nano-machine tool. The aim of its controller design is to provide (1) high motion accuracy, (2) high robustness to disturbance forces and (3) high bandwidth. The controller has a PID element as a tandem compensator and a feedforward compensator. A bandpass filter is added so that the table system can show the mentioned specifications (1) and (2). The reference following characteristic and the robustness to disturbance forces are examined and evaluated theoretically and experimentally. The results prove that the table control system is suitable for a compact ultraprecision machine tool, attaining high positioning accuracy and frequency response up to 500Hz in a circular motion of a 100nm radius.

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  • A micro-magnetic bearing using capacitive axial displacement sensing Reviewed International journal

    Jiro Kuroki, Tadahiko Shinshi, Lichuan Li, Akira Shimokohbe

    Precision Engineering   30 ( 2006 )   54 - 62   2005.8

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  • 第19回米国精密工学会年次大会(ASPE 2004 Annual Meeting)報告

    進士 忠彦

    精密工学会誌   71 ( 1 )   68 - 68   2005.1

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  • Ultraprecision XY positioning table for nano manufacturing systems

    Hayato Yoshioka, HITOSHI HASHIZUME, HIDENORI SHINNO, TADAHIKO SHINSHI, KAIJI SATO

    The Proceedings of The Manufacturing & Machine Tool Conference   Vol. ( No. 04-3 )   103 - 104   2004.11

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    An ultraprecision positioning table system is one of the most important components in nano manufacturing systems. This paper describes an ultraprecision XY positioning table system newly developed. The table is levitated by aerostatic bearings and driven by voice coil motors arranged symmetrically about the driving axes. The table is, consequently, free from the non-linear behavior and the direction dependency. The positioning capability of the developed system has been verified through a series of nano-positioning experiments.

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  • Precision Milling with an Aerostatic Spindle Having an Axial Positioning Function

    INAMI Yusuke, SHINSHI Tadahiko, HASHIZUME Hitoshi, SATO Kaiji, SHIMOKOHBE Akira

    The Proceedings of The Manufacturing & Machine Tool Conference   Vol. ( No. 04-3 )   73 - 74   2004.11

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    There is a demand for an ultra precision machine in a variety of fields such as optical instruments and electronic devices. A precision aerostatic spindle having an axial positioning function is proposed for the ultra precision and compact machine. The spindle has two radial,air bearings that work not only high-precision radial ones but also a linear guideway in the axial direction. The spindle has 15rim positioning resolution at 7,000rpm in the axial direction. This paper deals with an .experimental study of precision milling of oxygen-free copper with a single crystal diamond tool. The height and surface roughness of machined steps are 200nm and 40nmRa, respectively.

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  • Axial displacement measurement using capacitance variation of a spindle

    KUROKI Jiro, SHINSHI Tadahiko, SHIMOKOHBE Akira

    The Proceedings of The Manufacturing & Machine Tool Conference   Vol. ( No. )   71 - 72   2004.11

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    This paper describes a design and performance of a capacitive position sensing in the axial direction of a one-axis-controlled magnetic bearing, which requires in-process displacement measurement and position control of a spindle. The rotor position is measured using a differential variation of capacitance between the rotor and stator. The measurement method is based on the Abbe&#039;s principle. A magnetic bearing structure for -the capacitive position sensing is proposed and designed. Experimental results show that resolution of the capacitive position sensing is a micrometer in 10 kHz bandwidth and 20 μm range.

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  • 新しいナノ構造形成技術 ナノプリント(精密工学の最前線)

    進士 忠彦, 芦田 極, 芦田 極

    精密工学会誌   70 ( 10 )   1215 - 1218   2004.10

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  • XY Nano Positioning Table System

    HITOSHI HASHIZUME, 小松航, Hayato Yoshioka, HIDENORI SHINNO, TADAHIKO SHINSHI, KAIJI SATO

    The Proceedings of Mechanical Engineering Congress, Japan   Vol. 4 ( No. 04-1 )   63 - 64   2004.9

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    Within recent manufacturing environment, there is an increasing demand for nanometer positioning table system with high stiffness, high resolution and high repeatability. In this study, therefore, XY nano positioning table system has been developed. The table is levitated by aerostatic bearings with porous material and driven by six voice coil motors in a non-contact condition. The table system is designed symmetrically about the driving axis and consequently free from nonlinear befavior and direction dependency. The performance of the developed table system has been verified through a series of nano-positioning experiments.

    DOI： 10.1299/jsmemecjo.2004.4.0_63

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  • Precision Control for Rotation About Estimated Center of Inertia of Spindle Supported by Radial Magnetic Bearing Reviewed International journal

    Xiaoyou Zhang, Tadahiko Shinshi, Lichuan Li, Akira Shimokohbe

    JSME International Journal, Series C   Vol. 47 ( No. 1 )   242 - 250   2004.2

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  • A Compact Centrifugal Blood Pump (2nd Report) : Performances of the Centrifugal Pump with a Built-in Motor

    ASAMA Junichi, SHINSHI Tadahiko, HOSHI Hideo, TAKATANI Setsuo, SHIMOKOHBE Akira

    The Proceedings of Mechanical Engineering Congress, Japan   Vol. ( No. )   357 - 358   2004

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    This paper discusses miniaturization of a centrifugal blood pump with a magnetically levitated rotor. In the previous report, the fabricated centrifugal pump with the two-degrees-of-freedom controlled magnetic bearing was driven by the magnetically coupled brushless motor. In order to downsize the centrifugal pump, the motor should be incorporated into the centrifugal pump. A built-in motor consisting of a Halbach permanent magnet array .in a rotor and coreless coils in a stator is proposed. The advantage of the built-in motor is that unbalanced pull in the radial and axial directions of the rotor is not generated, and power consumption of the magnetic bearing to cancel the unbalanced force can be reduced. This report shows design, fabrication and performances of the centrifugal blood pump with the built-in motor.

    DOI： 10.1299/jsmemecjo.2004.5.0_357

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  • Development of Centrifugal Blood Pump with Compact Magnetic Bearing System

    Hoshi H, Yasuda T, Kataoka H, Ohuchi K, Nakamura M, Asama J, Shinshi T, Shimokohbe A, Takatani S

    Journal of Life Support Engineering   Vol. ( No. )   97 - 98   2004

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    DOI： 10.5136/lifesupport.16.Supplement_97

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  • A Compact Centrifugal Blood Pump (1st Report) : A2-DOF Controlled Magnetic Bearing with Magnetic Coupling Drive

    SHINSHI Tadahiko, ASAMA Junichi, HOSHI Hideo, TAKATANI Setsuo, SHIMOKOHBE Akira

    The Proceedings of Mechanical Engineering Congress, Japan   Vol. ( No. )   355 - 356   2004

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    Conventional centrifugal blood pumps with ball or pivot bearings to support an impeller have some problems, such as blood damages and low durability of mechanical parts due to mechanical contact and wear. Recently, various types of magnetic bearings have been proposed and applied to the centrifugal blood pumps, which allow non-contact suspension of the impeller. However, in the magnetic bearings, a reduction of the number of controlled degree-of-freedom (DOF) of the rotor for. miniaturization and low power consumption causes low stiffness in passively controlled directions. The purpose of this study is the realization of a compact centrifugal blood pump with high durability, high stiffness, and low power consumption. In this paper, a two-DOF controlled magnetic bearing with high passive stiffness and low power consumption is proposed. The design, fabrication and performance of a fabricated centrifugal pump with magnetic coupling drive of a brushless motor are discussed.

    DOI： 10.1299/jsmemecjo.2004.5.0_355

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  • A one-axis-controlled magnetic bearing and its performance

    LC Li, T Shinshi, J Kuroki, A Shimokohbe

    JSME INTERNATIONAL JOURNAL SERIES C-MECHANICAL SYSTEMS MACHINE ELEMENTS AND MANUFACTURING   46 ( 2 )   391 - 396   2003.6

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  • A PM-EM type Magnetic Bearing System for Centrifugal Blood Pump Reviewed International journal

    T. Shinshi, D. Nishinaka, J. Asama, H. Kataoka, S. Takatani

    Proc. IIP/ISOS Joint MIPE, Yokohama, Japan   Vol. ( No. )   377 - 378   2003

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    A centrifugal blood pump, in which an impeller is supported by a magnetic bearing, is used as a total artificial heart (TAH) because it is smaller and lighter in weight than other TAHs and also causes less damage to blood due to hemolysis and thrombus. However the magnetic bearing hasnit been sufficiently downsized. In this study, a compact and two-DOF controlled magnetic bearing using permanent magnets and electromagnets is proposed and tested. Furthermore, a Helbach array permanent magnet motor is proposed for integration into the magnetic bearing.

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  • A Magnetic Bearing for Implantable Total Artificial Heart with Centrifugal Pump

    NISHINAKA Daisaku, SHINSHI Tadahiko, ASAMA Junichi, KATAOKA Hiroyuki, TAKATANI Setsuo, SHIMOKOHBE Akira

    The Proceedings of the Machine Design and Tribology Division meeting in JSME   Vol. ( No. )   169 - 170   2003

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    A centrifugal blood pump in which an impeller is supported by a magnetic bearing is supposed to be used for a total artificial heart (TAH) due to possibility of decreasing the volume of the TAH and reducing the destruction of the blood. However the magnetic bearing hasn&#039;t been sufficiently downsized. In this study, a compact and two-DOF controlled magnetic bearing using permanent magnets and electromagnets is proposed and tested. Furthermore, a compact Helbach permanent magnet motor is proposed for integration into the magnetic bearing. We realized the compact and high stiffness magnetic bearing. The rotor diameter is 50mm and the stiffness in the axial direction, which is passively supported by magnetic coupling, is 34,300N/m.

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  • Realization of High Precision Rotation Using Magnetic Bearing

    SHINSHI T, ZHANG X, SHIMOKOHBE A

    The Proceedings of the Machine Design and Tribology Division meeting in JSME   2003 ( 0 )   167 - 168   2003

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    The objective of the study is to realize a magnetic bearing of nanometer rotational accuracy at a high speed. To achieve the high rotational accuracy, disturbance force generated by a built-in motor of the magnetic bearing is examined. A combined repetitive controller having two types of repetitive compensators is proposed to suppress the vibration induced by the disturbance force. Furthermore, to reduce the disturbance force, a linear amplifier is used to drive the induction motor. Experimental results show that the rotational accuracy is improved from 886nm (3σ) to 32nm (3σ) at 5400 min^&lt;-1&gt;.

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  • A simple and small magnetic bearing Reviewed International journal

    J. Kuroki, T. Shinshi, L. Li, A. Shimokohbe

    Proc. IIP/ISOS Joint MIPE, Yokohama, Japan   Vol. ( No. )   121 - 122   2003

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    Conventional magnetic bearings (MBs) require many sensors and electromagnets, and as such have complex structures and systems. Therefore miniaturization of MBs has not yet been realized. In this paper we proposed a simple structure for a MB that can be stabilized by controlling only one-degree-of-freedom [1]. We realized a small MB with a rotor diameter of 6 mm with which stable levitation and rotation was obtained.

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  • Suppression and reduction of Harmonic Disturbance Force for Precision Magnetic Bearing Reviewed International journal

    T. Shinshi, X. Zhang, A Shimokohbe

    JSME Int. Conf. LEM 21,Niigata, Japan   Vol. ( No. )   551 - 554   2003

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    In this paper we discuss a method of realizing high precision radial magnetic bearings that are capable of high-speed operation by the suppression and reduction of the harmonic disturbance forces generated by the induction motor that is used to drive the magnetic bearing. Experimental data shows that a rotational accuracy of 31.8nm (3σ) can be achieved at 5,400rpm for an experimental radial magnetic bearing in which the spindle has a diameter of 80mm and a mass of 3.29kg.

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  • 精密磁気軸受の研究（第４報）－混合繰り返し制御による高精度回転の実現―

    張 暁友, 進士忠彦, 李 黎川, 下河邉 明

    2002年度精密工学会春季大会学術講演会講演集   Vol. ( No. )   15 - 15   2002.3

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  • Simple and Practical Control for Magnetic Levitation System Reviewed International journal

    T. Shinshi, M. Ueno, L. Li, Akira Shimokohbe

    Proc. MOVIC 2002   Vol. ( No. 2 )   1104 - 1109   2002

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    Much effort on modeling, identification and tuning of control parameters is required in order to stabilize magnetic levitation systems because of their negative stiffness and nonlinearity. The purpose of this study is to propose a practical control method which achieves the stability and compensates the nonlinearity without trial and error. The stable levitation and fast positioning of the object are realized in an experimental one-degree-of-freedom system.

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  • 107 High Precision Magnetic Bearing : Spindle motion control at the estimated center of inertia

    SHINSHI T, ZHANG X, LICHUAN L, SHIMOKOHBE A

    The Proceedings of The Manufacturing & Machine Tool Conference   Vol. ( No. )   19 - 20   2001.11

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    The purpose of this study is to realize a magnetic bearing of nanometer rotational accuracy at a high speed. Unbalance force which arises from non-coincidence of the center of rotation and the center of inertia in a spindle decreases the rotational accuracy. The spindle motion control around the center of inertia is desirable for decreasing the unbalance force. In this paper, first, a method for estimating the center of inertia from currents of electromagnets is proposed. Then the spindle is experimentally controlled to rotate around the estimated center of inertia. Experimental results show that the rotational accuracy of the spindle is 13.3nm (3σ) at 2000 min_&lt;-1&gt;, and the electromagnetic control force which synchronizes with the spindle rotation is suppressed to 0.19N which is 6.7% of that around the center of profile.

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  • Current and Future Technologies for Precision Magnetic Bearings(<Special Issue>Advanced Technology for Nano Meter Rotational Accuracy)

    SHINSHI Tadahiko

    Journal of the Japan Society of Precision Engineering   67 ( 7 )   1086 - 1089   2001.7

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    DOI： 10.2493/jjspe.67.1086

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  • Precision Control of Radial Magnetic Bearing Reviewed International journal

    Xiaoyou Zhang, Tadahiko Shinshi, Lichuan Li, Kee-Bong Choi, Akira Shimokohbe

    Proc. of 10th ICPE, Yokohama, Japan   Vol. ( No. )   714 - 718.   2001

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  • １自由度リニアモータ制御による永久磁石反発浮上直動機構の安定化と位置決め

    進士忠彦, 曹 永根, 崔 起鳳, 李黎川, 下河辺明

    2001年度精密工学会秋季大会学術講演会講演集，大阪   Vol. ( No. )   537 - 537   2001

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  • 精密磁気軸受の研究（第３報）－軸の慣性中心での回転制御―

    張暁友, 進士忠彦, 李黎川, 下河邉明

    2001年度精密工学会秋季大会学術講演会講演集   Vol. ( No. )   538 - 538   2001

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  • Stabilization of One Degree-of-Freedom Control Type Levitation Table Using Repulsive Forces of Permanent Magnets

    SHINSHI Tadahiko, CHO Young-Geun, CHOI Kee-Bong, LI Lichuan, SHIMOKOHBE Akira

    シンポジウム電磁力関連のダイナミックス講演論文集   Vol. ( No. )   349 - 352   2001

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  • Ultrahigh acceleration and high speed straight motion mechanism : Design and driving force of experimental actuator

    SATO Kaiji, KATORI Masato, YAMAGATA Mitsuharu, AKIBA Kazuyoshi, SHINSHI Tadahiko, SHIMOKOHBE Akira

    シンポジウム電磁力関連のダイナミックス講演論文集   Vol. ( No. )   153 - 156   2001

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  • F-0938 Practical Control of Magnetic Levitation System

    SHINSHI Tadahiko, UENO Masashi, Li Lichuan, SHIMOKOHBE Akira

    The Proceedings of Mechanical Engineering Congress, Japan   Vol. ( No. )   101 - 102   2001

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    Much effort on modeling, identification of the model parameters and tuning of control parameters are required to stabilize magnetic levitation systems because of their negative stiffness and nonlinearity. The purpose of this study is to propose practical controls which achieve the stability and compensate the nonlinearity without trial and error. In this paper, first, a controller consisting of a balanced current compensator and PD elements is introduced. Then two methods for determining the parameters of the PD elements are proposed. One method is based on the saturation of a current amplifier. The other method is based on the minimum rise time of the levitated object. Finally effectiveness of the proposed methods is examined in an experimental one-degree-of-freedom (1-DOF) system.

    DOI： 10.1299/jsmemecjo.IV.01.1.0_101

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  • 133 New Control of Magnetic Levitation Systems

    Ueno Masashi, Shinshi Tadahiko, Shimokohbe Akira, Li Lichuan, Choi Kee-Bong

    MoViC   Vol. ( No. )   126 - 129   2001

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    Much effort on modeling, identification and tuning of control parameters are required to stabilize magnetic levitation systems because of their negative stiffness and non-linearity. The purpose of this study is to propose a new control which achieves the stability of the levitation system within the moving range without trial and error. In this paper, a controller consisting of a balanced current compensator and PD elements is introduced. Then the balanced current compensator and control parameters of the PD elements are designed using simple experimental data. Finally the stable levitation of the object is realized in an experimental one-degree-of-freedom system.

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  • A Proposal of Practical Control for Magnetic Levitation System (Application to 1–DOF System)

    Masashi Ueno, Tadahiko Shinshi, Kee-Bong Choi, Lichuan Li, Wahyudi, Akira Shimokohbe

    Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C   Vol. 67 ( No. 662 )   3191 - 3196   2001

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    DOI： 10.1299/kikaic.67.3191

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  • A Linear Table System Using Repulsive Forces of Permanent Magnets (Static Stiffness of Levitatied Table and its Stabilization Using Two-Axis Control) Reviewed International journal

    TADAHIKO SHINSHI, 松本淳, KAIJI SATO, Akira Shimokohbe

    Transactions of the Japan Society of Mechanical Engineers, Series C   Vol. 67 ( No. 653 )   232 - 239   2001

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    DOI： 10.1299/kikaic.67.232

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  • Control Performance of Two-stage Positioning System with Intelligent Control Methods Reviewed

    Kaiji Sato, Shinichiro Tsukahara, Tadahiko Shinshi, Akira Shimokohbe

    Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C   Vol. 66 ( No. 648 )   2736 - 2741   2000

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    DOI： 10.1299/kikaic.66.2736

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  • (19)電磁力を利用した非接触運動伝達・案内要素の研究

    進士 忠彦

    日本機械学会誌   103 ( 978 )   298 - 298   2000

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    DOI： 10.1299/jsmemag.103.978_298_1

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  • Control Performance of Two-Stage Positioning System (Comparison of Positioning Performances with Four Kinds of Control Methods) Reviewed

    Kaiji Sato, Manabu Furuya, Fumio Shinano, Tadahiko Shinshi, Hiroyuki Tachikawa, Akira Shimokohbe

    Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C   Vol. 66 ( No. 643 )   885 - 892   2000

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    DOI： 10.1299/kikaic.66.885

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  • Virtual Coordinate Measuring Machine : Evaluation of Dynamic Errors Caused by Inertial and Driving Forces

    SHINSHI Tadahiko, SHIMOKOHBE Akira, SATO Kaiji, WANG Baochun, HAYASHI Shinichiro, CHENG Ye

    The Proceedings of Mechanical Engineering Congress, Japan   Vol. ( No. )   181 - 182   2000

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    Fast probing is an effective way to improve measuring efficiency of coordinate measuring machines (CMM). In the fast probing, the CMM&#039;s structure is deformed and the air bearing gaps are changed by inertial and driving forces so that the probe position is deviated. A virtual-CMM can be used for simulating the measurement errors of the CMM. In this paper, (1) a finite element method (FEM) approach is proposed for establishing the fast probing error model, (2) the deformation of the CMM moving with a constant acceleration is simulated and the error maps of probing points are derived, (3) several gauge blocks are virtually measured in the simulation and measurement accuracies are calculated.

    DOI： 10.1299/jsmemecjo.2000.2.0_181

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  • ホール素子を用いた磁気軸受けの変位推定と位置決め Reviewed

    進士忠彦, 飯島知弘, 佐藤海二, 下河邉明

    1999年度精密工学会春季大会学術講演会講演論文集   Vol. ( No. )   104 - 104   1999

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  • Simple Design Method for Continuous Path Control of Two Axes Table System

    KAIJI SATO, 岡本忠之, Wahyudi, TADAHIKO SHINSHI, Akira Shimokohbe

    Proceedings of JSPE Autum Meeting   Vol. ( No. )   515 - 515   1999

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  • Start-up Characteristics and Positioning Accuracy of Magnetic Lead Screw Mechanism

    SHINSHI Tadahiko, HASHIMOTO Junichi, IZUMI Shunsuke, SATO Kaiji, SHIMOKOHBE Akira

    Transactions of the Japan Society of Mechanical Engineers. Series C.   64 ( 625 )   3637 - 3643   1998.9

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    A magnetic lead screw mechanism (MLS) comprises a conventional steel lead screw and the magnetic nut which is made from a helically-magnetized cylindrical permanent magnet and an external steel cover. A driving force from the screw to the nut is transmitted through the magnetic coupling without mechanical contact. So the MLS can be used in a vacuum, does not make noise and vibration, and is free from lubrication problem. In this paper, first, a positioning mechanism using a MLS, a linear ball guide to support a table, and a DC motor is introduced. Then the start-up characteristics is clarified by simulation using a dynamic model which is identified by experimental data. Finally the table of the mechanism is positioned with using a laser measurement system as a feedback sensor. The results show that the MLS can drive a 4.5 kg table with maximum 3.4 Nm torque without out-of-step, and that the positioning accuracy using PI-D controller with a square root element is about 10 nm.

    DOI： 10.1299/kikaic.64.3637

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  • Precision Magnetic Bearing (3rd Report) : Displacement Estimation by Using Flux Density and Precision Positioning

    SHINSHI Tadahiko, IIJIMA Chihiro, SATO Kaiji, SHIMOKOHBE Akira

    Journal of the Japan Society of Precision Engineering   64 ( 12 )   1779 - 1784   1998

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    Language：Japanese   Publisher：公益社団法人精密工学会  

    The accuracy of ordinary magnetic bearings is not high enough because displacement sensors used for feedback are inaccurate. The aim of the paper is to clarify limitations of the positioning accuracy of an object of an electromagnetic levitation system in which a flux density sensor and a current sensor are used for estimating the displacement of the object. First, a displacement estimation method using flux density and current signals in an electromagnet is discussed. Then a non-contact positioning system controlled by electromagnets, Hall elements and current sensors is introduced. The system is provisionally positioned with a precision displacement sensor. Comparison of the resolution, frequency characteristics and measurement range is made between the estimated displacement and the output of the precision sensor to evaluate the accuracy of the estimation. After that, the object is controlled using the estimated displacement as the feedback signal and the accuracy and stability of the estimated displacement are examined. The experimental results show that the resolutions of estimated displacement and positioning were 0.25 μm, the positioning range was more than ± 100 μm, and the stability of positioning due to the ambient temperature variation was 3.0 μm/℃.

    DOI： 10.2493/jjspe.64.1779

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  • Virtual-CMM for Fast Probing with Constant Acceleration

    Y. Cheng, B. Wang, T. Shinshi, A. Shimokohbe

    １９９８年度精密工学会秋季大会講演会講演論文集   Vol. ( No. )   44 - 44   1998

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  • 2-DOF Controlled Magnetic Guideway Using PM Repulsive force

    MATSUMOTO Jun, SHINSHI Tadahiko, SATO Kaiji, SHIMOKOHBE Akira

    シンポジウム電磁力関連のダイナミックス講演論文集   Vol. ( No. )   447 - 452   1998

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  • 磁気ねじと静圧案内を用いた位置決め機構

    進士忠彦, 佐藤海二, 下河辺明

    1998年度精密工学会春季大会学術講演会講演論文集   Vol. ( No. )   705 - 705   1998

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  • A New Magnetic Lead Screw and Its Basic Characteristics Reviewed

    Tadahiko SHINSHI, Junichi HASHIMOTO, Boching CHEN, KAIJI SATO, Akira SHIMOKOHBE

    Transactions of the Japan Society of Mechanical Engineers   Vol. 64 ( No. 625 )   3637 - 3643   1998

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    Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

    This paper first proposes a magnetic lead screw which is comprised of a conventional steel lead screw and a magnetic nut. The nut is made from a helically-magnetized cylindrical permanent magnet and an external steel cover. A driving force from the screw to the nut is transmitted through the magnetic coupling without mechanical contact. So the magnetic lead screw can be used in vacuum, does not make noise and vibration, and is free from lubrication problem. However, the axial stiffness and maximum carrying load of the magnetic lead screws are smaller than those of ordinary lead screws. Experimental magnetic lead screws are made and it is proved that experimental results of the carrying load and stiffness in the axial direction agree well with simulated ones using the FEM models. It is also clarified that the thread depth and fiat width of lead screw affect the carrying load of the mechanism.

    DOI： 10.1299/kikaic.64.690

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  • Performance Evaluation of Leadscrew Positioning System with Five Kinds of Control Methods(1st Report)-Basic Positioning Performance and Effect of the Coulomb Friction Force on Positioning Performance- Reviewed

    Kaiji SATO, Manabu FURUYA, Tadahiko SHINSHI, Hiroyuki TACHIKAWA, Zainal ABIDIN, Akira SHIMOKOHBE

    Journal of the Japan Society for Precision Engineering   Vol. 63 ( No. 12 )   1759 - 1763   1997.12

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    Language：Japanese   Publisher：The Japan Society for Precision Engineering  

    Leadscrews are often used for a positioning system with a long working range. In the system, though many kinds of control methods such as PID, state feedback and H&lt;SUB&gt;&amp;infin;&lt;/SUB&gt; ones are used, which one is the most suitable control method has not been clarified yet. The purpose of this research is to clarify the most suitable control method for the systems theoretically and experimentally. For this purpose, in this paper first, five controllers are designed based on a predefined control performance specification for a ball screw mechanism: the PID controller, the state feedback controller, the fuzzy controller, the sliding mode controller and the H&lt;SUB&gt;&amp;infin;&lt;/SUB&gt;, controller. Then their positioning performances including the positioning accuracy, the positioning time and the repeatability are examined. Moreover, the effect of Coulomb friction force on positioning performance is also examined and evaluated. The results prove the PID control system to perform well generally. The H&lt;SUB&gt;&amp;infin;&lt;/SUB&gt; controller shows the high repeatability and the high insensitivity to the friction though they did not satisfy the specification. The repeatability and insensitivity of the state feedback control are shown to be worst in all systems.

    DOI： 10.2493/jjspe.63.1614

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  • Performance Evaluation of Leadscrew Positioning System with Five Kinds of Control Methods(2nd Report)-Effect of the Input Step Height and the Table Mass Changes and the Constant Disturbance Force on Positioning Performance- Reviewed

    Kaiji Sato, Fumio SHINANO, Tadahiko SHINSHI, Hiroyuki TACHIKAWA, Shinji OKABE, Akira SHIMOKOHBE

    Journal of the Japan Society for Precision Engineering   Vol. 63 ( No. 12 )   1759 - 1763   1997.12

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    Language：Japanese   Publisher：The Japan Society for Precision Engineering  

    Leadscrews are often used for a positioning system with a long working range. However the suitable controller for such systems has not been clarified yet. The purpose of this research is to clarify the most suitable controller theoretically and experimentally. This paper describes the effect of the input step height and the table mass changes, and the constant disturbance force on the positioning performance of the system with five kinds of controllers such as the PID controller, the state feedback controller, the fuzzy controller, the sliding mode controller and the H&lt;SUB&gt;&amp;infin;&lt;/SUB&gt; controller. The controllers are designed based on a predefined performance specification. The effect is examined theoretically and experimentally. The results show the input step height change influences all the control system, but the performances of the PID control, the state feedback control and the fuzzy control are better than those of the sliding mode control and the Elx control. On the other hand, the sliding mode control and H&lt;SUB&gt;&amp;infin;&lt;/SUB&gt;, control systems are insensitive to the mass change and the disturbance force.

    DOI： 10.2493/jjspe.63.1759

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  • Precision Magnetic Bearing(2ndReport)-Displacement Estimation by an Observer and Sensorless Precision Positioning- Reviewed

    Tadahiko SHINSHI, Kaiji SATO, Akira SHIMOKOHBE

    Journal of the Japan Society for Precision Engineering   Vol. 63 ( No. 5 )   694 - 698   1997.5

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    Language：Japanese   Publisher：The Japan Society for Precision Engineering  

    The positioning and rotational accuracies of ordinary magnetic bearings are not high enough because of low accuracies of displacement sensors. To improve their accuracies, there are two possible methods; use of expensive and precision sensors, or sensorless control by using an observer. In this report, first the mechanism which had electromagnetic characteristics suitable for sensorless displacement measurement by an observer was introduced. Then an observer was designed according to the dynamic model of the mechanism identified through measured frequency characteristics. In order to realize accurate displacement estimation, the dynamic model of the mechanisms was modified so that the estimated displacement coincided with the output of a precision sensor. The experimental results show that the resolution of estimated displacement and sensorless positioning were 150nm and 200nm respectively and the positioning range was above &amp;plusmn;100&amp;mu;m by using the modified observer.

    DOI： 10.2493/jjspe.63.694

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  • 磁気軸受におけるオブザーバの変位推定精度とセンサレス位置決め

    進士忠彦

    1997年度精密工学会春季大会学術講演会講演論文集   Vol. ( No. )   1163 - 1164   1997

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  • 粗微動位置決め機構の制御に関する研究 -状態フィードバック制御,スライディングモード制御の適用-

    佐藤海二, 進士忠彦, 下河邉明

    1997年度精密工学会春季大会学術講演会講演論文集   Vol. ( No. )   1141 - 1142   1997

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  • CMMの周囲温度の動的変動が測定精度に与える影響(共著)

    進士忠彦

    1996年度精密工学会秋季大会学術講演会講演論文集   Vol. ( No. )   301 - 302   1996

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  • Thrust Stiffness of Magnetic Lead Screw Reviewed International journal

    TADAHIKO SHINSHI, Akira Shimokohbe

    シンポジウム電磁力関連のダイナミックス講演論文集   Vol. 96-252 ( No. )   485 - 488   1996

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  • Noncontact precision positioning by electromagnetic actuators

    SHINSHI T

    Proceedings of the Japan/USA Symposium on Flexible Automation; 1996   1151   1996

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  • Precision Magnetic Bearing(1st Report)-Non-Contact Positioning Using Magnetic Force- Reviewed

    TADAHIKO SHINSHI, KAIJI SATO, 橋本 剛, 村井 誠一郎, Akira Shimokohbe

    Journal of the Japan Society for Precision Engineering   Vol. 61 ( No. 11 )   1624 - 1628   1995

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    Language：Japanese   Publisher：公益社団法人精密工学会  

    Magnetic bearings haven&#039;t been used as precision bearings. Purpose of the research is to realize precision magnetic bearings. As the first step, this paper reports the results of the positioning performance of three kinds of non-contact supporting mechanisms using magnetic force; (1) a piezoelectric actuator (PEA) and permanent magnet type, (2) an electromagnet and permanent magnet type; and (3) an electromagnet type. In the first mechanism, the object is levitated by repulsion force of permanent magnets and driven by PEAs; in the second mechanism, the object is levitated the same as the first mechanism and driven by electromagnets; and in the third mechanism, the object is levitated and driven by the same electromagnets. In these mechanisms, high resolution sensor is used as a feedback sensor. The experimental results show that the positioning accuracy is 30nm for PEAs and permanent magnets, 15nm for electromagnets and permanent magnets, and 12nm for electromagnets alone and that the positioning accuracy depends on the sensor resolution.

    DOI： 10.2493/jjspe.61.1624

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  • 超音波照射器

    杉田直広, 進士忠彦, 山本真也, 冨岡 圭太

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    Applicant：国立大学法人東京科学大学

    Application no：特願2023-178036  Date applied：2023.10

    Announcement no：特開2025-068259  Date announced：2025.4

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  • トランスデューサ並びにこれを用いたアクチュエータ及びエネルギハーベスタ

    進士忠彦, 韓冬, 木根諒, 門田 祥悟, 藤原 良元

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    Applicant：国立大学法人東京工業大学, ＴＤＫ株式会社

    Application no：特願2020-084235  Date applied：2020.5

    Announcement no：特開2020-191777  Date announced：2020.11

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  • 光照射装置

    進士忠彦, 李 黎川, 鍾建朋, 小田 光一 , 大久保 弥市, 北村 幸之助

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    Applicant：国立大学法人東京工業大学, ビアメカニクス株式会社

    Application no：特願2019-150460  Date applied：2019.8

    Announcement no：特開2021-032957  Date announced：2021.3

    Patent/Registration no：特許第7329792号  Date registered：2023.8 

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  • トランデューサ並びにこれを用いたアクチュエータ及びエネルギハーベスタ

    進士忠彦, 吾妻範栄, 鈴木 健一 , 門田 祥悟

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    Applicant：国立大学法人東京工業大学, ＴＤＫ株式会社

    Application no：特願2020-503507  Date applied：2019.2

    Announcement no：再表2019/167913  Date announced：2021.2

    Patent/Registration no：特許第7176701号  Date registered：2022.11 

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  • アクチュエータ

    進士忠彦, 吾妻範栄, 鈴木 健一, 鈴木 輝, 一橋 秀輔

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    Applicant：国立大学法人東京工業大学, ＴＤＫ株式会社

    Application no：特願2019-530566  Date applied：2018.7

    Announcement no：再表2019/017387  Date announced：2020.8

    Patent/Registration no：特許第7045672号  Date registered：2022.3 

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  • 光反射装置

    進士忠彦, LI LICHUAN , 荒井 俊介 , 北村 幸之助 , 小田 光一

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    Applicant：国立大学法人東京工業大学, ビアメカニクス株式会社

    Application no：特願2017-085014  Date applied：2017.4

    Announcement no：特開2018-185352  Date announced：2018.11

    Patent/Registration no：特許第6914710号  Date registered：2021.7 

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  • アクチュエータ

    進士忠彦, 藤原良元, 鈴木 健一

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    Applicant：国立大学法人東京工業大学, ＴＤＫ株式会社

    Application no：特願2017-562868  Date applied：2017.1

    Announcement no：再表2017/126577  Date announced：2019.5

    Patent/Registration no：特許第6749346号  Date registered：2020.8 

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  • 体内発電システム

    土方 亘, 佐原 玄太, 進士 忠彦

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    Applicant：国立大学法人東京工業大学

    Application no：JP2015073617  Date applied：2015.8

    Announcement no：WO2016-031734  Date announced：2016.3

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  • 体内発電システム

    土方亘, 佐原玄太, 進士忠彦

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    Applicant：国立大学法人東京工業大学

    Application no：特願2016-545504  Date applied：2015.8

    Announcement no：再表2016/031734  Date announced：2017.6

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  • ハウジング及び血液ポンプ

    高谷 節雄, 進士 忠彦, 西岡 利恭

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    Applicant：メドテックハート株式会社

    Application no：特願2013-223101  Date applied：2013.10

    Announcement no：特開2015-084792  Date announced：2015.5

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  • レーザ加工装置

    中井 孝洋, 福岡 輝章, 中村 直幸, 瀬口 正記, 進士 忠彦, 森本 貴景

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    Applicant：三菱電機株式会社, 国立大学法人東京工業大学

    Application no：特願2013-207593  Date applied：2013.10

    Announcement no：特開2015-071175  Date announced：2015.4

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  • レーザ加工装置

    進士忠彦, 森本貴景, 中井 孝洋 , 中村 直幸 , 福岡 輝章 , 瀬口 正記

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    Applicant：国立大学法人東京工業大学, 三菱電機株式会社

    Application no：特願2013-207593  Date applied：2013.10

    Announcement no：特開2015-071175  Date announced：2015.4

    Patent/Registration no：特許第5769774号  Date registered：2015.7  Date issued：2015.7

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  • レンズ駆動システムおよびレーザ加工装置

    中井 孝洋, 進士 忠彦

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    Applicant：三菱電機株式会社, 国立大学法人東京工業大学

    Application no：特願2012-076158  Date applied：2012.3

    Announcement no：特開2013-202678  Date announced：2013.10

    Patent/Registration no：特許第5642104号  Date issued：2014.11

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  • レンズ駆動装置およびレーザ加工装置

    中井 孝洋, 進士 忠彦

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    Applicant：三菱電機株式会社, 国立大学法人東京工業大学

    Application no：特願2012-076164  Date applied：2012.3

    Announcement no：特開2013-202679  Date announced：2013.10

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  • アクチュエータ

    今城 昭彦, 福岡 輝章, 中井 孝洋, 藤川 周一, 何 冬覚, 進士 忠彦

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    Applicant：三菱電機株式会社, 国立大学法人東京工業大学

    Application no：特願2012-076171  Date applied：2012.3

    Announcement no：特開2013-207966  Date announced：2013.10

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  • 制御装置、レンズ駆動システムおよびレーザ加工装置

    中井 孝洋, 進士 忠彦

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    Applicant：三菱電機株式会社, 国立大学法人東京工業大学

    Application no：特願2012-076158  Date applied：2012.3

    Announcement no：特開2013-202678  Date announced：2013.10

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  • レンズ駆動装置およびレーザ加工装置

    進士忠彦, 中井孝洋

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    Applicant：国立大学法人東京工業大学, 三菱電機株式会社

    Application no：特願2012-076164  Date applied：2012.3

    Announcement no：特開2013-202679  Date announced：2013.10

    Patent/Registration no：特許第5745448号  Date registered：2015.5  Date issued：2015.5

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  • アクチュエータ

    進士忠彦, 何 冬覚, 福岡 輝章, 中井 孝洋, 今城 昭彦, 藤川 周一

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    Applicant：国立大学法人東京工業大学, 三菱電機株式会社

    Application no：特願2012-076171  Date applied：2012.3

    Announcement no：特開2013-207966  Date announced：2013.10

    Patent/Registration no：特許第5656902号  Date registered：2014.12  Date issued：2014.12

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  • レンズ駆動システムおよびレーザ加工装置

    進士忠彦, 中井 孝洋

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    Applicant：国立大学法人東京工業大学, 三菱電機株式会社

    Application no：特願2012-076158  Date applied：2012.3

    Announcement no：特開2013-199601  Date announced：2013.10

    Patent/Registration no：特許第5642104号  Date registered：2014.11 

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  • 血液ポンプ

    高谷 節雄, 赤尾 明久, 進士 忠彦

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    Applicant：メドテックハート株式会社

    Application no：特願2012-022626  Date applied：2012.2

    Announcement no：特開2013-160136  Date announced：2013.8

    Patent/Registration no：特許第5932375号  Date issued：2016.5

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  • 血液ポンプ

    高谷 節雄, 赤尾 明久, 進士 忠彦

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    Applicant：メドテックハート株式会社

    Application no：特願2012-022626  Date applied：2012.2

    Announcement no：特開2013-160136  Date announced：2013.8

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  • レーザ加工装置

    進士忠彦, 岡本 達樹, 中村 直幸, 中井 孝洋, 樋口 峰夫, 福島 一彦

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    Applicant：国立大学法人東京工業大学, 三菱電機株式会社

    Application no：特願2011-019721  Date applied：2011.2

    Announcement no：特開2012-157892  Date announced：2012.8

    Patent/Registration no：特許第5675396号  Date registered：2015.1  Date issued：2015.1

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  • レーザ加工装置

    岡本 達樹, 中村 直幸, 中井 孝洋, 樋口 峰夫, 福島 一彦, 進士 忠彦

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    Applicant：三菱電機株式会社, 国立大学法人東京工業大学

    Application no：特願2011-019721  Date applied：2011.2

    Announcement no：特開2012-157892  Date announced：2012.8

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  • 希土類永久磁石薄膜の製造方法

    石橋 正登, 進士 忠彦, 上原 稔

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    Applicant：日立金属株式会社

    Application no：特願2010-258774  Date applied：2010.11

    Announcement no：特開2012-109490  Date announced：2012.6

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  • 放電加工装置

    佐藤 達志, 湯澤 隆, 進士 忠彦, 上山 吉崇

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    Applicant：国立大学法人東京工業大学

    Application no：特願2010-202348  Date applied：2010.9

    Announcement no：特開2012-056036  Date announced：2012.3

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  • 放電加工装置

    進士忠彦, 上山 吉崇, 佐藤 達志, 湯澤 隆

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    Applicant：国立大学法人東京工業大学, 三菱電機株式会社

    Application no：特願2010-202348  Date applied：2010.9

    Announcement no：特開2012-056036  Date announced：2012.3

    Patent/Registration no：特許第5496029号  Date registered：2014.3  Date issued：2014.3

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  • 使い捨て磁気浮上式遠心ポンプ

    土方 亘, 進士 忠彦, 高谷 節雄

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    Applicant：国立大学法人東京工業大学, 国立大学法人 東京医科歯科大学

    Application no：特願2011-528654  Date applied：2010.8

    Patent/Registration no：特許第5540272号  Date issued：2014.5

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  • 使い捨て磁気浮上式遠心ポンプ

    土方 亘, 進士 忠彦, 高谷 節雄

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    Applicant：国立大学法人東京工業大学, 国立大学法人 東京医科歯科大学

    Application no：JP2010005289  Date applied：2010.8

    Announcement no：WO2011-024470  Date announced：2011.3

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  • 使い捨て磁気浮上式遠心ポンプ

    進士忠彦, 土方亘, 高谷 節雄

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    Applicant：国立大学法人東京工業大学, 国立大学法人東京医科歯科大学

    Application no：特願2011-528654  Date applied：2010.8

    Announcement no：特開(再表)2011/024470  Date announced：2013.1

    Patent/Registration no：特許第5540272号  Date registered：2014.5 

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  • 放電加工装置

    中川 孝幸, 三宅 英孝, 佐藤 達志, 進士 忠彦, 張 暁友, 森田 浩基

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    Applicant：三菱電機株式会社, 国立大学法人東京工業大学

    Application no：特願2010-512996  Date applied：2009.5

    Patent/Registration no：特許第5202624号  Date issued：2013.2

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  • 放電加工装置

    中川 孝幸, 三宅 英孝, 佐藤 達志, 進士 忠彦, 張 暁友, 森田 浩基

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    Applicant：三菱電機株式会社, 国立大学法人東京工業大学

    Application no：JP2009059002  Date applied：2009.5

    Announcement no：WO2009-142140  Date announced：2009.11

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  • 放電加工装置

    進士忠彦, 張 暁友, 森田 浩基, 中川 孝幸, 三宅 英孝, 佐藤 達志

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    Applicant：国立大学法人東京工業大学, 三菱電機株式会社

    Application no：特願2010-512996  Date applied：2009.5

    Announcement no：特開(再表)2009/142140  Date announced：2011.9

    Patent/Registration no：特許第5202624号  Date registered：2013.2 

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  • 電磁駆動型アクチュエータ及び電磁駆動型アクチュエータの製造方法

    進士 忠彦, 上原 稔, 山本 日登志

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    Applicant：日立金属株式会社

    Application no：特願2008-195367  Date applied：2008.7

    Announcement no：特開2010-035348  Date announced：2010.2

    Patent/Registration no：特許第5434004号  Date issued：2013.12

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  • 電磁駆動型アクチュエータ及び電磁駆動型アクチュエータの製造方法

    進士 忠彦, 上原 稔, 山本 日登志

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    Applicant：日立金属株式会社

    Application no：特願2008-195367  Date applied：2008.7

    Announcement no：特開2010-035348  Date announced：2010.2

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  • 磁気浮上式血液ポンプ

    進士忠彦, 下河邉明, 土方亘, 高谷 節雄, 傍島 秀雄

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    Applicant：国立大学法人東京工業大学, 国立大学法人東京医科歯科大学

    Application no：特願2007-284766  Date applied：2007.11

    Announcement no：特開2009-106690  Date announced：2009.5

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  • 使い捨て磁気浮上式血液ポンプ

    進士 忠彦, 下河邉 明, 朝間 淳一, 原 力, 土方 亘, 高谷 節雄, 星 英男

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    Applicant：国立大学法人東京工業大学, 国立大学法人 東京医科歯科大学

    Application no：特願2007-534380  Date applied：2006.9

    Patent/Registration no：特許第4496376号  Date issued：2010.4

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  • 使い捨て磁気浮上式血液ポンプ

    進士 忠彦, 下河邉 明, 朝間 淳一, 原 力, 土方 亘, 高谷 節雄, 星 英男

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    Applicant：国立大学法人東京工業大学, 国立大学法人 東京医科歯科大学

    Application no：JP2006317370  Date applied：2006.9

    Announcement no：WO2007-029623  Date announced：2007.3

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  • 使い捨て磁気浮上式血液ポンプ

    進士忠彦, 下河邉明, 朝間淳一, 原力, 土方亘, 高谷 節雄, 星英男

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    Applicant：国立大学法人東京工業大学, 国立大学法人東京医科歯科大学

    Application no：特願2007-534380  Date applied：2006.9

    Announcement no：再表2007-029623  Date announced：2009.3

    Patent/Registration no：特許第4496376号  Date registered：2010.4 

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  • 遠心ポンプの流量及び揚程測定装置、及び、拍動する循環系の循環状態評価装置

    星 英男, 高谷 節雄, 進士 忠彦, 朝間 淳一

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    Applicant：国立大学法人 東京医科歯科大学

    Application no：特願2005-232501  Date applied：2005.8

    Announcement no：特開2007-044302  Date announced：2007.2

    Patent/Registration no：特許第4769937号  Date issued：2011.7

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  • 遠心ポンプの流量及び揚程測定方法、装置、及び、拍動する循環系の循環状態評価装置

    星 英男, 高谷 節雄, 進士 忠彦, 朝間 淳一

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    Applicant：国立大学法人 東京医科歯科大学

    Application no：特願2005-232501  Date applied：2005.8

    Announcement no：特開2007-044302  Date announced：2007.2

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  • スピンドルモータおよびスピンドルモータ装置

    進士 忠彦, 橋詰 等, 佐藤 海二

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    Applicant：財団法人理工学振興会

    Application no：特願2004-091546  Date applied：2004.3

    Announcement no：特開2005-278359  Date announced：2005.10

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  • 光誘起磁性駆動型アクチュエータ

    進士 忠彦, 宗片 比呂夫, 下河邉 明

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    Applicant：財団法人理工学振興会

    Application no：特願2004-017347  Date applied：2004.1

    Announcement no：特開2005-210872  Date announced：2005.8

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  • 人工心臓用のモータ装置

    進士 忠彦, 李 黎川, 下河邉 明, 高谷 節雄

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    Applicant：国立大学法人東京工業大学

    Application no：特願2003-357979  Date applied：2003.10

    Announcement no：特開2005-121157  Date announced：2005.5

    Patent/Registration no：特許第4557245号  Date issued：2010.7

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  • 人工心臓用の磁気軸受およびモータ装置

    進士 忠彦, 李 黎川, 下河邉 明, 高谷 節雄

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    Applicant：財団法人理工学振興会

    Application no：特願2003-357979  Date applied：2003.10

    Announcement no：特開2005-121157  Date announced：2005.5

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  • 軸方向または径方向に動圧軸受を有する遠心血液ポンプ

    高谷 節雄, 片岡 弘之, 飯田 智也, 渡邉 宣夫, 大内 克洋, 中村 直人, 進士 忠彦

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    Applicant：国立大学法人 東京医科歯科大学

    Application no：特願2003-355718  Date applied：2003.10

    Announcement no：特開2005-118237  Date announced：2005.5

    Patent/Registration no：特許第4257417号  Date issued：2009.2

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  • 軸方向または径方向に動圧軸受を有する遠心血液ポンプ

    高谷 節雄, 片岡 弘之, 飯田 智也, 渡邉 宣夫, 大内 克洋, 中村 直人, 進士 忠彦

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    Applicant：星 英男

    Application no：特願2003-355718  Date applied：2003.10

    Announcement no：特開2005-118237  Date announced：2005.5

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  • 磁気軸受およびそれを備えた軸受装置

    李 黎川, 進士 忠彦, 下河邉 明

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    Applicant：国立大学法人東京工業大学

    Application no：特願2002-161183  Date applied：2002.6

    Announcement no：特開2004-003572  Date announced：2004.1

    Patent/Registration no：特許第4320420号  Date issued：2009.6

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  • 磁気軸受およびそれを備えた軸受装置

    李 黎川, 進士 忠彦, 下河邉 明

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    Applicant：財団法人理工学振興会

    Application no：特願2002-161183  Date applied：2002.6

    Announcement no：特開2004-003572  Date announced：2004.1

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  • 磁気軸受の制御装置および制御方法

    進士 忠彦, 下河邉 明

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    Applicant：国立大学法人東京工業大学

    Application no：特願2002-063189  Date applied：2002.3

    Announcement no：特開2003-262225  Date announced：2003.9

    Patent/Registration no：特許第4300344号  Date issued：2009.5

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  • 電磁アクチュエータ

    進士 忠彦, 下河邉 明

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    Applicant：財団法人 理工学振興会

    Application no：特願2001-267151  Date applied：2001.9

    Announcement no：特開2003-079122  Date announced：2003.3

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  • 磁気ねじ

    下河辺 明, 進士 忠彦, 橋本 純一

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    Applicant：光洋機械工業株式会社

    Application no：特願平8-226044  Date applied：1996.8

    Announcement no：特開平10-047450  Date announced：1998.2

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  • 回転電機

    小谷 尚史, 小俣 剛, 妹尾 正治, 小村 孝夫, 竹田 高広, 阿部 拓也, 進士 忠彦, 松原 謙一郎, 與那嶺 操

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    Applicant：株式会社日立製作所

    Application no：特願平7-214853  Date applied：1995.8

    Announcement no：特開平9-065598  Date announced：1997.3

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  • 回転電機

    竹田 高広, 小俣 剛, 朝吹 弘, 渡部 隆, 石川 芳壽, 妹尾 正治, 與那嶺 操, 進士 忠彦, 小谷 尚史

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    Applicant：株式会社日立製作所

    Application no：特願平5-324435  Date applied：1993.12

    Announcement no：特開平7-177697  Date announced：1995.7

    Patent/Registration no：特許第3128416号  Date issued：2000.11

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  • 回転電機

    竹田 高広, 小俣 剛, 朝吹 弘, 渡部 隆, 石川 芳壽, 妹尾 正治, 與那嶺 操, 進士 忠彦, 小谷 尚史

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    Applicant：株式会社日立製作所

    Application no：特願平5-324435  Date applied：1993.12

    Announcement no：特開平7-177697  Date announced：1995.7

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  • 回転電機

    進士 忠彦, 井田 道秋, 松原 謙一郎, 田中 基八郎, 與那嶺 操

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    Applicant：株式会社日立製作所

    Application no：特願平5-296255  Date applied：1993.11

    Announcement no：特開平7-154940  Date announced：1995.6

    J-GLOBAL

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  • 回転電機

    松原 謙一郎, 田中 基八郎, 井田 道秋, 進士 忠彦, 與那嶺 操, 小俣 剛, 竹田 高広, 小谷 尚史

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    Applicant：株式会社日立製作所

    Application no：特願平5-183669  Date applied：1993.7

    Announcement no：特開平7-035147  Date announced：1995.2

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Awards

  • 27th International Conference on Mechatronics Technology (ICMT 2024) Best Paper Award

    2024.11   ICMT 2024 Executive Committee  

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  • 功労賞

    2024.11   日本AEM学会  

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  • 功労賞

    2024.3   精密工学会  

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  • FA財団論文賞

    2023.12   財団法人 FA財団トップ  

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  • FA財団論文賞

    2021.12   一般財団法人 FA財団  

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  • 精密工学会論文賞

    2021.3   精密工学会  

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  • 23rd International Conference on Mechatronics Technology Best paper award

    2019.10   23rd International Conference on Mechatronics Technology  

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  • 精密工学会論文賞

    2019.3   精密工学会  

    進士 忠彦

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  • 22nd International Conference on Mechatronics Technology Best paper award

    2018.10   22nd International Conference on Mechatronics Technology  

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  • SAGE Best Paper Award 2016

    2017.7   The Editorial Board of Proceedings of the Institution of Mechanical Engineers(IMechE), Part H, Journal of Engineering in Medicine  

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  • Best Paper Award

    2014.10   18th International Conference on Mechatronics Technology  

    SHINSHI Tadahiko

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  • 最優秀論文賞

    2014.7   International Journal of Automation Technology  

    進士 忠彦

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  • 16th International Conference on Mechatronics Technology 最優秀論文賞

    2012.10  

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  • 14th International Machine Tool Engineers' Conference 優秀ポスター賞

    2010.10  

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  • ファナックFAロボット財団論文賞

    2007.3   財団法人ファナックロボット財団  

    進士 忠彦

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  • 精密工学会論文賞

    2006.3   精密工学会  

    進士 忠彦

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  • Tokyo Tech Award for Challenging Research

    2005.12  

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  • 精密工学会「優秀会誌企画賞」

    2004   精密工学会  

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  • 10th International Conference on Precision Engineering (ICPE) Outstanding Poster Award

    2001  

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  • 日本機械学会奨励賞（研究）

    2000   日本機械学会  

    進士 忠彦

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Research Projects

  • Flexible magnetic MEMS devices using highly corrosion-resistant and high-strength FePt thick film magnets

    Grant number：25K01143  2025.4 - 2028.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Grant amount：\18850000 （ Direct Cost: \14500000 、 Indirect Cost：\4350000 ）

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  • ウェアラブル人工肝臓用静音ソフト磁気流体血液ポンプ

    Grant number：24KF0148  2024.10 - 2027.3

    日本学術振興会  科学研究費助成事業  特別研究員奨励費

    進士 忠彦

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    Grant amount：\2000000 （ Direct Cost: \2000000 ）

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  • Research on MEMS devices utilizing thick film permanent magnet

    Grant number：19H00738  2019.4 - 2024.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    Shinshi Tadahiko

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    Grant amount：\45110000 （ Direct Cost: \34700000 、 Indirect Cost：\10410000 ）

    In this study, the following studies were carried out to realize MEMS devices using thick-film magnets, which can contribute to the realization of microactuators for image stabilization for smartphone cameras, micro motors for lens iris drive, and micro-generators for mobile devices: 1) Investigation of thick-film magnet deposition conditions using pulsed laser deposition method. In particular, the effects of the base film on substrate adhesion and magnetic properties were investigated. In addition, the magnet transfer method using the LIFT method was also investigated. 2) Investigation of fine multi-pole magnetization and Halbach magnetization using the laser local heating method and the development of a magnetic batch transfer method during heating. 3) The fabrication methods of guide mechanisms for magnetic MEMS and high-density, high-aspect micro coils were investigated.

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  • Rare-earth thick film magnets with in-plane anisotropy prepared by multi-layers and the application to miniaturized devices

    Grant number：19H02173  2019.4 - 2023.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    NAKANO MASAKI

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    Grant amount：\17810000 （ Direct Cost: \13700000 、 Indirect Cost：\4110000 ）

    To prepare thick-film magnets applied to small devices, we systemically investigated the following five contents by using pulsed laser deposition (PLD) method with the high deposition rate. (1) Investigation of adhesion between Si substrates with natural or thermal oxidize layers and Nd-Fe-B film magnets, (2) Micro-magnetization of Nd-Fe-B film magnets on PLD-made glass films, (3) Preparation of glass and α-Fe(Fe-Co) multi-layered films, (4) Use of Al-O layer as an alternative material for glass layer considering oxidation suppression of Nd-Fe-B films, (5) Preparation of Al-O and α-Fe multi-layered films.
    Considering the above-mentioned results, we attempted to obtain fundamental data of multilayered films consisting Nd-Fe-B layers and non-magnetic layers (glass or Al-O layers).

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  • Micro Multi-DOF Magnetic Actuators Using Micro Magnetization Technology

    Grant number：16H04254  2016.4 - 2019.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    SHINSHI Tadahiko, NAKANO Masaki, HIJIKATA Wataru, NAGAMINE Yasuyuki, MATSUTANI Akihiro, HAN Dong, SUZUKI Kenichi, KADOTA Shogo

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    Grant amount：\17290000 （ Direct Cost: \13300000 、 Indirect Cost：\3990000 ）

    In this project, we studied a thin plate machining method for sintered NdFeB magnet with small damage and a thick film magnet deposition method using PLD (pulsed laser deposition). Micro processing and micro magnetization utilizing laser assisted heating were also studied for the magnet. By combining these results with conventional MEMS technology, multi-degree-of-freedom micro actuators which can be used for mobile devices such as smart phones were proposed, fabricated and evaluated.

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  • Implantable power generation system utilizing muscle contractions controlled by electrical stimulation

    Grant number：16K14142  2016.4 - 2018.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Exploratory Research

    SHINSHI Tadahiko

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    Grant amount：\3640000 （ Direct Cost: \2800000 、 Indirect Cost：\840000 ）

    An implantable power generation system driven by muscle contractions for supplying power to active implantable medical devices (AIMDs), such as pacemakers and neurostimulators, is proposed. In this system, a muscle is intentionally contracted by an electrical stimulation in accordance with the demands of the AIMD for electrical power. In this study, using the gastrocnemius muscle of a toad, the characteristics of muscle contraction by electricity stimulation was surveyed. Furthermore, micro rotary and linear type generators converting the muscle motion to electric power were proposed and tested.
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  • Preparaion and micro-machining of sub-milli thick-film magnets prepared using a high depo

    Grant number：15H03978  2015.4 - 2018.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    NAKANO Masaki, SHINSHI Tadahiko

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    Grant amount：\17160000 （ Direct Cost: \13200000 、 Indirect Cost：\3960000 ）

    In the study, we could achieve the following two items to apply rare-earth thick-film magnets prepared using a PLD method with a high deposition rate to MEMS applications. (1)Preparation of rare-earth film magnets with good magnetic properties deposited on Si and glass substrates and (2)Adoption of micro-machining technology to the films. Firstly, ①we could enhance the magnetic properties of PLD-made films using a control of microstructure together with a usage of a under layer. Secondly, ②we could obtain a fundamental technique for the development of MEMS comprising the above-mentioned films thorough the micro-machining technology.

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  • Study on impeller dynamics in blood and its application to additional functions in a magnetically-levitated ventricular assist device

    Grant number：15K17959  2015.4 - 2017.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Young Scientists (B)

    Hijikata Wataru, SHINSHI Tadahiko, MARUYAMA Osamu, SAKOTA Daisuke

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    Grant amount：\4160000 （ Direct Cost: \3200000 、 Indirect Cost：\960000 ）

    Ventricular assist devices (VADs) have been used for a long-term support of heart failure patients. In addition to the development of the devices, development of technologies to improve both QOL and survival rate is also desired these days. In this study, we have developed a method for measuring the blood viscosity in a sensorless manner and applied it to high-accurate estimation of the flow rate and detection of blood coagulation.
    In this method, sinusoidal current is applied to the electromagnet and impeller is vibrated. By measuring the phase difference of the impeller displacement and current in the electromagnet, blood viscosity was estimated. This method is applied to the flow rate estimation, which consists of the motor torque, rotational speed of the impeller and viscosity. Finally, the coagulation of porcine blood inside the pump was detected by measuring the viscosity of blood.

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  • High aspect and micro magnetization of NdFeBr magnet utilizing laser assist heating

    Grant number：26630036  2014.4 - 2016.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Exploratory Research

    SHISNHI TADAHIKO

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    Grant amount：\3900000 （ Direct Cost: \3000000 、 Indirect Cost：\900000 ）

    In built-in cameras for smartphones, electromagnetic actuators with permanent magnets are used to drive the lens for image stabilization. The miniaturization of the electromagnetic actuators is required to minimize the built-in cameras. However, such actuators have reached the limit of miniaturization due to the limitation of micro magnetization of neodymium magnet. To solve this problem, in this study, micro magnetization method using laser assist heat for neodymium micro magnet as an alternative to pulse magnetization is developed.

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  • Design of maglev ventricular assist devices considering bearing performance and blood damage

    Grant number：24360059  2012.4 - 2015.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    SHINSHI Tadahiko, TAKATANI Setsuo

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    Grant amount：\18200000 （ Direct Cost: \14000000 、 Indirect Cost：\4200000 ）

    Continuous flow type ventricular assist devices (VADs) have been clinically approved and used used in Japan, Europe and United states. In order to improve the durability and hemo-compatibility, the use of magnetic bearings and hydrodynamic bearings have been studied. In this research, in order to reduce the hemolysis and thrombus formation in the pumps using non-contact bearings, the VAD design method considering not only basic non-contact bearing characteristics such as load capacity, stiffness and damping, but also blood flow between the impeller and the stator， has been studied. This project mainly consisted of the CFD analysis and PIV based flow measurement of the blood pumps, the development of new bearingless motors considering the blood flow and the sensorless estimation of blood viscosity.

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  • Development of a wearable, pediatric centrifugal circulatory support system

    Grant number：23300164  2011.4 - 2014.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    TAKATANI Setsuo, SHIONO Motomi, SHINSHI Tadahiko, SAKOTA Daisuke

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    Grant amount：\18590000 （ Direct Cost: \14300000 、 Indirect Cost：\4290000 ）

    In this study, we focused upon basic research leading to development of a pediatric circulatory support system. To meet this goal, we have designed a small centrifugal blood pump with a 30mm diameter impeller having 6 straight vanes, supported by a hydrodynamic bearing at its center and driven through outer-radial magnetic coupling to the external motor. The pump diameter measured to be 60mm and its height including the motor to be 30mm, yielding the displaced volume of 85ml and the priming volume of 5ml. The pump provided the flow of 1.0 – 1.5 L/min against the afterload of 100mmHg at the pump speed of 2500 rpm. The pump can be implanted in either extra-corporeally or intra-corporeally inside the thorax from the left ventricular apex to the descending aorta. Because of its small size and extremely small priming volume, it can be used for circulatory support from fetuses, neonates to children bridging to heart transplantation and other more advance therapies.

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  • Micro multi-pole magnetization of NdFeB magnet and its application to MEMS devices

    Grant number：23656117  2011 - 2012

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Exploratory Research

    SHINSHI Tadahiko

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    Grant amount：\3900000 （ Direct Cost: \3000000 、 Indirect Cost：\900000 ）

    Recently, a multilayered thin film Nd2Fe14B/Ta permanent magnet (TFPM), which not only has a high remnant flux density and a high coercive force similar to those of conventional sintered bulk neodymium magnets, but also has high heat tolerance, was developed. In this study, micro magnetization assisted by laser heating under an external DC magnetic field was proposed and tested. The laser beam conditions were determined using unsteady heat conduction analysis. Using a magnetic field analysis simulator, neodymium PM arrays are designed to apply the DC magnetic field to the TFPM. Magnetized strips of 0.1mm in width were patterned in the TFPM of 4.5micrometer in thickness Agreement between measured and simulated magnetic flux densities over the TFPM was obtained. Furthermore, a MEMS linear motor utilizing TFPM was also developed.

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  • Multifunctional and Highly Reliable Ventricular Assist Devices Utilizing Maglev Centrifugal Pump Technology

    Grant number：21360072  2009 - 2011

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    SHINSHI Tadahiko, TAKATANI Sestuo

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    Grant amount：\19240000 （ Direct Cost: \14800000 、 Indirect Cost：\4440000 ）

    Implantable Ventricular Assist Devices(VAD) have already been applied to clinical practices in Europe, the United States and Japan. In the near future, the number of VAD implantations is expected to become more than the number of heart transplants. This research is related to implantable centrifugal blood pump systems utilizing magnetic bearing technology, which can achieve high durability and high biocompatibility of the VADs. In this report, the realization of multifunctional, highly reliable and compact VADs, which can estimate the blood flow and the blood viscosity, have backup functions in the case of mechanical and electrical faults, and can be implanted in children's bodies, are discussed.

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  • 高性能永久磁石薄膜マイクロアクチュエータの基礎研究

    Grant number：20656029  2008 - 2009

    日本学術振興会  科学研究費助成事業  挑戦的萌芽研究

    進士 忠彦, 桜井 淳平

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    Grant amount：\3500000 （ Direct Cost: \3500000 ）

    半導体プロセスを用いたMEMS(Micro Electro Mechanical Systems)研究において,未開拓領域である高性能永久磁石薄膜を用いたマイクロアクチュエータの実現を目的とし,研究を実施した.具体的には,永久磁石薄膜として,従来にない高い保磁力と残留磁束を有するNdFeB/Ta多層膜を利用したボイスコイルモータタイプMEMSアクチュエータの提案と製造方法の検討,ならびにその性能評価を実施した.
    本年度は,1)昨年度試作した片持ちはりの先端に多層膜永久磁石をスパッタで堆積し固定部の空心コイルに電流を通電することではりが変位するマイクロアクチュエータに,薄膜コイルなどを導入するなど,MEMSプロセスに適する構造に変更した.2)はり先端変位測定のため,片持ちはり根元にPt製のひずみケージを製作する手法を開発し,変位測定を実施した.3)上記の変位信号を用いてフィードバック制御することにより,高速・高精度な位置決めを実現した.4)矩形の永久磁石薄膜を,ヒンジで4方向より支持し,その下面に配置した,2個1組の空心コイルを用いて,永久磁石を面外並進・傾き方向に駆動可能な新たな2自由度アクチュエータを提案・試作した.
    なお,これらのアクチュエータの試作工程において,薄膜永久磁石堆積後の残留変形が問題となった.このため,Cr膜を薄膜永久磁石と貼り合わせ,残留応力を相殺する方法を提案した.単純な片持ちはりを用いた予備実験では有効性を示せたが,より構造が複雑な2自由度アクチュエータ場合は,十分な効果を示すことができず,今後の検討が必要となった.

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  • Compact Ventricular Assist Devices Using Magnetic Bearings

    Grant number：19360073  2007 - 2008

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    SHINSHI Tadahiko, ZHANG Xiaoyou, TAKATANI Setsuo

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    Grant amount：\19370000 （ Direct Cost: \14900000 、 Indirect Cost：\4470000 ）

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  • Feasibility Study of Advanced Circulatory Support Devices that Enable Recovery and Optimal Therapy of Heart Failure in Pediatric and Adult Patients

    Grant number：18300149  2006 - 2007

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    TAKATANI Setsuo, OHUCHI Katsuhiro, HOSHI Hideo, KATAOKA Hiroyuki, IWASAKI Yasuhiko, SHINSHI Tadahiko

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    Grant amount：\17470000 （ Direct Cost: \15100000 、 Indirect Cost：\2370000 ）

    This study addresses design and development of advanced circulatory support devices intended for short and intermediate duration of at least one month without requiring anti-coagulation therapy in children and adults, for allowing complete recovery, or for bridging to more advanced treatment modalities such as implantable devices or heart transplantation.
    To achieve the goal, for adult applications a disposable, magnetically levitated (Mag-lev) centrifugal blood pump having a prime volume of 23ml was designed by utilizing a compact magnetic bearing. The compact magnetic bearing was implemented by combining two-degree-of freedom active magnetic bearing in X- and Y- directions with permanent magnets passively restoring the position of impeller rotor in the axial and tilting axes. The rotation of impeller was attained through radial magnetic coupling between the inner driver magnet mounted on the motor shaft and the follower magnet molded inside the impeller-rotor. The pump performance analysis showed the maximum head pressure of 800mmHg against the pump flow of 5L/min at the rotational speed of 4500rpm. The hemolysis study revealed that the mechanical damage to blood cell elements was about the half that of the clinically used BioPump BPX-80. To date in vivo study using calves has shown that the pump system can meet requirements for one-week circulatory support in adult patients with minimum requirement of anti-coagulation therapy.
    As for pediatric application, a miniature centrifugal blood pump TinyPump having prime volume of 5ml and stable low flow control capability to 0.2L/min has been designed for 3-10Kg neonates and infants. The diameter of the impeller rotor is 30mm with six straight vanes resulting in the external diameter of the pump to be 50mm. The pump head is disposable, and easily attached and detached from the re-usable motor driver unit. The impeller rotor is rotated by radial magnetic coupling force between the 6 pole external drive magnets mounted on the motor shaft and the magnets molded inside the impeller-rotor. The impeller-rotor is supported by a hydrodynamic bearing at its center. The gap clearance of 150μm in the bearing of the impeller-rotor resulted in the secondary flow through the bearing area to be about 10% of the external flow. The application of the TinyPump for heart-lung bypass studies in 3Kg piglets revealed superior performance in comparison against the pediatric BioPump BP-50. The TinyPump was also used to support lung circulation in the single ventricle model to show stable pulmonary circulation. The TinyPump has also been used as a left ventricular assist device in the 3.5Kg swine and 10Kg Shiba-goats, demonstrating stable low flow, non-hemolytic and biocompatible support of circulation to the period up to two weeks. The study continues to demonstrate the stable and biocompatible performance in 10Kg Shiba-goats for the duration of 1-2 months.

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  • Centrifugal type artificial heart of high durability using a magnetic bearing

    Grant number：17360070  2005 - 2006

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    SHINSHI Tadahiko, SHIMOKOHBE Akira, TAKATANI Setsuo, ZHANG Xiaoyou

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    Grant amount：\15200000 （ Direct Cost: \15200000 ）

    Implantable ventricular assist devises and disposable blood pumps have been developed for heart disease patients.
    1)Implantable ventricular assist devise
    A magnetically levitated (maglev) centrifugal blood pump (CBP), intended for use as a ventricular assist device, needs to be highly durable and reliable for long term use without any mechanical failure. Furthermore, maglev CBPs should be small enough to be implanted into patients of various size and weight. We have developed a compact maglev CBP employing a two-degree-of-freedom controlled magnetic bearing, with a magnetically suspended impeller directly driven by an internal brushless direct current (DC) motor. The magnetic bearing actively controls the radial motion of the impeller and passively supports axial and angular motions using a permanent magnet embedded in the impeller. The overall dimensions of the maglev CBP are 65 mm in diameter and 40 mm in height. The total power consumption and pump efficiency for pumping 6 L/min against a head pressure of 105 mm Hg were 6.5 W and 21%, respectively. The hemolytic characteristics of the maglev CBP were compared with those of the Medtronic Biomedicus BPX-80, which demonstrated the superiority of the maglev CBP.
    2)Disposable blood pump
    A magnetically levitated (MagLev) centrifugal blood pump (MedTech Dispo) has been developed for a disposable extracorporeal system. The pump design is aimed at eliminating mechanical contact of an impeller, realization of a simple disposable mechanism, and reduction of the heating effect on blood due to a motor and a magnetic bearing. The disposable pump head with priming volume of 23 mL consists of top and bottom housings, the impeller and the rotor with diameter of 50 mm. The pump can provide more than 300 mmHg against 5 L/min. Normalized index of hemolysis (NIH) of the MedTech Dispo is 0.0025 ± 0.0005 g/100L at 5 L/min against 250 mmHg. This is one seventh of that of Bio Pump BPX-80 (Medtronic Inc, U.S.A.) of 0.0170 ± 0.0096 g/100L. These results show that the MedTech Dispo realizes high pump performance and low blood trauma.

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  • 強磁場を用いたプラスチック高速分離法の研究

    Grant number：17656057  2005

    日本学術振興会  科学研究費助成事業  萌芽研究

    進士 忠彦

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    Grant amount：\3100000 （ Direct Cost: \3100000 ）

    本研究では,資源リサイクルのため,反磁性体であるプラスチックを材質毎に分別する方法を提案し,その有効性を検証することを目的とする,具体的には,落下中のプラスチック粒に,超伝導磁石やパルス磁場発生装置により,強磁場,磁場勾配を与えることで,プラスチック毎の磁化率の違いから異なる電磁力を発生させ,粒の落下軌道を変更することで,プラスチックの分離の実現を目指す.本年度(補欠採択のため平成17年10月研究開始)は,現有の超伝導磁石(JMTD-10T 100FT,ジャパンスーパーコンダクタテクノロジー)(最大磁束密度10T)近傍で,落下中の粒状のプラスチックに,どの程度の電磁力が働き,軌道変更が可能かを,数値シミュレーションで見積もり,その結果に基づき,超伝導磁石周りに,所要の磁場空間を形成するための電磁コアやコイル,また,パルス磁場(現有の永久磁石の着磁装置の利用を検討)を発生する空芯コイルの設計と試作を進めることを目的とした.また,同時に,落下中の粒状プラスチックの軌道変化を計測するための,計測法の検討も進める.
    現時点で得られた成果としては,既存の超伝導マグネットを,集中コイルでモデル化し,その磁場分布からの電磁力を受けながら,自由落下するプラスチックの軌道変化を数値解析的にもとめた.ポリエチレン,ポリプロピレン,ポリスチレン,ポリエチレンテレフタレートなどを対象として,1m程度の自由落下の初期に,ボア径0.1mの超電導マグネットの前を通過させることで,最大20mm程度の落下地点の差異が発生することを算出した.この現象の実験的な確認のため,既存の超伝導磁石の調整と,本予算にて購入した高速度カメラを用いた軌跡確認実験装置の構築を現在,急いでいるところである.

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  • Study for Establishment of a Program Officer System of the Gant-in-Aid for Scientific Research

    Grant number：16800053  2004 - 2005

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Special Purposes

    HASUO Masahiro, AKAIKE Takaaki, YUASA Hideya, ARIMOTO Kazuhiro, SUZUKAWA Kazumi, SHINSHI Tadahiko

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    Grant amount：\8000000 （ Direct Cost: \8000000 ）

    The results of this survey study for establish of a new program officer (PO) system of the Grant-in-Aid for Scientific Research (Kakenhi) are as follows;
    1 Survey study on foreign competitive research funding systems and their PO systems
    We on-site visited NIH and NSF (USA), RC (UK), A*STAR (Singapore), NSC (Taiwan), KRF (Republic of Korea), HFSP (Japan-North America-Europe), ESF (EU) and DFG (Germany) to learn and investigate their competitive research funds or grants and their PO systems.
    2 Survey study on domestic competitive research funding systems and their PO systems
    We learned and investigated competitive research fund or grant systems and PO systems of the Kakenhi (MEXT and JSPS), the Special Coordination Funds for Promoting Science and Technology (JST), the Industrial Technology Research and Development Projects (NEDO) and Research project for Utilizing Advanced Technologies in Agriculture, Forestry and Fisheries, Technical Development Program for Making Agribusiness in the Form of Utilizing the Concentrated Know-How from Private Sector (MAFF). We made a list about them for comparison.
    3 Inquiry surveys on the PO system in Kakenhi of MEXT
    We carried out questionnaire surveys on roles and operations of POs in the Kakenhi system of MEXT, their possible carrier plan, and so on, to members of the referee boards, researchers supported by the Kakenhi of MEXT and PO's affiliations. The results were analyzed to extract their awareness, understanding, opinions and demands for the Kakenhi.
    4 Enlightenment activities and inquiry surveys on the Kakenhi and PO systems
    With a proposal of this project we carried out symposiums and panel discussions on the Kakenhi and PO systems in annual meetings of the Chemical Society of Japan, the Japan Society of Mechanical Engineers and the Japanese Biochemical Society. We also carried out questionnaire surveys on the Kakenhi and PO systems to participants on site. The results are analyzed to extract their awareness, understanding, opinions and demands for the Kakenhi. The results were also utilized to validate the effect of our enlightenment activities.

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  • Research on thin film metallic glasses as MEMS material and those three dimensional fabrication methods

    Grant number：15206015  2003 - 2005

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    SHIMOKOHBE Akira, SHINSHI Tadahiko, HATA Seiichi, SAKURAI Junpei

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    Grant amount：\50050000 （ Direct Cost: \38500000 、 Indirect Cost：\11550000 ）

    In this research, we aimed at realization of new thin film metallic glass as MEMS material that had outstanding characteristics and fabrication of three dimensional MEMS made of thin film metallic glass by developing fundamental research and applications on thin film metallic glasses and those micro fabrication methods. More specifically, the following items were examined and clarified.
    * Fundamental research.
    a) Search for new thin film metallic glasses : Ru based thin film metallic glass (Ru_<75>Zr_<24>Al_1, glass transition tempereture : Tg=902K, crystallize temperature : Tx=973K) was discovered by combinatorial arc plasma deposition. Moreover, Cu based thin film metallic glass (Cu_<50>Zr_<50>, Tg:672K, Tx:715K)was fabricated by multi-cathode carousel type sputtering system.
    b) Evaluation of new thin film metallic glass property : The mechanical property of Ru based thin film metallic glass and Cu based thin film metallic glass were measured. Both thin film metallic glasses showed the good mechanical property and over 1 GPa of tensile strength.
    c) Improvement of thin film metallic glass property : Pd based thin film metallic glass properties, such as resistivity and Young's modulus, were improved by annealing at the supercooled liquid region.
    * Applications.
    a) Multi degrees of freedom micro actuator : A new two-degrees-of-freedom (2-DOF) is constructed using a bent microbeam of a Pd-based thin film metallic glass with two actuating PZT films. The fabricated actuator acts as 2-DOF microactuator with an approximately 10-micron-stroke in each direction.
    b) Micro domes by micro blowing Micro domes that are made of thin film metallic glass are successfully demonstrated. First, micro blowing using sealed Ar gas was examined. The process principal was based on that TFMG soften in the supercooled liquid region and the Ar gas expanded with heat in a vacuum. Next, micro blowing using seal outgas material (Cu_3N) was examined. 10×10 integrated micro domes that a diameter of 100μm and pitch of 120μm had formed.
    c) Activity electronic device : We proposed a new type of an on-chip micro variable inductor fabricated by using three dimensional micro forming of thin film metallic glass. The coil height can be changed from zero to several hundred micrometers. The inductance was changed about 3% by depending on the height of a coil.

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  • 光・磁気駆動型マイクロアクチュエータの基礎研究

    Grant number：15656044  2003 - 2004

    日本学術振興会  科学研究費助成事業  萌芽研究

    進士 忠彦, 下河辺 明, 宗片 比呂夫

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    Grant amount：\2900000 （ Direct Cost: \2900000 ）

    本研究では,はじめに,GaAs-Fe/GaAs薄膜を,二層成長によって作製し,その磁化測定や,X線回折測定を行なうことで試料の評価を行なった.200℃の低温で作製した二層成長試料に,熱処理を加えることによって,約0.9×10^<-9>Wb/mの大きな光誘起磁化変化を示す試料を作製したが,試料の温度上昇による磁化変化の増加も含まれることが明らかになった.また,以前のアクチュエータで問題となっていたSi微細はりとGaAs-Fe/GaAs薄膜との接着構造を廃し,GaAs-Fe/GaAs薄膜からバルクマイクロマシニングによるアクチュエータの試作に取り組んだ.その結果,長さ10mm,幅2mm,厚さ30μmの片持はり型アクチュエータの試作に成功した.
    次に光・磁気駆動型マイクロアクチュエータの,光誘起磁化に起因する変形,レーザー加熱による熱変形と熱磁化による変形を分離評価する手法を提案し,試作アクチュエータに適用した.その結果,レーザーパワー増加に伴う光誘起磁化に起因する変位の増加,光誘起磁化による応答の高速化を観測した.レーザーパワー8mWにおいて,アクチュエータ変位0.93μmの中で光誘起磁化に起因する変位は0.08μmであり,変位全体における寄与率は8.2%であることを明らかにした.
    また,光・磁気駆動型マイクロアクチュエータにおける変位発生メカニズムの解明のために,アクチュエータ駆動用レーザーの円偏光の影響を検討した.その結果,左円偏光の方が右円偏光より磁化変化が大きいことを発見した.また,光・磁気駆動型マイクロアクチュエータにおけるバイアス磁界の印加磁場方向の影響を検討した結果,磁束がGaAs-Fe面からGaAs面へ通過する方向の方が逆の方向より磁化変化が大きいことも発見した.

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  • 等価力実験法:動電型アクチュエータの特長を活かした新しい地震応答試験法の提案

    Grant number：15656128  2003

    日本学術振興会  科学研究費助成事業  萌芽研究

    笠井 和彦, 大木 洋司, 進士 忠彦

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    Grant amount：\3500000 （ Direct Cost: \3500000 ）

    本研究は、等価力実験法において油圧型アクチュエータの代わりに、動電型アクチュエータを用いるという新しい手法の提案・検証を目的とする。この最大の理由は、その時点でのアクチュエータ速度・変位に関わりなく、発生力がコイル電流と一対一対応し、かつ電流は非常に正確に発生できるため、等価力実験法にとって動電型が最適と思われるからである。つまり、油圧型アクチュエータに要した力・速度のフィードバックとコントロールが、動電型では不必要と考える。
    等価力実験法と振動台実験法の検証を、それぞれ小型アクチュエータと小型振動台を用いて行った。用いた試験体は建物3層モデルであり、等価力実験では各層に1台ずつ動電型アクチュエータを接続し、一方振動台実験では台を動かす動電型アクチュエータを用いた。この実験により、多質点系の実台実速度実験の予備的な検証を行うのが目的である。振動台実験においては、機器の限られた性能により、台の加速度が目標と合致するものではなかった。この実際に得た加速度と質量の積つまり力の時刻歴を、各動電型アクチュエータを固定して再現することはできた。
    しかし、試験体が動く等価力実験では、変位ストロークを生じるアクチュエータの力の時刻歴は、目標どおりに再現することは難しかった。以上、この萌芽的研究から一応の実験経験と知見を得ることができたが、目的を達成するためさらなる検討を行っている。今後は、動電型アクチュエータのメーカーと共同で展開研究を行う。

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  • 動圧・磁気併用マイクロ軸受の研究

    Grant number：14702025  2002 - 2004

    日本学術振興会  科学研究費助成事業  若手研究(A)

    進士 忠彦

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    Grant amount：\26390000 （ Direct Cost: \20300000 、 Indirect Cost：\6090000 ）

    本研究の目的は,動圧軸受の回転開始・停止時の低速回転域におけるラジアル剛性不足を補い,軸の接触問題を回避することにある.具体的には,低速回転時の補助用軸受として,磁気軸受を用いた動圧・磁気併用型マイクロ軸受の実現を目指している.但し,従来の磁気軸受では,軸の姿勢制御に多数の電磁石・センサが必要なため,情報機器などの小型化に向かず,コスト的にも高価である.このため,本研究では,マイクロ磁気軸受の実現と,動圧軸受とのハイブリッド化を目的とし研究を進めている.昨年度までの研究では,マイクロ磁気軸受の高剛性,高精度化,さらに,最大軸径φ2mmの小型化を達成した.しかしながら,フィードバック制御用変位センサの寸法が軸受自体より大きい問題があった,このため,本年度は,上記の問題を解決する手段として,マイクロ磁気軸受用のセンサレス変位計測方法を検討した.当初,磁気軸受内の磁場変動から変位の推定を試みたが,磁気飽和の影響から磁気軸受の安定化に十分な高精度変位計測が実現できなかった.このため,マイクロ磁気軸受の電磁石コアを電極として,ロータと電極間の静電容量変化を計測することで,変位を推定する手法を開発した.その結果,1kHzバンド幅と2μm程度の分解能の変位推定を実現し,その推定変位を用いた安定したマイクロ磁気軸受の制御を実現した.また,マイクロ磁気軸受内部に,小型誘導電動機を組み込み,軸の回転にも成功した.この結果,φ6mmのマイクロ磁気軸受では,センサレス浮上,マイクロ誘導電動機の組み込みにより,10,000pm以上の回転数での非接触回転を実現した.

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  • Comprehensive Basic Research for Development of Advanced, Innovative Permanent Artificial Heart Systems

    Grant number：14208103  2002 - 2004

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    TAKATANI Setsuo, SAKAMOTO Tohru, ARAI Hirokuni, SHINSHI Tadahiko, SHIMOKOHBE Akira, IWASAKI Yasuhiko

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    Grant amount：\52520000 （ Direct Cost: \40400000 、 Indirect Cost：\12120000 ）

    In this research, basic research covering following items was conducted ;
    1.In the pulsatile artificial heart that is based on the electromechanical principle, the durability of the roller screw mechanism was improved by coating the friction surface with a diamond-like-carbon coating. The ventricular assist device continued to operate for duration of 13 months in the 37 degree C bath. The failure in the ball bearing that supports the roller screw movement caused termination of the study.
    2.Magnetic levitation (MagLev) mechanism was investigated to achieve a mechanical contact-free centrifugal blood pump. A two-degree-freedom MagLev system was developed to attain a disposable extracorporeal blood pump and an implantable system. The power requirement in the MagLev system was reduced to less than 1.0watt with controllability being less than 20 micron meter. The hemolytic performance of the MagLev centrifugal blood pump was improved by a factor of 6-7 in comparison to the clinical standard BPX-80.
    3.The computational fluid dynamics (CFD) analysis was conducted to evaluate the mechanical design of the MagLev centrifugal blood pump designed in section 2. Flow visualization was also carried out to verify the numerical predictions to optimize the pump design.
    4.Basic research was also extended to evaluate the deformation and recovery response of red blood cells under cyclically reversing shear flow. A specially built shear flow generator was used to simulate a condition similar to that inside the centrifugal blood pumps. The results of the study can be used to improve the blood pump design.
    5.The optical reflectance sensor utilizing the fiber-optics was developed to detect thrombus formation inside the cardiovascular devices. Its application in oxygenators and blood pumps will be investigated.
    6.A surgical navigation system was developed to assist implantation of the artificial heart system. The CT images and CAD data of the device were used to construct the proper implantation scheme of the device in patients prior to surgery. The prototype was tested in calf for VAD implantation.

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  • 薄膜ガラス材料を用いたOpt-MEMS

    Grant number：14655101  2002

    日本学術振興会  科学研究費助成事業  萌芽研究

    下河辺 明, 秦 誠一, 進士 忠彦

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    Grant amount：\3400000 （ Direct Cost: \3400000 ）

    本研究では,組立工程を必要としないOpt-MEMSプロセスの実現性を検討することを目的に,新しい加工法の提案とその製作を行った.まず,以下に示すマイクロブロー成型法を提案した.
    1 MEMSプロセスにより,中空部を有する微細構造を薄膜金属ガラス材料で製作し,その中空部内にガスを封入する.
    2 上記微細中空構造を,赤外線真空加熱炉を用いて加熱することで,封入したガス膨張と薄膜金属ガラスの軟化によりマイクロブロー成型を行い,冷却することで,マイクロミラー形状の成形を行う.
    上記マイクロブロー成型法を用い,基礎的な検討として半球状の微細中空構造を製作し,以下のような結果を得た.
    1 マイクロブロー成型法のプロセスを考案し,改良することで,薄膜金属ガラス部の直径100μm,変形前の膜厚0.5μm,密閉圧力1Pa,加熱温度652Kの条件で,変形量48.7μm(変形率97.3%)の半球状の微細中空構造の製作に成功した.
    2 微細中空構造の製作を行うことで,直径と変形量の関係,厚さと変形量,温度と変形量の関係を明らかにした.また,理論的な検討を行い,実験結果と比較した結果,半球状の微細中空構造を得るためには,金属ガラス部の直径,厚さ,封入ガス容積,密封圧力,温度の最適な条件があることが明らかとなった.
    3 温度と変形量の関係より,温度を高めて行った場合,変形量が652K以上において変形量の増加が止まることについて検討した.その結果,結晶化による変形の停止が原因であることを明らかにした.
    本成型法により製作した半球状の微細中空構造は,マイクロミラーアレイ等のOpt-MEMSへの適用が期待される.今後は,この半球状の微細中空構造に酸化物ガラスを成膜や,高分子材料を充填することで,マイクロレンズを製作するプロセスを検討する.

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  • Research of sub-nano motion mechanism

    Grant number：13450054  2001 - 2002

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    SHIMOKOHBE Akira, SHINSHI Tadahiko, SATO Kaiji

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    Grant amount：\14700000 （ Direct Cost: \14700000 ）

    The aim of the research is to realize high-speed and multi-degree-of-freedom mechanisms having sub-nano-meter-order resolution and accuracy in the space more than 100mm cubic. Three fundamental researches had been done as follows.
    1. Research of sub-nano motion control : PID or GA controllers for a linear positioning mechanism, which is suspended by air bearings and driven by an air lead screw, were examined to realize nanometer positioning. Moreover, the design of nominal characteristics trajectory following controller for a two-mass positioning mechanism was proposed and tested.
    2. Research of sub-nano motion actuator : A micro-actuator using light-enhanced magnetization was proposed. The implementation of the proposed actuator principle was verified using a micro-actuator consisting of a silicon cantilever and a GaAsFe/GaAs chip.
    3. Resarch of sub-nano motion bearing : Based on a planar rotor with a radial magnetic bearing, we proposed simple methods for removal of the vibration caused by rotor imbalance and disturbance force from the induction motor.

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  • 1自由度制御型リニア磁気浮上駆動機構の研究

    Grant number：12750110  2000 - 2001

    日本学術振興会  科学研究費助成事業  奨励研究(A)

    進士 忠彦

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    Grant amount：\2400000 （ Direct Cost: \2400000 ）

    クリーンルームや真空中で使用可能な非接触機構として,磁気浮上システムが検討されてきた.既存の磁気浮上システムは,電磁石や永久磁石により,非接触浮上が実現されているが,必ず複数の不安定自由度を有するためフィードバック制御が不可欠であった.本研究では,テーブルの剛体6自由度運動のうち,最小の1自由度のみを制御することで,完全非接触浮上が可能な,永久磁石反発型磁気浮上システムの実現を目的とする.
    本研究で提案するシステムは,テーブル固定側に反発力を発生させる4組の永久磁石を配置する構造とし,数値シミュレーションにより,移動方向を除く5自由度が安定となる永久磁石の配置条件を明らかにした.これを元に,テーブル部は,非磁性のステンレス,永久磁石にネオジム磁石を用いた移動テーブルを試作した.移動テーブル安定化のためには,永久磁石を移動部,コイルを固定部に配置したムービングマグネットタイプの1自由度DCリニアモータを,上記のテーブルシステムに内蔵し,フィードバックセンサとして,渦電流型変位計,コントローラとしてPIDコントローラを用いた1自由度のフィードバックシステムを構成した.試作したテーブルの質量は,15.3kg,外形寸法250×370×87mm,浮上量8.5mmである.
    実験結果から,リニアモータを用いた1自由度制御により,テーブルの安定化が実現可能で,位置決め範囲±1.05mmを実現した.また,試作装置の剛性は,並進方向5300N/m,垂直方向9100N/m,ローリング42Nm/rad,ピッチング160Nm/rad,ヨーイング33Nm/radであった.

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  • Precision Magnetic Bearing with Nanometer Rotational Accuracy

    Grant number：11555049  1999 - 2000

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B).

    SHINSHI Tadahiko, HATA Seiichi, SATO Kaiji, SHIMOKOHBE Akira, KATAGIRI Sohichi

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    Grant amount：\6800000 （ Direct Cost: \6800000 ）

    The aim of the research is to realize a radial magnetic bearing with the rotational accuracy of several nanometers. In this research, a partial bias current method for driving electromagnets is introduced not only to achieve the high rotational accuracy of the spindle, but also to reduce the heat generation of the electromagnets. Furthermore, an angle domain repetitive controller is applied to eliminate the repeatable runouts caused by the unbalance of the spindle. The experimental results show that the partial bias current method has the merits of fine positioning capability, low heat generation of electromagnets and low rotational resistance. The repetitive controller can cancel the unbalance force and achieve the rotational accuracy of 15.1nm at 1500min^<-1>.

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  • Dynamics and Control of Nano-Motion Mechanisms

    Grant number：10305013  1998 - 2000

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A).

    SHIMOKOHBE Akira, HATA Seiichi, SHINSHI Tadahiko, SATO Kaiji

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    Grant amount：\37800000 （ Direct Cost: \37800000 ）

    The aim of this research is to realize motion mechanisms with not only nanometer positioning resolution but also millimeter positioning range. This research project consists of three subjects : (1) Dynamics of Nano-motion Mechanisms, (2) Control of Redundant Mechanism, and (3) Precision and Non-contact Magnetic Actuators.
    (1) Dynamics of Nano-motion Mechanisms Dynamic characteristics of a harmonic speed reducer for precision robots and an air bearing lead screw mechanism for steppers are experimentally examined within several moving ranges from sub-micrometer to millimeter orders. Both the mechanisms show macro-dynamics and microdynamics depending on the moving ranges.
    (2) Control of Redundant Mechanism The most suitable controller for redundant two-stage positioning system is theoretically and experimentally examined. The two-stage positioning system includes a ball lead screw and a DC motor as a coarse motion mechanism, and a PZT actuator and an elastic hinge mechanism as a fine motion mechanism. PID, optimal state feed back, H_<inf>, sliding mode, fuzzy and neural controller are applied to the system. Effect of step height, the table mass and constant load changes on the positioning performances are evaluated. The fuzzy and neural controllers show the best robustness in the seven controllers.
    (3) Precision and Non-contact Magnetic Actuators Positioning accuracies of sensorless control system using electromagnetic actuators are examined. Two types of displacement estimators using an observer or a magnetic flux sensor are tested. The displacement resolutions of the estimators are 0.1 - 0.15 μm.

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  • ギャップ磁束による磁気軸受のセンサレス制御

    Grant number：09750160  1997 - 1998

    日本学術振興会  科学研究費助成事業  奨励研究(A)

    進士 忠彦

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    Grant amount：\2400000 （ Direct Cost: \2400000 ）

    電磁石のギャップ磁束密度と電流を用いて変位を推定し,それをフィードバック信号とした1自由度非接触位置決め機構の精度の検討を行った.以下に結論を示す.
    (1) 電磁石の先端にホール素子を取り付けた1自由度制御型の位置決め機構を試作した.
    (2) 上記機構にて,高精度センサを用いた位置決め制御時に得られる磁束密度と電流値からリアルタイムで変位を推定し,高精度変位センサから得られる変位と比較した.その結果,推定変位分解能80nm,直線範囲±0.15mm以上,周波数応答特性の誤差は,0〜100Hzの範囲で,ゲインで3dB,位相で50°以内であった.
    (3) 推定分解能は,磁束計測時に電気回路に混入する電源ノイズ(50Hzノイズ),また,推定変位の100Hz以上の周波数帯域に見られるゲイン・位相の推定誤差は,電流センサと磁束密度センサの周波数応答特性の違いに依存していることを確認した.
    (4) 推定変位をフィードバック信号として位置決め制御を行い,位置決め分解能100nm,0.1mmのステップ応答の実現,温度変化に対する浮上安定性3.0mm/℃を確認した.
    今回の実験で検証された変位推定精度ならびに位置決め精度は,高精度静電容量型変位計を用いる場合と比較して不十分である.更なる位置決め精度向上のためには,磁束密度の高精度計測方法の検討,100Hz近傍の周波数領域から見られる推定変位誤差の修正方法の検討が必要である.

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  • Prototyping for High Stiffness Magnetic Lead Screw

    Grant number：09555053  1997 - 1998

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    SHIMOKOUHBE Akira, HASHIMOTO Jyunnichi, SHINSHI Tadahiko, SATO Kaiji

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    Grant amount：\13600000 （ Direct Cost: \13600000 ）

    This paper proposes a magnetic lead screw mechanism which is comprised of a conventional steel lead screw and a magnetic nut. The nut is made from a helically-magnetized cylindrical permanent magnet and an external steel cover. A driving force from the screw to the nut is transmitted through the magnetic coupling without mechanical contact. So the magnetic lead screw can be used in vacuum, does not make noise and vibration, and is free from lubrication problem. However, the axial stiffness and maximum carrying load of the magnetic lead screws are smaller than those of ordinary lead screws such as ball lead screws and air lead screws. In this paper, first, some experimental magnetic lead screws are made and it is proved that experimental results of the carrying load and stiffness in the axial direction agree well with simulated ones using the FEM models. It is also clarified that the thread depth and flat width of lead screw affect the carrying force of the mechanism. Secondary, a positioning mechanism using a MLS, a linear ball guide to support a table, and a DC motor is introduced. Then the start-up characteristics are clarified by simulation using a dynamic model which is identified by experimental data. Finally the table of the mechanism is positioned with using a laser measurement system as a feedback sensor. The results show that the MLS can drive a 4.5 kg table with maximum 3.4 Nm torque without out-of-step, and that the positioning accuracy using PI-D controller with a square root element is about l0nm.

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  • Trial Study of Ultra-Precision Magnetic Bearing

    Grant number：07555051  1995 - 1996

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    SHIMOKOHBE Akira, MORIYAMA Shigeo, SHINSHI Tadahiko, SATO Kaiji, TANG Donglei

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    Grant amount：\15800000 （ Direct Cost: \15800000 ）

    Magnetic bearings are not accurate enough for precision equipment. In this study, first, a two-degree-of-freedom magnetic bearing with an optimal state feedback controller is introduced Eddy current displacement sensors and capacitance micrometer are used as feedback sensors. The positioning accuracy is 15nm when the axis does not rotate. Then, to improve the rotational accuracy, a repetitive controller is added to the bearing. The rotational error with the optimal and repetitive controllers is 250nm at 120rpm which is caused by the profile error of the axis and by the arrangement of the sensors and electromagnets.

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