Search Results 1-20 of 1657

  • Torque Control of a Series Elastic Actuator Using an Ultrasonic Motor with Angular-Velocity Saturation  [in Japanese]

    Nakamura Toshiya , Yashiro Daisuke , Yubai Kazuhiro , Komada Satoshi

    … <p>A series elastic actuator (SEA) using an ultrasonic motor (USM) and an elastic element has attracted attention as a compact actuator with high torque-weight ratio and high force control performance. … To suppress these vibrations, studies implemented the state feedback of the motor- and load-side angles. …

    IEEJ Transactions on Industry Applications 140(5), 378-386, 2020


  • Development of rotary-type noncontact-synchronous ultrasonic motor

    Hirano Taiki , Aoyagi Manabu , Kajiwara Hidekazu , Tamura Hideki , Takano Takehiro

    Japanese Journal of Applied Physics 58(SG), SGGD09-SGGD09, 2019-06-25


  • An ultrasonic motor using Langevin transducer and transmission line  [in Japanese]

    石井 孝明 , 清水 毅

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 119(45), 19-22, 2019-05-20

  • Torque control of ultrasonic motors for walking assist system  [in Japanese]

    Sasamura Tatsuki , Kaneko Takamitsu , Mustafa Abdullah , Hachisuka Satori , Morita Takeshi

    … An ultrasonic motor has many attractive features, i.e., high torque, lightweight and silent drive, which are important for wearable robots, including walking assist systems. … In this paper, a torque control method of an ultrasonic motor for walking assist system is studied. …

    The Proceedings of the Symposium on the Motion and Vibration Control 2019.16(0), C301, 2019


  • Development of Δ-type Self-propelled Robot Using Standing Wave Type Piezoelectric Ultrasonic Motor  [in Japanese]


    … <p>In this paper, we have introduced a new developed type of self-propelled robot which uses three standing wave type ultrasonic motors to realize holonomic movement on a surface. …

    The Proceedings of the Symposium on Micro-Nano Science and Technology 2019.10(0), 19am3PN315, 2019


  • Health monitoring system using chirp ultrasonic waves for mobility structures made of woven CFRP composites  [in Japanese]

    TAN Langxing , ZHANG Ge , YU Fengming , SAITO Osamu , OKABE Yoji , KONDOH Taku , TEZUKA Shota , CHIBA Akihiro

    … Hence, we construct an SHM system that transmits and receives ultrasonic guided waves over a broad bandwidth by inputting a chirp signal to a film-like piezoelectric element in this research. … We are trying to detect an impact damage that has occurred in woven CFRP laminates by measuring the delay in the propagation time of ultrasonic Lamb wave depending on frequency.</p> …

    The Proceedings of Mechanical Engineering Congress, Japan 2019(0), J40139P, 2019


  • (Bi,Na)TiO<sub>3</sub>-BaTiO<sub>3</sub>積層圧電素子を用いた弾性フィン型超音波モータ  [in Japanese]

    Miyake Susumu , Harada Tomohiro , Shimizu Hiroyuki , Kishimoto Sumiaki , Morita Takeshi

    <p>本研究では(Bi,Na)TiO<sub>3</sub>-BaTiO<sub>3</sub>[BNBT]積層圧電素子を用いた超音波モータの試作・評価を行った。BNBTはハイパワー特性に優れた非鉛圧電材料であるが、圧電定数が低いため、材料を積層化し、圧電変位を増加させると共に高電界駆動を行った。弾性フィンを用いて積層圧電素子の縦振動変位 …

    Proceedings of JSPE Semestrial Meeting 2019A(0), 330-331, 2019


  • マイクロ超音波モータの視覚フィードバック制御に関する研究  [in Japanese]

    Izuhara Shunsuke , Zhong Zhang , Mashimo Tomoaki

    <p>本研究では,大きさ約2mm立方のマイクロリニア超音波のビジュアルフィードバック制御を行った.モータが制御されていない場合,目標の変位と現在の変位との間に大きな誤差が生じる.一方,P制御を用いた場合,オーバーシュートなしで,スライダは正確に目標変位で停止する.また,P制御を用いて80msの間隔で目標変位を与えられたときのステップ応答はオーバーシュートなしで0.2mm間隔の動きの良い …

    Proceedings of JSPE Semestrial Meeting 2019A(0), 339-340, 2019


  • 超音波モータを用いた歩行アシストシステムの両足装着による足部クリアランス向上へ与える影響  [in Japanese]

    Kaneko Takamitsu , Orino Yuichiro , Morita Takeshi

    <p>小型で高トルクという特徴をもつ超音波モータの人間支援デバイス分野への応用が期待されている.本研究では,人の歩行機能を補助し転倒を予防する歩行アシストシステムへの適用を検討し,超音波モータの特徴を生かしたシステムを提案,試作した.また,システムを身に着けた被験者の歩行動作をモーションキャプチャにより測定し,転倒現象に関係のあるつま先の高さなどを解析し,様々なアシストを与えた際の変化 …

    Proceedings of JSPE Semestrial Meeting 2019A(0), 353-354, 2019


  • Flapping Micro Aerial Vehicle Using an Ultrasonic Motor  [in Japanese]

    Mihara Kenji , Mashimo Tomoaki

    <p>In DARPA's original program, Micro Aerial Vehicles (MAVs) are defined as a class of aircraft whose target dimensions are less than 150 mm in any one dimension. They represent a promising …

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2019(0), 2A2-S05, 2019


  • Development of Rotary-Wing MAV using Micro Ultrasonic Motor  [in Japanese]

    Chiang Eric Tan Kai , Mashimo Tomoaki

    … Thus, in this paper, we describe the trial production of micro ultrasonic motor and micro propeller for developing the smallest MAV in the world.</p> …

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2019(0), 1P2-A03, 2019


  • Development of Movement System Using Micro Gear Motor  [in Japanese]

    RUDOLF Yoga Hutama , MASHIMO Tomoaki

    … <p>We propose a micro mobile robot using the smallest set of micro ultrasonic motor and micro planetary gear. …

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2019(0), 1P1-K05, 2019


  • Analysis of deformation behavior of aluminum plate in ultrasonic bonding  [in Japanese]

    OIKAWA Shota , SASAKI Tomohiro , DOI Yuhei , KIM Taewon , ARIMOTO Keisuke

    The Proceedings of Conference of Hokuriku-Shinetsu Branch 2019.56(0), B022, 2019


  • Position Control of Ultrasonic Motor Based on Loop - Gain Adjustment by Adaptive Algorithm  [in Japanese]

    Komatsu Kazumi , Naganawa Akihiro

    … In the ultrasonic motors (USM), there are various driving principles such as a standing wave type, a traveling wave type, etc. …

    The Japanese Journal of the Institute of Industrial Applications Engineers 7(2), 39-46, 2019


  • Modeling of Preload Controllable Rotary Ultrasonic Motors


    … <p>Rotary ultrasonic motors (USM) are promising piezoelectric devices as a leading next-generation of actuators. … For commercialization purposes, the performance of the motor needs to be well-predicted at the design phase. …

    Proceedings of JSPE Semestrial Meeting 2019S(0), 750-751, 2019


  • 対向予圧付与可能な小型超音波リニアモータ(第二報):四脚構造による予圧制御力の拡大  [in Japanese]

    Tanoue Yutaro , Morita Takeshi

    <p>小型かつハイパワーなアクチュエータとして超音波リニアモータが注目を集めているが、義手等のパワーアシスト用途としてはその出力は未だ十分とはいえない。本研究では超音波モータの出力を決定する要素の一つである予圧に着目し、振動子の両側から効果的に予圧を与え駆動可能な小型超音波リニアモータを開発した。シミュレーションと実験により駆動原理を確認し、駆動電圧や周波数、予圧を変化させた際の駆動特 …

    Proceedings of JSPE Semestrial Meeting 2019S(0), 752-753, 2019


  • A polydimethylsiloxane-based axicon lens for focused ultrasonic brain stimulation techniques

    Acquaticci Fabin , Guarracino Juan F. , Gwirc Sergio N. , Lew Sergio E.

    … In this work, we built ultrasonic disc-shaped transducer for targeted neuromodulation with the addition of a solid axicon lens based on a polydimethylsiloxane (PDMS) interface. … The motor cortex of CF-1 mice was stimulated, through the skin and skull into the intact brain, with low-intensity pulsed ultrasound. … Axicon lens affixed on the face of the transducer makes possible a targeted modulation of the motor cortex by pulsed ultrasound, inducing muscle contraction in a specific body segment. …

    Acoustical Science and Technology 40(2), 116-126, 2019


  • Relationship between motor function and ultrasonic vocalizations induced by maternal separation in rat pups

    ISOBE Anna , KAWAGUCHI Maiko

    … <p>When rat pups are isolated from their mothers, they emit ultrasonic vocalizations (USVs). …

    Journal of Veterinary Medical Science 81(2), 287-293, 2019

    J-STAGE  Ichushi Web 

  • Physical fitness and motor ability associations with morphology, lower limb muscle thickness, and subcutaneous fat thickness in early childhood  [in Japanese]

    船津 京太郎

    … The purpose of this study was to examine children in first to third grades (aged 6 to 8 years) todetermine the associations of physical fitness and motor ability with morphology, lower limb musclethickness, and subcutaneous fat thickness in early childhood as well as grade and gender differencesin those relationships. …

    九州共立大学研究紀要 = Study journal of Kyushu Kyoritsu University 10(1), 55-66, 2019


  • Non-metal high-power ultrasonic motors utilizing Langevin-type alumina/PZT transducers operated in orthogonal bending modes (超音波)

    ウー ジャン , 水野 洋輔 , 中村 健太郎

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 118(353), 27-31, 2018-12-10

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