Search Results 1-20 of 802

  • dSPACE based Hardware in the loop Testing Platform for Powertrain Management Unit of Electric Tractor

    WU Zhongbin , XIE Bin , LI Zhen , MITSUOKA Muneshi , 井上 英二 , HIRAI Yasumaru

    … The PMU was specially designed to manage the tractor operating state refresh and calculate the target torque required in the driving state. … HIL simulations of the tractor operating state refresh and driving torque calculation under full–throttle acceleration were carried out. … In the acceleration test, the PMU accurately provided the torque demand in response to the driving intentions. …

    九州大学大学院農学研究院紀要 64(2), 309-317, 2019-09-02


  • Development and Application of Low-friction, Compact Size Actuator "MagLinkage"  [in Japanese]

    Koyama Keisuke , Shimojo Makoto , Senoo Taku , Ishikawa Masatoshi

    … In this paper, we describe specifics, dynamic response, friction/cogging torque model and catching a light weight object with shock absorption control.</p> …

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2019(0), 2P1-H02, 2019


  • Development of high-performance rotary wings inspired by morphology and structure of animals  [in Japanese]

    ISHIBASHI Kenta , HIROSE Masaki , NODA Ryusuke , NAKATA Toshiyuki , LIU Hao

    … Gust response of propellers are measured experimentally using 6-axis loadcell. … Through the experiments, it is found that the insect-inspired flexible propeller can suppress the unstable torque under gust by the passive wing deformation.</p> …

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2019(0), 2A2-D05, 2019


  • A variable stiffness mechanism with a cord-like structure using comb joints.  [in Japanese]

    MUKAIDE Rio , Fujimoto Toshiaki , WATANABE Masahiro , TADAKUMA Kenjiro , KONYO Masashi , TADOKORO Satoshi

    … To provide effective support for disaster response, grippers that can firmly grasp complex shape objects are required. … First, the structure of the comb joint and the basic principle is presented.</p><p>Next, the holding torque was analyzed based on Newton's law. …

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2019(0), 1P1-G07, 2019


  • Evaluation of the relationship between joint torque and angular velocity using a modified leg extension machine

    RPT PhD Kanada Yoshikiyo , RPT PhD Sakurai Hiroaki , RPT PhD Sugiura Yoshito , RPT MS Arai Tomoaki , RPT PhD Koyama Soichiro , RPT PhD Tanabe Shigeo

    … When performing knee extension using a leg extension machine, the lower limb is pushed back in the direction in which knee flexion occurs in response to the freefall of the weight after maximal knee extension. … Therefore, eccentric contractions of the knee extensors are needed, which may lead to cumulative fatigue of the extensors, consequently reducing the reliability of the knee extensor torque values. …

    Fujita Medical Journal 5(4), 85-91, 2019

    IR  J-STAGE 

  • Quick Reaction Force Control for Three-Inertia Resonant System

    Yabuki Akinori , Ohishi Kiyoshi , Miyazaki Toshimasa , Yokokura Yuki

    … The load-side dynamic characteristics are measured via input impact torque using a hammer and motor-side velocity response. … The experimental results of the input impact torque using a hammer confirm a new anti-resonance frequency with regard to the load-side dynamic characteristics. …

    IEEJ Journal of Industry Applications 8(6), 941-952, 2019


  • Simple Position Sensorless Speed Control Method for Permanent Magnet Synchronous Motors Using Flux Vector Control  [in Japanese]

    Yoshimoto Junki , Matsuyama Tetsuya

    … The proposed method is simpler than direct torque control and does not require speed and torque controller. … Speed control can be realized by applying a synchronous drive instead of a speed controller, which is not affected by speed estimation and torque estimation accuracy. … In addition, stabilization control is realized by feeding back torque pulsation because only the synchronous drive becomes oscillatory. …

    IEEJ Transactions on Industry Applications 139(9), 784-790, 2019


  • Fundamental Study on the Effects of Connector Torque Value on the Change of Inductance at the Contact Boundary

    FUJIMOTO Daisuke , NARIMATSU Takashi , HAYASHI Yu-ichi

    … <p>Under the condition of inadequate torque management, contact failure could occur in the interconnecting connector. … However, there is not enough discussion about the effects of connector torque fluctuation on the surrounding electromagnetic environment. … Thus, in this study, the effects of a changing connector torque value on the circuit response and near field at the contact boundary were investigated. …

    IEICE Transactions on Electronics E102.C(9), 636-640, 2019


  • The Influence of an Undersized Drilling Osteotomy for Implant Placement on Osseointegration and Surrounding Bone  [in Japanese]

    JINNO Yohei , STOCCHERO Michele , TOIA Marco , BECKTOR Jonas P.

    <p>インプラント治療は,口腔内欠損補綴治療になくてはならない治療オプションの一つである.初期固定はオッセオインテグレーション獲得の必要条件であり,即時負荷・早期負荷が一般的な術式になるに従い,より安定した初期固定が要求されるようになってきた.高い初期固定値獲得のため,インプラント体のマクロ・マイクロレベルのデザインの変更,新しい術式など多くの工夫が紹介されてきた.アンダーサイズドリリ …

    Journal of Japanese Society of Oral Implantology 32(2), 116-125, 2019

    J-STAGE  Ichushi Web 

  • Major patterns of plantar flexion resistive torque during the gait cycle in healthy young adults wearing ankle foot orthoses with a plantar flexion stop: a pilot study

    Fujimoto Mikio , Suzuki Shota , Kuki Hirotaka , Masuda Minori , Takei Keiichi , Yamamoto Mitsuru

    … <p>[Purpose] The Gait Judge System measures the plantar flexion resistive torque acting on the angle of the ankle joint, as well as the ankle joint itself, of the ankle-foot orthosis using a 1,000 Hz sampling frequency. … This pilot study aimed to determine the characteristics of plantar flexion resistive torque acting on the double Klenzak ankle joint of the ankle-foot orthoses worn by healthy individuals. …

    Journal of Physical Therapy Science 31(7), 504-507, 2019


  • Reshaping the Response Characteristic of Industrial Robot Using External PC Controller  [in Japanese]

    Kihara Yasuyuki , Hayashi Koichiro , Fujihira Yoshinori , Ueno Hikaru , Murakami Hiroki , Yoshikawa Tsuneo , Nagai Kiyoshi

    … <p>Since automation of tasks with wide variance of position and shape such as bin-picking, finishing and assembling are demanded, more and more robots are becoming adaptive with force-torque sensor and vision sensors. … To solve this problem, we propose a new method to reshape the response characteristic of industrial robot using external controller for reducing the tuning control parameters. …

    Journal of the Robotics Society of Japan 37(5), 419-426, 2019


  • Smooth Human Interaction Control using Torsion Torque Controller and Motor-side Normalization Compensator Focusing on Back-forward Drivability

    Kawai Yusuke , Yokokura Yuki , Ohishi Kiyoshi , Miyazaki Toshimasa

    … The proposed control system combines torsion torque control (TTC) and a motor-side normalization compensator (MNC) to facilitate human-robot interactions. … The effectiveness of the proposed control system is verified based on numerical simulation and experimental results, and the vibration of the back-forward drivable response is drastically suppressed.</p> …

    IEEJ Journal of Industry Applications 8(2), 322-333, 2019


  • Combination Method of Model Predictive Direct Torque Control and Optimized PWM Pattern for Fast Torque Response and Reduced Harmonic Current  [in Japanese]

    樋渡 天次郎 , 大石 潔 , 横倉 勇希 , 佐野 壮太 , 佐竹 彰

    電気学会研究会資料. MD 2018(53・55-64), 7-12, 2018-03-01

  • Combination Method of Model Predictive Direct Torque Control and Optimized PWM Pattern for Fast Torque Response and Reduced Harmonic Current  [in Japanese]

    樋渡 天次郎 , 大石 潔 , 横倉 勇希 , 佐野 壮太 , 佐竹 彰

    電気学会研究会資料. HCA 2018(2・4-13), 7-12, 2018-03-01

  • Examination of High-Torque Sandwich-Type Spherical Ultrasonic Motor Using with High-Power Multimode Annular Vibrating Stator

    MIZUNO Ai , OIKAWA Koki , AOYAGI Manabu , KAJIWARA Hidekazu , TAMURA Hideki , TAKANO Takehiro

    … Spherical ultrasonic motors (SUSMs) that can operate with multiple degrees of freedom (MDOF) using only a single stator have high holding torque and high torque at low speed, which makes reduction gearing unnecessary. … The simple structure of MDOF-SUSMs makes them useful as compact actuators, but their development is still insufficient for applications such as joints of humanoid robots and other systems that require MDOF and high torque. …

    Actuators 7(1), 8-24, 2018-02-27


  • Mesh Condition Monitoring for Low-speed Rotating Gears by a Piezoelectric Element Attached on the End Face  [in Japanese]

    NONAKA Shota , MASUDA Arata , MATSUMURA Takaki

    … It is, however, hard to apply these approaches to the condition monitoring of low-speed gears because they are based on the detection of the impulsive response of the gear induced by a damaged tooth. …

    The Proceedings of the Symposium on Evaluation and Diagnosis 2018.17(0), 106, 2018


  • Motor learning of arm reaching movement in redundant musculoskeletal system  [in Japanese]

    HAGIO Shota , NOZAKI Daichi

    … Then, how is the learning response at a limb endpoint distributed among different joints? … Learning response of hand force was quantified as the force pushing a randomly-interleaved virtual force channel, in which the movement trajectory of the handle was constrained to a straight path from the start position to the target. … Interestingly, the learning to the torque after the training trials was faster in the distal joint than in the proximal joints. …

    The Proceedings of the Symposium on sports and human dynamics 2018(0), A-26, 2018


  • SKYACTIV Vehicle Dynamics: integration control with re-constructing Vehicle CAN-bus network  [in Japanese]

    Umetsu Daisuke

    … <p>The G-Vectoring Control (GVC) system using engine torque control has been developed for mass production. … As the concept of G-Vectoring is well known through several researches, G-Vectoring system generates slight deceleration in response to lateral jerk to improve vehicle dynamics. …

    The Proceedings of Mechanical Engineering Congress, Japan 2018(0), F012002, 2018


  • Dynamic Preload Control for Rotary Ultrasonic Motors

    Mustafa Abdullah , Morita Takeshi

    … <p>In typical rotary traveling-wave Ultrasonic motors, the preload force between the stator and the rotor is optimized to achieve the best compromise between output torque and speed to suit different applications. … Due to this force, a high stationary torque is generated which is not suitable for many applications. … Actively-controlling the preload enables free movement with a relatively low preload while allowing for higher output torque under fairly high preload. …

    Proceedings of JSPE Semestrial Meeting 2018A(0), 504-505, 2018


  • High Torque and Variable Compliance 3-DoF Wrist Mechanism by Hydraulic Artificial Muscles  [in Japanese]

    MORITA Ryusuke , NABAE Hiroyuki , ENDO Gen , SUZUMORI Koichi

    … These characteristics are suitable for the actuators of the disaster response robots. …

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2018(0), 2P1-L02, 2018


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