Search Results 1-20 of 16306

  • Engine Torque Simulated Vibration Control for Drive Train Bench System Using Generalized Periodic Disturbance Observer  [in Japanese]

    只野 裕吾 , 山口 崇 , 秋山 岳夫 , 野村 昌克

    電気学会論文誌. D, 産業応用部門誌 = IEEJ transactions on industry applications 140(1), 45-55, 2020-01

  • Vibration control of mulch modes of inverter motor stator using imperfect mass and Houde dampers  [in Japanese]

    吉武 裕 , 南 克樹 , 茅原 晃希 , 片原田 浩之 , 山崎 豪

    … This paper deals with the quenching problem of electromagnetic vibration of the motor stator in the wide frequency region around two natural frequencies. … To quench its vibration, single mass is set on the stator, and two Houde dampers are installed on the outside of it. …

    長崎大学大学院工学研究科研究報告 50(94), 42-46, 2020-01

    IR 

  • Vibration control design of motor stator using dynamic absorbers, imperfect mass and elastic supports  [in Japanese]

    吉武 裕 , 南 克樹 , 片原田 浩之 , 山崎 豪

    … This paper deals with the quenching problem of electromagnetic vibration of the motor stator in the wide frequency region around the natural frequency. … To quench its vibration, single mass is set on the stator, it is supported by the two springs, and a pair of dynamic absorbers is installed on the outside of it. … The solutions of forced vibration are obtained by the theoretical analysis. …

    長崎大学大学院工学研究科研究報告 50(94), 36-41, 2020-01

    IR 

  • Vibration control device using rotation of liquid  [in Japanese]

    吉武 裕 , 稲垣 和成 , 安部 晃 , 梶原 修平

    … The authors have been researching vibration control devices using Hula-Hoops. … In this study, from the viewpoints of energy saving and cost of the device, the vibration control devices using the rotation phenomenon of liquid instead of Hula-Hoops is investigated. … (4) When the fluid is 100% alcohol, the rotational resistance is small and the vibration control effect is large. …

    長崎大学大学院工学研究科研究報告 50(94), 31-35, 2020-01

    IR 

  • Vibration control experiment of mechanical structure subjected to forced displacement using Hula-Hoop and assist motor  [in Japanese]

    吉武 裕 , 稲垣 和成 , 安部 晃 , 村上 心 , 梶原 修平

    … The authors have been studying vibration control devices using Hula-Hoops. … In this research, as a pre-stage of practical application of a vibration control device using a Hula-Hoop, vibration control of a larger main system than the conventional one is attempted by experiments and numerical calculations. …

    長崎大学大学院工学研究科研究報告 50(94), 25-30, 2020-01

    IR 

  • Nonlinear phenomena in vibration control devices using Hula-Hoop and displacement magnification mechanism  [in Japanese]

    吉武 裕 , 稲垣 和成

    … The authors have been studying vibration control devices using Hula-Hoops. … A displacement magnification mechanism has been devised so that vibration can be controlled even when the vibration amplitude of the main system to be controlled is small, and its effect is investigated. … The purpose of this study is to clarify the vibration behavior in the system to be controlled by the Hula-Hoop and the displacement magnification mechanism. …

    長崎大学大学院工学研究科研究報告 50(94), 17-24, 2020-01

    IR 

  • Vibration quenching device using Hula-Hoop and displacement magnification mechanism composed by pate spring and rigid column  [in Japanese]

    吉武 裕 , 稲垣 和成 , 坂本 竜二郎 , 古川 隼人 , 梶原 修平

    … This paper deals with the vibration quenching problem of the single-degree-of-freedom system with a limited power supply. … The vibration quenching of the system are studied from the numerical integration of the equation of motion obtained using Lagrange equation and the experiment. …

    長崎大学大学院工学研究科研究報告 50(94), 9-16, 2020-01

    IR 

  • One Step Forward in Cylinder Pressure Measurement

    Jussila Miika , Giger Martin , Stadler Jürg , Kober Martin

    … <p>Closed loop combustion control (CLCC) has established itself in a new generation of large engines such that the capability of using of different fuels, with very high engine efficiency, is now possible. … Mounting location of the pressure sensor can affect the sensor service life due to environmental factors e.g. temperature and vibration. …

    Marine Engineering 55(1), 91-99, 2020

    J-STAGE 

  • Study on vibration control system of structures based on magnetic levitation technology

    JIANG Changan , UENO Satoshi

    … <p>This study expresses a novel active vibration control method for structures by using magnetic levitation (MA-GLEV) technologies. … When a vibration occurs, a developed MAGLEV device will repeat to levitate and contact to the ceiling of structures properly. … According to this movement, frictional force will be generated to consume vibration energy by the friction mechanism of the MAGLEV device. …

    Mechanical Engineering Journal, 2020

    J-STAGE 

  • Estimation of parameters affecting ride comfort in elevator  [in Japanese]

    KAMIJO Yoshitake , IWATA Yoshiyuki , TAKADA Hajime

    Vibration and noise during elevator travel propagate into the car, which induces a feeling of ear blockage and car shaking. … In order to evaluate the ride comfort of the elevator, an elevator that can change the rated speed and control acceleration when going up and down is used. …

    Transactions of the JSME (in Japanese) 86(881), 19-00407-19-00407, 2020

    J-STAGE 

  • Hysteresis controlled MPPT for piezoelectric energy harvesting

    Wen Fengjie , Ren Kai , Lin Yujie , Ye Yidie , Xia Huakang , Xia Yinshui , Shi Ge

    … Experimental results show that the MPPT control method with the hysteresis window can effectively track the optimal output voltage. … is high to 98.7% with the variety of the ambient vibration energy.</p> …

    IEICE Electronics Express 17(2), 20190722-20190722, 2020

    J-STAGE 

  • Resonance frequency control using the rank-one perturbation of the self-compliance matrix at interface degrees of freedom  [in Japanese]

    MATSUMURA Yuichi , KOMADA Masashi , MATSUBARA Masami , KIDO Ichiro

    … <p>A design method of a strongly coupled vibration system is required for improving noise and vibration performance of machinery. … compliance matrix, gives the insight to work out satisfactory countermeasures for resonance frequency control of a strongly coupled vibration system. …

    Transactions of the JSME (in Japanese) 86(881), 19-00163-19-00163, 2020

    J-STAGE 

  • Design of Extended Kalman Filter for Discontinuous, Nonlinear Wiper System  [in Japanese]

    Haijima Takuji , Sano Shigenori , Kosugi Nobuhiko

    自動車用ワイパシステムの状態推定で,びびりの発生要因となるラバーとフロントガラス間の摩擦が不連続なため速度0[rad/s]付近で精度が悪化する.そこで,摩擦モデルの速度に依存しない静止摩擦項を外生入力としたことで,ヤコビアンの極大化が抑制され,拡張カルマンフィルタによる高精度な推定が可能となった.

    Transactions of Society of Automotive Engineers of Japan 51(1), 226-231, 2020

    J-STAGE 

  • Active vibration suppression of NC machine tools for high-speed contouring motions

    SATO Ryuta , HAYASHI Hideaki , SHIRASE Keiichi

    … <p>In this study, we describe a novel mechanical vibration suppression method for high-speed contouring motions. … In this method, vibration compensation torque was applied to suppress mechanical vibrations during high-speed contouring motions. … The parameters of the compensation signal were determined using commanded acceleration and time for acceleration and deceleration, which were set as numerical control (NC) parameters. …

    Journal of Advanced Mechanical Design, Systems, and Manufacturing 14(1), JAMDSM0005-JAMDSM0005, 2020

    J-STAGE 

  • Development of a Force Sensorless Percussion Device for Rationalization of Generator Inspection  [in Japanese]

    KUWAHARA Hiroaki , MIZOGUCHI Takahiro , SHIMONO Tomoyuki , OHNISHI Kouhei

    … Since echo vibration excited by striking the target is analyzed in this method,the device requires two functions: a striking function and a sensing function. … In this paper, a percussion device with the force control technique andthe inspection method to detect the stator wedge looseness are proposed. …

    Journal of the Japan Society for Precision Engineering 86(1), 120-125, 2020

    J-STAGE 

  • Equivalent Resonance Ratio Control in Two-Spring System for Stable Contact Motion in Industrial Robots

    Kawai Yusuke , Yokokura Yuki , Ohishi Kiyoshi , Miyazaki Toshimasa

    … This study focuses on the torque-velocity duality and a two-spring system is constructed using motor-side velocity control for a two-inertia system with environmental considerations. … An equivalent resonance ratio control (ERRC) is proposed to suppress the vibrations in a two-spring system. … This method achieves the same scheme as the resonance ratio control applied in position control. …

    IEEJ Journal of Industry Applications 9(1), 51-60, 2020

    J-STAGE 

  • Efficient Cavitation Generation by Non-sinusoidal Powerful Ultrasound  [in Japanese]

    YOKOZAWA Hiroki , MORITA Takeshi

    <p>強力超音波応用デバイスにおいては共振振動を利用するために,その振動波形は正弦波となるのが一般的である.その一方で,超音波ポンプや超音波浮上,キャビテーション生成においては,媒体の体積弾性率の非線形性を積極的に利用するために,必ずしも正弦波形の超音波振動が最適であるとは限らない.本研究では,超音波振動における高次モードが基本周波数の2倍になるような振動子を設計し,正弦波を二つ重ね合 …

    IEICE ESS Fundamentals Review 13(3), 209-216, 2020

    J-STAGE 

  • Engine Torque Simulated Vibration Control for Drive Train Bench System Using Generalized Periodic Disturbance Observer  [in Japanese]

    Tadano Yugo , Yamaguchi Takashi , Akiyama Takao , Nomura Masakatsu

    … The test system has to simulate the vibration torque of the engine by motor control. … Conventionally, a sine wave is used to simulate the vibration torque of an engine. … However, the actual vibration torque waveform contains harmonic distortion components inherent in the engine. … Therefore, it is desirable to have a vibration control technique capable of simulating the waveform of the engine torque more accurately. …

    IEEJ Transactions on Industry Applications 140(1), 45-55, 2020

    J-STAGE 

  • An Analysis of Improvement in Output Power of Vibration Generator with Circulating Current Control Circuit for Variable Frequency  [in Japanese]

    中垣 有希人 , 長谷 元気 , 南 政孝

    電気学会研究会資料. VT 2019(26-39), 65-70, 2019-12-06

  • An Analysis of Improvement in Output Power of Vibration Generator with Circulating Current Control Circuit for Variable Frequency  [in Japanese]

    中垣 有希人 , 長谷 元気 , 南 政孝

    電気学会研究会資料. HCA 2019(52-65), 65-70, 2019-12-06

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