TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY最新文献_第2页

A Flexible Mechanical System Using a Hydrostatic Skeleton : Comparison of Driving Forces and Avoidance of Stress Concentrations Based on Nonlinear Finite Element Analysis 采用静水骨架的柔性机械系统:基于非线性有限元分析的驱动力比较与应力集中避免

TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY Pub Date : 2010-05-15 DOI: 10.5739/JFPS.41.43

D. Maruyama, H. Kimura, M. Koseki, N. Inou

{"title":"A Flexible Mechanical System Using a Hydrostatic Skeleton : Comparison of Driving Forces and Avoidance of Stress Concentrations Based on Nonlinear Finite Element Analysis","authors":"D. Maruyama, H. Kimura, M. Koseki, N. Inou","doi":"10.5739/JFPS.41.43","DOIUrl":"https://doi.org/10.5739/JFPS.41.43","url":null,"abstract":"The purpose of this study is to develop a design method of a fl exible mechanical system using a hydrostatic skeleton driving mechanism. The system consists of two types of fl exible bags in order to separate the roles into a structural part and an actuator part. One is a constant pressure bag as a structural part, and the other is a pressure tunable bag as an actuator part. There are remarkable advantages of using this system as listed below: i) Because of the fl exibility, the system can be applied safely to various kinds of workspaces where living beings and mechanical systems work together. ii) Because of using two types of bags, driving effi ciency of the system is higher than that of other fl exible systems using only one type of bag. The theoretical design method of the system is required to realize these advantages. In order to realize the design method, it is important to calculate the structural strength of the structural part and driving force generated by the actuator part. In this paper, strength evaluation of the structural part is performed by nonlinear FEA. From the comparison between the analytical result and measurement results, defl ection of the structural part is obtained. On the other hand, the driving force that is generated by the actuator part is also analyzed. Based on the analytical results, an empirical equation about the driving force is induced. The validity of the empirical equation is confi rmed by the comparison between measurement values and the values of the empirical equation. These results will contribute to an optimum design of the proposed fl exible mechanical system.","PeriodicalId":216805,"journal":{"name":"TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127653024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Automation and Robotics Group, Politecnico di Torino, Italy (特集海外のフルードパワー研究者は語る) Automation and Robotics Group, Politecnico di Torino, Italy(专题海外水果力量研究人员谈)

TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY Pub Date : 2010-01-15 DOI: 10.5739/JFPS.41.14

Zhen Xiu, Canghai Liu, A. Kitagawa, H. Tsukagoshi, Ken-ichiro Konishi

引用次数: 0

Omni-Directional Vision and 3D Robot Animation Based Teleoperation of Hydraulically Actuated Hexapod Robot COMET-IV 基于全向视觉和三维机器人动画的液压驱动六足机器人COMET-IV遥操作

TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY Pub Date : 2009-11-15 DOI: 10.5739/JFPS.40.117

H. Ohroku, K. Nonami

引用次数: 7

Nonlinear Adhesion Observer for Pneumatic Brake Systems of a Railway Vehicle 铁道车辆气动制动系统的非线性附着观测器

TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY Pub Date : 2009-09-15 DOI: 10.5739/JFPS.40.87

H. Yamazaki

{"title":"Nonlinear Adhesion Observer for Pneumatic Brake Systems of a Railway Vehicle","authors":"H. Yamazaki","doi":"10.5739/JFPS.40.87","DOIUrl":"https://doi.org/10.5739/JFPS.40.87","url":null,"abstract":"This paper shows that the VSS observer has the possibility to estimate adhesion force using wheel slip simulation and wheel slip experiments. It has been shown that the disturbance observer was effectives in estimation of adhesion force. To apply a strain gauge to the brake caliper in order to measure the braking torque is difficult, because the delicate parts on bogies are to be avoided at the train depot. When all the axles of vehicles slip, the wheel slip prevention cannot work sufficiently. Moreover, the brake systems of railway vehicles possess strong nonlinear characteristics with variable parameters, such as adhesion force and friction coefficient of brake materials. It is important that the estimation method has robustness against such disturbance and parameter changes, and it is known that the Variable Structure System (VSS) observer has robustness against parameter change, disturbance input and so on. However, there have been no research reports about a Variable Structure System (VSS) observer for the brake system or wheel slip preventing methods in a railway vehicle. In order to compare the theoretical value of adhesion force with estimated value by a VSS observer, wheel slip simulation was preformed. Simulation results show that the VSS observer can estimate the adhesion force efficiently. Moreover, estimation experiments of adhesion force using VSS observer were performed, and it has been clarified that the VSS observer can efficiently estimate the tangential force coefficient from the experimental results.","PeriodicalId":216805,"journal":{"name":"TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121029927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Initial Study of Power-Assisted Lift with Clutch-Type Actuator Using MR Fluid 基于磁流变液的离合器式动力辅助升力的初步研究

TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY Pub Date : 2009-07-15 DOI: 10.5739/JFPS.40.72

T. Kikuchi, Kenichi Ikeda, J. Furusho

引用次数: 2

Characteristics of Compressible Fluid System including Branch and Junction 可压缩流体系统包括分支和连接处的特性

TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY Pub Date : 2009-05-15 DOI: 10.5739/JFPS.40.50

Xiaojian Zhang, M. Yoshida, T. Kagawa, S. Iio

引用次数: 1

オーガナイズドセッションに見る研究動向 : Human-Machine System 组织会话研究趋势:人机系统

TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY Pub Date : 2006-01-15 DOI: 10.1007/springerreference_15920

則次俊郎

引用次数: 0

Research on Hydro-Mechanical shift system of Belt-CVT to improve both efficiency and performance 带式无级变速器液压机械换挡系统的研究，以提高效率和性能

TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY Pub Date : 2005-11-15 DOI: 10.5739/JFPS.36.152

T. Wakahara, T. Izumi, Toshiji Iida, Hirohisa Tanaka

引用次数: 3

自動車油圧パワーステアリングシステムに発生する自励振動"ジャダー"に関する研究关于汽车液压助力转向系统中产生的自励振动“干扰器”的研究

TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY Pub Date : 2005-03-15 DOI: 10.5739/JFPS.36.31

英一小嶋, 吉史西尾, 朝久王

{"title":"自動車油圧パワーステアリングシステムに発生する自励振動\"ジャダー\"に関する研究","authors":"英一小嶋, 吉史西尾, 朝久王","doi":"10.5739/JFPS.36.31","DOIUrl":"https://doi.org/10.5739/JFPS.36.31","url":null,"abstract":"A hydraulic power steering system uses a hydro-mechanical bilateral servo mechanism to assist the driver in applying steering input commands to the vehicle. A violent self-excited vibration accompanied with sound, known as \"judder\", can occur during rapid steering maneuvers. It is explained explicitly using the present simulation model that the self-excited vibration is caused by the interaction of the hydraulic and mechanical (structural) dynamics of the vehicle. It is demonstrated that the main factors inducing the self-excited vibration are the response delay of wave propagation in the supply line, which can be represented decisively by the phase lag of frequency response characteristics of hydraulic impedance of the supply line at the servo valve end, as well as the sensitivity of the servo valve. Some specific analytical results that reveal the interaction of the hydraulic/mechanical dynamics are examined and compared with the experimental results performed on the bench test apparatus. Analytical results agree well with the test results. It is also explained that even if the system is dynamically unstable in substance the self-excited vibration can not occur owing to the coulomb friction acting on the rack bar, not when the vibration is excited over some threshold value. The proposed numerical simulation technique will be found to be very useful in searching the optimum parameters for steering design.","PeriodicalId":216805,"journal":{"name":"TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127064237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A Development of Direct-Driven Water Hydraulic High Speed Solenoid Value 直驱水力高速电磁阀的研制

TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY Pub Date : 2005-01-15 DOI: 10.5739/JFPS.36.8

P. Sung-Hwan, A. Kitagawa, M. Kawashima

引用次数: 6