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Development of Micro-vibration Isolation System Using ER Active Damper

采用ER主动阻尼器的微隔振系统的开发

基本信息

批准号：
07555395
负责人：
NAKANO Masami
金额：
$ 0.32万
依托单位：
Yamagata University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07555395/
关键词：
ER Suspension Liquid Crystalline Polymer Dynamic Viscoelasticity ER Damper Active Damper Vibration Isolation Control Micro-Vibration ER流体粘弾性特性ダンパ

项目摘要

This research is characterized by investigating novel concepts of vibration control utilizing ER damper which should be resonably derived from the ER properties of ER fluids. In this research, the concepts of an active damper using electrorheological fluids containing numerous dielectric particles have been already proposed, in which the friction like damping force produced by ER effects has been electrically varied in proportion to the relative and absolute velocities of vibrating obstacles. In order to develop a micro-vibration isolator system using ER dampers controlled according to the proposed control concepts of the ER active damper, the following investigations have been done.(1) The steady and transient characteristics of ER effects and dynamic viscoelasticity in both shear flow and pressure flow modes were experimentally clarified to evaluate the fundamental characteristics of damping force of ER damper utilizing both flow geometries, and the pressure flow geometry was found t … More o be suitable for the ER damper applied to micro-vibration isolation systems.(2) Considering the above results, an antagonized ER bellows damper has been developed, in which two elastic chambers consisting metal bellows are connected each other by an ER valve with several cylindrical electrodes and the damping force corresponding to the pressure difference between both chambers are generated by connecting each other two pressurized plates installed to the outer end of both chambers using two connecting and sliding rods outside the chambers. The dynamic damping properties of the developed ER damper filled with an ER suspension and with a liquid crystalline polymer have been investigated experimentally and compared with each other.(3) The proposed novel control strategies using the ER active damper were applied to a single-degree-of-freedom vibration isolation system consisting of a mass, a spring, and the ER damper which is modeled after one of the legs of a vibration isolation table. The proposed new conceptual nonlinear feedback control strategy was found to be most effective to reduce the vibration transmissibility of the system, and to lead the vibration isolation results almost similar to that of a full active vibration control case using an actuator. Moreover, the design and control strategies of the ER damper have been improved from the viewpoint of micro-vibration isolation. Less

这项研究的特点是研究利用电流变阻尼器进行振动控制的新概念，这些概念应合理地源自电流变流体的电流变特性。在这项研究中，已经提出了使用含有大量介电粒子的电流变流体的主动阻尼器的概念，其中由电流变效应产生的摩擦阻尼力与振动障碍物的相对速度和绝对速度成比例地发生电变化。为了开发一种根据所提出的ER主动阻尼器控制概念控制的ER阻尼器微隔振系统，进行了以下研究。(1)通过实验阐明了剪切流和压力流模式下ER效应和动态粘弹性的稳态和瞬态特性，以评估利用两种流动几何形状的ER阻尼器阻尼力的基本特性，并找到了压力流几何形状 (2)考虑到上述结果，开发了一种对抗式ER波纹管阻尼器，其中由金属波纹管组成的两个弹性室通过带有多个圆柱形电极的ER阀相互连接，通过将安装在两个室外端的两个加压板相互连接来产生与两个室之间压差相对应的阻尼力。在腔室外使用两个连接杆和滑动杆。我们对所开发的填充有ER悬架和液晶聚合物的ER阻尼器的动态阻尼特性进行了实验研究，并进行了相互比较。(3)所提出的使用ER主动阻尼器的新型控制策略应用于单自由度隔振系统，该系统由质量块、弹簧和ER阻尼器组成，该系统以隔振台的一条腿为模型。发现所提出的新概念非线性反馈控制策略对于降低系统的振动传递率是最有效的，并且导致隔振结果几乎类似于使用执行器的完全主动振动控制情况。此外，从微隔振的角度改进了ER阻尼器的设计和控制策略。较少的