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Development of gel-structured electro-rheological fluids and their application to nano positioning mechanism

凝胶结构电流变液的研制及其在纳米定位机构中的应用

基本信息

批准号：
15360074
负责人：
AOYAMA Tojiro
金额：
$ 9.22万
依托单位：
KEIO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

项目摘要

Electro-rheological fluids (ERF) are functional fluids whose viscoelastic properties vary with the intensity of the applied electric field. The property of ERF has been expected to control the performances of machine elements, and the ERF has been applied to machine elements such as variable dampers and clutches. However, the disadvantages of ERF are the sedimentation of ER particles and the requirement of seal mechanism. The sedimentation of ER particles reduces the ER effects, results in low stability of ER devices. To solve these problems, gel structured electro-rheological fluids (ERG) were developed in this study. The separation and sedimentation of ER particles from the base oil were successfully suppressed because the frames of gel prevent the particles from sedimentation. The basic characteristics of ERG were experimentally analyzed. On the basis of the results of the basic analysis, ERG was applied to the nano positioning mechanism and their performances were evaluated. First of all, the relation between the constituents of ERG and the performance are experimentally investigated. The experimental analysis clarified that the generated shear stress of ERG under electric field is 20〜30 times as large as that of ERF. The ERG also shows the high repeatability of ER effect. These high performances of ERG suggest that the occurrence mechanism of ER effect in ERG is different from that in ERF, which originate the particle chain formation. The ER effect of ERG originates the change of frictional condition on ERG surface due to the variation of surface properties according to the applied electric field. Based on the performance analysis, ERG was applied to the clamp mechanism for aero-static slider. The zero force clamping mechanism was proposed by using the ERG. The error movement of slider in clamping does not occur and the clamping force is adjusted electrically.

电流变液（ERF）是一种粘弹性随外加电场强度变化的功能流体。人们期望利用电激流的特性来控制机械元件的性能，并将其应用于可变阻尼器和离合器等机械元件。但其缺点是内质网粒子的沉降和对密封机制的要求。电流变粒子的沉降降低了电流变效应，导致电流变器件的稳定性降低。为了解决这些问题，本研究开发了凝胶结构电流变液（ERG）。由于凝胶的结构阻止了内质网颗粒的沉降，从而成功地抑制了内质网颗粒从基础油中分离和沉降。实验分析了ERG的基本特征。在基本分析结果的基础上，将ERG应用于纳米定位机构，并对其性能进行了评价。首先，通过实验研究了ERG的组成与性能的关系。实验分析表明，电场作用下ERG产生的剪应力是ERF的20 ~ 30倍。ERG还显示了ER效应的高重复性。ERG的这些高性能表明ERG中ER效应的发生机制与ERF中不同，ERG效应源于颗粒链的形成。电液的内电效应源于电液表面的摩擦条件随着外加电场的变化而发生变化。在性能分析的基础上，将ergg应用于气动静压滑块夹紧机构。利用ERG提出了零力夹紧机构。不发生滑块夹紧时的误差运动，夹紧力电调节。

项目成果

期刊论文数量（25）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Development of Gel Structured Electrorheological Fluids and their Applications for the Precision Clamping Mechanism of Aerostatic Sliders.

凝胶结构电流变液的开发及其在空气静压滑块精密夹紧机构中的应用。

DOI：
发表时间：
2004
期刊：
Annals of the CIRP 53/1
影响因子：
0
作者：
Y.Kakinuma;T.Aoyama;et al.;T.Aoyama
通讯作者：
T.Aoyama

Application of ER gel with variable friction surface to the clamp system of aerostatic slider

DOI：
10.1016/j.precisioneng.2005.09.004
发表时间：
2006-07
期刊：
Precision Engineering-journal of The International Societies for Precision Engineering and Nanotechnology
影响因子：
3.6
作者：
Y. Kakinuma;T. Aoyama;H. Anzai;Hiroharu Sakurai;K. Isobe;Katsutoshi Tanaka
通讯作者：
Y. Kakinuma;T. Aoyama;H. Anzai;Hiroharu Sakurai;K. Isobe;Katsutoshi Tanaka

Basic Properties of Gel-structured Electro-rheological Fluids.

凝胶结构电流变流体的基本性质。