Study on Micro-gap Flow Behavior of Electrorheological Fluid and Its Application to Haptic Display System

电流变流体微间隙流动行为研究及其在触觉显示系统中的应用

• 批准号: 15310099
• 负责人: NAKANO Masami
• 金额: $ 10.24万
• 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: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15310099/
• 关键词: Electro-Rheological Fluid; Rotational Shear Flow; Oscillatory Squeeze Flow; Pressure Flow; Micro-Gap Flow; ER Valve; Micro-Actuator; Braille display system; せん断流れモード; マイクロギャップ流れ; ナノ粒子ER流体; 流動パターン; 押上力; スクイーズ流れモード; 圧力流れモード; マイクロ流動特性; ER効果 /

ER fluids are one of an exciting family of functional fluids, which show dramatic and reversible rheological changes in several milliseconds when the electric field is applied. In this research, featuring the possibility of miniaturization of ER mechanical elements such as brake, damper and valve due to their construction using only electrodes, the following investigations have been done in order to develop Braille display system utilizing electrorheological fluids as one of haptic display systems.(1) As the fundamental flow fields in designing ER fluid micro system, three flow configurations of a pressure flow, a rotational shear flow and a oscillatory squeeze flow were focused on in this research. For two kinds of micro-particle ER fluids and one kind of nano-particle ER fluid, the micro flow behaviors in the above three flow configurations with an about 0.05-0.3mm micro gap was clarified by flow visualization in close relation to each ER characteristic, and the ER fluid suitable for … More the micro gap flow system and the optimal design concept for applications were shown.(2) The 3-ports micro ER valve, and the diaphragm micro-actuator consisting of two ER valves utilizing a micro-particle ER fluid were fabricated by the photolithography method. The flow rate control characteristics for the 3-ports micro ER valve and the diaphragm response characteristics of the micro-actuator under PID position feedback control were investigated, and the possibility for the ER diaphragm micro-actuator to apply to the Braille display system was evaluated.(3) An ER micro-actuator with a micro-bellows, which performed enough stroke and push-up force for one pin of the Braille display system, was fabricated by the photolithography method and the actuating performances were evaluated experimentally. It was found that ER fluid supply pressure of more than 550 kPa was needed for the developed micro actuator to perform a stroke of 0.5 mm and a push-up force of 0.15 N of the Braille pin. The Braille pin mounted to the top of the micro-bellows of the actuator was driven by applying an on-off control strategy to two ER valves of the actuator. Less

电流变液是一类令人兴奋的功能流体，当施加电场时，这种流体在几毫秒内就会显示出戏剧性和可逆流变学变化。本研究针对电流变机械元件如制动器、阻尼器、阀门等仅用电极就可实现小型化的特点，开展了以下研究工作：(1)作为电流变流体微系统设计的基本流场，本文重点研究了压流、旋转剪切流和振荡挤压流三种流型，开发了基于电流变流体的盲文显示系统。对于两种微粒子电流变液和一种纳米粒子电流变液，通过流动可视化研究了上述三种微间隙流动形态下的微观流动行为，得到了与每种电流变特性密切相关的流型，确定了适用于…的电流变液利用光刻法制备了三孔微电流变阀和由两个电流变阀组成的膜片微执行器。研究了三通式微电流变阀的流量控制特性和位置反馈控制下微执行器的膜片响应特性，评价了膜片微执行器应用于盲文显示系统的可能性。(3)采用光刻法制备了一种能够满足盲文显示系统一针行程和上推力的微执行器，并对其驱动性能进行了实验评价。结果表明，所研制的微致动器要实现0.5 mm的行程和0.15N的盲文销上推力，电流变流体供给压力需要大于550kPa.安装在执行器微波纹管顶部的盲文销是通过对执行器的两个电流变阀应用开关控制策略来驱动的。较少

项目成果

Usefulness of spoken EFL learner-based definitions

基于 EFL 学习者的口语定义的有用性

• 发表时间: 2006
• 期刊: Proceedings of 4^<th> Hawaii International Conference on Education ISSN# 1541-5880
• 作者: TOMITA;NAKAYAMA;RYAN;HONDA;SATO;TANI;ANTHONY
• 通讯作者: ANTHONY

分散系ER流体の回転平行円盤間マイクロギャップフローの動的挙動

分散电流变流体中旋转平行盘之间微间隙流动的动态行为

• 发表时间: 2005
• 期刊: JSME東北支部第41期秋期講演会講演論文集 No.2005-2
• 作者: TOMITA;NAKAYAMA;RYAN;HONDA;SATO;TANI;ANTHONY;H.Nishiyama;M.Nakano;M.Nakano;M.Nakano;M.Nakano;Hideya Nishiyama;Masami Nakano;Masami Nakano;Masami Nakano;気田 亮介
• 通讯作者: 気田 亮介

Dynamic Shear Flow Behavior of Magneto-Rheological Fluid between Two Rotating Parallel Disks under Relatively Weak Magnetic Field

• DOI: 10.1299/jsmeb.48.494
• 发表时间: 2005-08
• 期刊: Jsme International Journal Series B-fluids and Thermal Engineering
• 作者: M. Nakano;Akira Satou;Y. Sugamata;H. Nishiyama

Research trends in OS : "Functional fluids and smart fluid power systems" of the 6^<th> JFPS Int.Symp.on fluid power

OS研究动态：第6届JFPS Int.Symp.on流体动力“功能流体和智能流体动力系统”

• 发表时间: 2006
• 期刊: Report of Research Committee on Smart Fluid Power Systems utilizing Functional Fluids, JFPS
• 作者: TOMITA;NAKAYAMA;RYAN;HONDA;SATO;TANI;ANTHONY;M.Nakano
• 通讯作者: M.Nakano

中野政身: "分散系ER流体のスクイーズ流れモードにおけるレオロジー及び流動特性"日本機械学会東北支部第39期秋季講演会講演論文集. No.031-2. 131-132 (2003)

Masami Nakano：“挤压流动模式下分散电流变流体的流变学和流动特性”日本机械工程师学会东北分会第 39 届秋季会议论文集第 031-132 号（2003 年）。