光学 精密工程, 2017, 25 (9): 2413, 网络出版: 2017-10-30  

基于挤压-剪切模式的高转矩磁流变离合器设计与实验

Design and experiment of high-torque MR clutch in compression-shear mode
作者单位
1 浙江师范大学工学院, 浙江 金华 321004
2 浙江飞亚电梯有限公司技术部, 浙江 金华 321002
摘要
本文设计了一种基于挤压-剪切混合模式磁流变离合器, 建立了用于测试其传动性能的实验装置。首先, 介绍了磁流变离合器的工作原理; 接着, 利用ANSYS有限元仿真分析软件分析了磁路的磁感应强度分布特性; 最后, 搭建了磁流变离合器的传动性能实验测试装置, 测试了磁流变离合器的静态传动性能和动态响应特性。实验结果表明: 转速对磁流变离合器的转矩影响不明显, 而电流和挤压应力对磁流变离合器转矩的影响比较大, 转矩随电流及挤压应力的增加而增加; 在1.0 A的电流和40 r/min的转速下, 挤压应力为150 kPa时, 挤剪式磁流变离合器的转矩可达到146 Nm, 比剪切模式下的磁流变离合器转矩提高了约6.6倍; 响应时间常数先随电流(电流小于0.6 A)的增加而减小, 而后受电流影响不明显; 响应时间随挤压应力和转速的增加而下降; 总体接合响应时间在77 ms以内。所研制的基于挤压-剪切混合模式的磁流变离合器传动性能良好, 控制灵敏。
Abstract
A kind of magnetorheological (MR) clutch in compression-shear mode was designed and an experiment device was fabricated to test its transmission performance. Firstly, working principle of MR clutch was introduced. Secondly, distribution characteristic of magnetic flux intensity of magnetic circuit was analyzed with ANSYS finite elements analysis software. Finally, experiment testing device was established to test static transmission performance and dynamic response characteristics of MR clutch. Experiment result indicates that influence of rotational speed on torque of MR clutch is not obvious, while influence of current and normal stress on torque of MR clutch is great. Moreover, the torque increases with increase of current and normal stress; torque of MR clutch in compression-shear mode can reach 146 Nm, increasing by about 6.6 times than that in only model of shearing when mormal stress is 150 kPa under current of 1.0 A and rotational speed of 40r/min; response time constant decreases with increase of the current (current is less than 0.6 A), later current influence is not obvious; response time decreases with increase of normal stress and rotational speed; overall connection response time is within 77 ms. Transmission performance of the developed MR clutch in compression-shear mode is well and control is sensitive.

王鸿云, 毕成, 赵爽, 阚君武, 高春甫, 贺新升. 基于挤压-剪切模式的高转矩磁流变离合器设计与实验[J]. 光学 精密工程, 2017, 25(9): 2413. WANG Hong-yun, BI Cheng, ZHAO Shuang, KAN Jun-wu, GAO Chun-fu, HE Xin-sheng. Design and experiment of high-torque MR clutch in compression-shear mode[J]. Optics and Precision Engineering, 2017, 25(9): 2413.

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