磁流变传动机构性能的试验研究  

An Experimental Research on Properties of a Magnetorheological Actuator

作　　者：黎文峰[1] 黄宜坚[2] 

机构地区：[1]福建工程学院机电及自动化系,福州350014 [2]华侨大学机电及自动化学院,泉州362011

出　　处：《机械设计与研究》2007年第2期65-67,79,共4页Machine Design And Research

基　　金：福建省高新技术开发研究计划重点项目(2005H035);福建工程学院科研发展基金资助项目(GY-Z0437)

摘　　要：从流体力学的角度推导和分析了圆盘式磁流变传动机构的力矩,并以此为基础讨论了机构的动态品质、功率损耗等与机构的关系。机构传递的力矩由磁致力矩与粘性力矩构成,圆盘外径是提高传递力矩的关键尺寸;外径的增大会减少单位转动惯量所传递的力矩,增大粘性功率损失。两圆盘间隙的增大将减少粘性功率损失和单位转动惯量所传递的力矩。粘性力矩、粘性功率损失和单位转动惯量传递的力矩随磁流变液粘度的增大而增加。励磁电流与传递力矩、单位转动惯量传递的力矩等成指数关系,与功率损耗成负指数关系。Transmitted torque by a disk -shaped magnetorheological actuator was deduced and analysed from the view - point of hydrodynamics. Hence then the actuator dynamic characteristics and viscous power loss relations with the actuator were discussed . Transmitted torque was composed of magnetic force torque and viscosity torque. Maximal diameter of the actuator disk was key size to improving torque . Torque by unit moment of inertia decreases and viscous power loss increases with maximal diameter increasing . Torque by unit moment of inertia and viscous power loss decreases with gap increasing between two disks. Viscosity torque and viscous power loss and torque by unit moment of inertia increase with MRF＇s viscosity increasing . The exciter current an exponential relationship with transmitted torque, torque by unit moment of inertia and viscous power loss.

关 键 词：磁流变液 传动机构 性能参数 结构尺寸 

分 类 号：TH137[机械工程—机械制造及自动化] TH122