磁流变离合器及恒矩器的研究

磁流变离合器(MagnetorheologicalfluidsClutch,MRC)是一种利用小电流实现控制的新型离合器,磁流变恒矩器(MagnetorheologicalfluidsTorque converter,MRT)是通过与转矩成线性关系的励磁电流来控制输出转矩大小的控制器,它们在伺服机构、仪表和小型机械上具有广阔的应用前景。针对筒式MRC和MRT,采用Bingham模型进行了线圈电流和输出转矩的计算,对样机磁路结构进行了电磁场有限元仿真分析。通过样机的实验证明,这种新型离合器及恒矩器能传递较大的转矩,具有很好的应用前景。

Study of a Magneto-Rheological Fluid Clutch and Torque-Converter

This paper presents a new type of magneto-rheological fluid clutch and magneto-rheological fluid torque-converter (MRT) which can be applied to the servo-mechanism, instrument and mini-type machinery. The clutch′s output torque can be controlled accurately by the current of the excitation coil. The output torque and the excitation current of the clutch are derived by using the Bingham plastic constitutive model. Electromagnetic finite element analysis (FEA) is employed to simulate the magnetic circuit of the clutch. An experiment of the prototype demonstrates that the clutch is capable of producing high controllable torques.