介绍了一种圆筒式磁流变离合器的工作原理,描述了磁流变液随外加磁场变化的流变特性,基于磁流变液在两圆筒间作剪切流动的动量方程,分析了外加磁场对流速的影响,得到了转矩和输出转速的表达式。研究结果表明:转矩随外加磁场的增加而增加,输出转速能被外加磁场连续控制。 This paper introduces the working principle of a cylindrical magnetorheological clutch, describes the rheological properties of the magnetorheological fluid with the change of the applied magnetic field, and based on the momentum equation of the shear flow of the magnetorheological fluid between the two cylinders, The effect of the magnetic field on the flow rate, the expression of the torque and the output speed is obtained. The results show that the torque increases with the increase of the applied magnetic field, and the output speed can be continuously controlled by the applied magnetic field.