磁粉离合器是一种新型自动控制元件,它具有良好的静态和动态等特性。本文作者已将其用于齿轮试验台中作加载装置,成功地实现了对齿轮传动机构及其它回转式传动机构的性能测试;文中还按这种加载方法的特点建立了封闭功率流试验的有关公式。试验研究表明,采用磁粉离合器作为加载装置,操作及控制十分方便,是齿轮试验台中一种比较好的加载方法。 Magnetic clutch is a new type of automatic control components, it has good static and dynamic characteristics. The author of this paper has used it in the gear test bench as the loading device, successfully achieved the gear transmission mechanism and other rotary transmission mechanism performance test; this paper also according to the characteristics of this loading method established closed power flow test formula . Experimental studies show that the use of magnetic clutch as a loading device, the operation and control is very convenient, is a good test gear gear loading method.