the study showed that under contain load and input speed, the output speed of the coupling could be controlled by modulating the strength of the applied dc field, which provides a new control means for continuous speed modulating of a transmission system 实验表明,在确定负载和输入速度下,可以通过调节直流电场控制联轴器的输出速度。这为传动系统的无级调速提供了一种新的更简便的手段。