介绍了一种旋转阀控液压激振器的系统组成 ,对其工作原理进行了分析。通过实验研究了该系统的油压信号和振动加速度信号的特征 ,为掌握这类激振器的性能提供了依据 A system of rotary valve controlled hydraulic exciter is introduced and its working principle is analyzed. The characteristics of the hydraulic signal and the vibration acceleration signal of the system are experimentally studied, which provides a basis for grasping the performance of such exciter