The oscillation frequency is controlled by means of adjusting variable?displacement hydraulic motors, the oscillation swing is controlled by changing eccentricity distance without causing any deleterious horizontal vibration.

• 通过比例电液减压阀来改变液控变量马达的排量以改变激振频率; 通过结合比例电液减压阀、密封氮气压力位移转换器和机液伺服阀以实现对独立回转的2个偏心体进行等偏心距控制；以消除侧向振动.