中文摘要：

总结了国内外关于轴系振动的各类主动控制执行器的工作特点，设计了一套大型轴系低频振动主动控制新型执行系统，阐述了该系统的结构组成、工作原理和工作过程及其预设功能。该执行系统能依据检测到的轴系振动信号，以液体为介质传递动力，直接加载于振动轴上，并通过电液换向阀组控制喷液时间的长短与间隔，来控制加载力的时间，以消减振动。

英文摘要：

The functional particularities of all kinds of actuators for actively controlling vibration of rotor strings, within this country as well as abroad, are being epitomized, the design of actuator systems for actively controlling low frequency vibration of large rotor strings is being described, together with a elucidation of its build up, working principle, action procedure and its scheduled functions. This actuator system, responding to the rotor＇s vibration signals, exerts a hydraulic pressure directly on the vibrating rotor to damp its vibration, with the time interval of pressure exertion being controlled by a set of electro-hydraulic switching valves.