液压伺服系统谐振峰抑制技术研究

Research on Reducing Resonant Peak Technology of Hydraulic Servo System

液压伺服作动器推动发动机喷管实现运载火箭的姿态控制。当液压伺服系统工作在某个频率点时,会与喷管负载产生谐振。当谐振峰值达到一定量级时,就会影响控制系统的稳定性,甚至会导致火箭箭体失稳,造成发射任务失败。为此需要在液压控制系统中采取措施,来抑制谐振的峰值。该文中结合型号研究工作中的实例,分析了液压伺服系统中抑制谐振峰常用的三种方法。

The hydraulic servo actuator drives the engine nozzle to realize the attitude control of the launch vehicle.When the hydraulic servo system works at a certain frequency point,it will resonate with the nozzle load.Too high resonance peak will seriously affect the stability of the control system,and even lead to rocket instability and self destruction,launch mission failure.Therefore,it is necessary to take measures in the hydraulic control system to reduce the resonance peak.In this paper,three methods of reducing resonance peak in hydraulic servo system are analyzed with the example of model research.