For the electro-hydraulic position servo system with active disturbance rejection control strategy,too high system order could lead to many variables to be observed by the state observer,phase lag of the observed information and system response lag and overshoot,a high gain active disturbance rejection control scheme was adopted.The system model order was reduced to simplify the con-troller structure and reduce the parameters to be adjusted.On the basis of the traditional extended state observer,the differential signal of the total disturbance of the system was further observed to observe the change trend of the system disturbance and generate effective ad-vance compensation signal,so as to improve the control performance and disturbance rejection ability of the system.Finally,the co-simu-lation was performed by MATLAB and AMESim.The results show that compared with the traditional active disturbance rejection control,the overshoot of the system is reduced by 85％,the response speed is increased by 47.7％,and the anti-interference ability of the sys-tem is effectively improved,which has better dynamic and steady performance.
关键词
电液位置伺服系统/自抗扰控制/扩张状态观测器/高增益
Key words
electro-hydraulic position servo system/active disturbance rejection control/expanded state observer/high-gain
维普
万方数据