A practical nonlinear robust control approach of electro-hydraulic load simulator  

作　　者：Wang Chengwen Jiao Zongxia Wu Shuai Shang Yaoxing 

机构地区：[1]School of Automation Science and Electrical Engineering, Science and Technology on Aircraft Control Laboratory

出　　处：《Chinese Journal of Aeronautics》2014年第3期735-744,共10页中国航空学报（英文版）

基　　金：supported by the National Key Basic Research Program of China (No. 2014CB046406);the Key Projects of the National Natural Science Foundation of China (No. 51235002)

摘　　要：This paper studies a nonlinear robust control algorithm of the electro-hydraulic load simulator （EHLS）. The tracking performance of the EHLS is mainly limited by the actuator＇s motion disturbance, flow nonlinearity, and friction, etc. The developed controller is developed based on the nonlinear motion loading model. The problems of the actuator＇s disturbance and flow nonlinearity are considered. To address the friction problem, the friction model of the loading motor is identified experimentally. The friction disturbance is compensated using the obtained friction model. Therefore, this paper considers the main three factors comprehensively. The developed algorithm is easy to apply since the controller can be obtained just with one step back-stepping design. The stability of the developed algorithm is proven via Lyapunov analysis. Both co-simulation and experiments are performed to verify the effectiveness of this method.This paper studies a nonlinear robust control algorithm of the electro-hydraulic load simulator （EHLS）. The tracking performance of the EHLS is mainly limited by the actuator＇s motion disturbance, flow nonlinearity, and friction, etc. The developed controller is developed based on the nonlinear motion loading model. The problems of the actuator＇s disturbance and flow nonlinearity are considered. To address the friction problem, the friction model of the loading motor is identified experimentally. The friction disturbance is compensated using the obtained friction model. Therefore, this paper considers the main three factors comprehensively. The developed algorithm is easy to apply since the controller can be obtained just with one step back-stepping design. The stability of the developed algorithm is proven via Lyapunov analysis. Both co-simulation and experiments are performed to verify the effectiveness of this method.

关 键 词：CO-SIMULATION Electro-hydraulic load simulator Hydraulic control equipment Nonlinear robust control Parametric uncertainty 

分 类 号：V216.8[航空宇航科学与技术—航空宇航推进理论与工程]