In order to solve the problems of low control accuracy caused by uncertain parameters,nonlinearity and susceptibility to external interference in the process of active loading of electro-hydraulic load simulator,an active loading force control method based on model reference adaptive was proposed.According to the working principle of the electro-hydraulic load simulator loading system,the mathematical model of the system was established,the transfer function of the system was obtained by identifying the parameter model.The model reference adaptive controller was designed,and the stability of the controller was verified by the Lyapunov theory.Finally,the proposed control method was analyzed by the AMESim and Simulink co-simulation.The simulation results show that compared with the traditional PID controller,the model reference adaptive controller significantly improves the control accuracy and response speed of the loading system under different loading force instructions,and the loading force error is controlled within 0.6％,which effectively suppres-ses external interference.
关键词
主动加载力/模型参考自适应控制/参数模型辨识/负载模拟器
Key words
active loading force/model reference adaptive control/parameter model identification/load simulator
维普
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