倾斜镜的变论域自适应模糊PID控制方法OA北大核心CSTPCD

The accuracy and stability of the tip-tilt mirror in adaptive optics depends on the control performance of the system.According to the requirement of the performance index of the control system,an adaptive fuzzy PID control method of variable universe is proposed.According to the identified tip-tilt mirror model,the transfer function of the tip-tilt mirror is established,and the system model is estab-lished by Simulink,and the simulation experiment of the variable universe algorithm is carried out.The simulation results show that compared with the classical PID control and the fuzzy PID control,the adap-tive fuzzy PID control of variable universe has smaller system tracking error in both time domain and fre-quency domain.At the same time,the adaptive fuzzy PID control has better dynamic performance by using the characteristics of parameter self-tuning to overcome the adverse effects of system parameter changes on the robustness.This method not only has the robustness of PID control,but also has the regula-tion ability of fuzzy control,and has simple and effective parameter tuning and adaptive function.