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基于专家知识的模糊控制在平衡点附近有盲区,很难提高系统的稳态精度,但是动态响应速度快,抗干扰能力强,而传统PID控制则具有良好的稳态精度,基于以上问题提出了基于PID和模糊控制的变结构非线性控制器——F-PID控制器,在误差小时采用PID控制而在误差大时采用模糊控制,这样获得的控制器的控制效果比传统的PID控制和单纯的模糊控制具有更高的稳态精度和更快的动态响应。本文通过仿真,得到了不错的控制效果,验证了文中方法的优点。
Fuzzy control based on expert knowledge has a blind zone near the equilibrium point, which makes it difficult to improve the steady-state accuracy of the system. However, the dynamic response is fast and the anti-interference ability is strong. However, the traditional PID control has good steady-state accuracy. Based on the above problems, Based on PID and fuzzy control of variable structure nonlinear controller - F-PID controller, PID control when the error is small and fuzzy control when the error is large, so the controller obtained control effect than the traditional PID control and simple The fuzzy control has higher steady-state accuracy and faster dynamic response. This article through the simulation, got the good control effect, verified the method the merit of the article.