为了解决工程中二阶系统的控制问题，在此对PID控制与模糊控制的原理进行了研究，并将二者的优势相互结合，设计了一种具有参数自整定功能的模糊PID控制系统。对PID参数初值的确定，隶属度函数的选取，模糊控制规则表的设计做了较为深入的研究。并利用Matlab/Simulink软件对控制系统进行了仿真研究。对阶跃输入下PID控制系统与该文设计的模糊PID控制系统的响应情况做出了定量的比较。结果表明对于二阶延迟系统，模糊PID控制器的超调量与调节时间均小于传统的PID控制，能显著提高控制效果。%In order to provide a better control scheme for second⁃order systems in engineering projects,the basic principles of PID and fuzzy controllers are researched. A fuzzy PID controller with self⁃tuning function is designed in combination with ad⁃vantages two kinds of controllers. The initial value selection of PID parameters,the design of membership functions and fuzzy control algorithms are investigated in depth. A simulation research on the control system was done with Matlab/Simulink. The step responses of the control systems are compared in quantitative terms. The results demonstrate that the overshoot and setting time of the fuzzy PID controller are less than the traditional ones. It can improve control effect.
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