基于自适应模糊PID控制方法的研究

A Control Method Based on Adaptive Fuzzy PID Controller

PID控制广泛应用于工业控制过程中,由于传统的PID对非线性控制、控制精度以及响应速度等方面存在着不可逆转的不足,采取了一种自适应模糊PID的控制策略。首先论述了传统PID控制的原理和特点,然后对自适应模糊PID控制器的控制原理进行了分析,确定了隶属函数、模糊语言变量以及模糊规则;然后简述了自适应性的校正方法;最后通过仿真软件中的Simulink对传统PID以及自适应模糊PID控制的模型进行了仿真。仿真结果表明,自适应模糊PID控制具有更好的动态响应性能。

Firstly,this paper introduces the principle and characteristics of conventional PID controller,and analyzes the principle of adaptive fuzzy PID controller.Then,it determines the membership function,the variables of fuzzy language and fuzzy rules,as well as the method of adaptive correction.At last,it constructs the model of adaptive fuzzy PID control and traditional PID system in Simulink environment.The study results show that,compared with the conventional PID controller,the adaptive fuzzy PID controllor has good performance of dynamic response.