变论域模糊自适应PID控制  

Fuzzy Self-adaptive PID Control Based On Changing Domain

作　　者：李广军[1] 张雪平[2] 杨欣[2] 

机构地区：[1]宜宾学院网管中心 [2]宜宾学院物理与电子工程学院,四川宜宾644000

出　　处：《宜宾学院学报》2010年第6期52-54,共3页Journal of Yibin University

摘　　要：模糊自适应PID控制器具有PID控制精度高,又具有模糊控制器快速、适应强的特点,工业控制中应用广泛.但是传统的模糊控制精度低,常常影响模糊自适应PID控制效果.因此,通过改变模糊输入和输出变量的论域,提出了一种基于新型伸缩因子的变论域模糊自适应PID控制方法.该方法以简单函数作为伸缩因子,简单方便,计算量小,并给出其严格性证明.仿真结果显示,该方法超调量小,控制精度高,控制效果明显好于模糊自适应PID控制器.Fuzzy self-adaptive PID controller is widely used in industrial control for its precise PID controller and the good adaptability and fast response.The conventional fuzzy control has bad effects because of its low precision.Accordingly,a fuzzy self-adaptive PID control was proposed through changing fuzzy input and output variables based on a new scaling factor.It adopts the simple function as scaling factor and it is simple,convenient and in low computation complexity and strictly testified.Simulation results show that the control effects are better than fuzzy self-adaptive PID control with high precision and low overshoot.

关 键 词：模糊控制 变论域 伸缩因子 PID控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]