基于模糊九点控制器的自适应控制系统设计方法研究

Study of Self-Adaptive Control System Based on Fuzzy Nine-point Controller

由于传统自适应PID控制算法在线调节PID的三个参数难度较大,现将模糊九点控制器加入到自适应控制系统中,根据系统偏差e和偏差变化率ec的不同,将系统状态分为九种情况,运用模糊九点控制器进行参数自整定,调节系统在不同状态下的控制特性。该控制方法不依赖数学模型,切实有效,具有稳定型好,调节精度高等特点,是一种表达人类控制思想的新方案。

In the view of the problem that in the traditional self-adaptive PID control algorithm it is relatively difficult to regulate the three parameters of the PID controller online,we add the fuzzy nine-point controller to self-adaptive control system.According to the differences in system error and the change of the rate of system error,the system are divided into nine conditions.This paper makes parameter self-turning of PID by fuzzy nine-point controller to regulate different control characters in different conditions of the system.With the characters of good stability and high accuracy,this new design do not depend on the accurate mathematical motel and work well in practice.It is a new design to express human＇s idea of control.