一种非线性PID控制器及其参数分析  

Nonlinear PID Controller and Its Parameter Analysis

作　　者：任永平[1] 李圣怡[1] 

机构地区：[1]国防科技大学机电工程研究所,湖南长沙410073

出　　处：《信息与控制》2005年第4期486-489,共4页Information and Control

摘　　要：利用凸组合方法构造非线性PID控制器,并对有关参数进行了分析.通过简单地调节非线性函数的有关参数,这种非线性PID控制器可以形成灵活的增益策略.采用这种控制器,能够使性能指标互为冲突的双方同时取得较好的控制效果.为检验这一方法的有效性和全面性,本文分别对一个延时过程和一个三阶伺服系统进行了仿真,仿真结果表明,这种控制器具有较好的性能.Based on convex combination, a design method for nonlinear PID controller is proposed and its parameters are analyzed. This kind of nonlinear PID controller holds a flexible gain-schedule by selecting its paranmeters simply. Comparing with the traditional PID controllers, it can give better tradeoffs for some systematic performances which are incompatible. To testify its validity, an industry, process with time delay and a drive system with three orders are considered, and the simulation results show its validities.

关 键 词：非线性函数 PID控制 增益策略 性能指坏 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]