基于改进遗传算法的数字PID参数整定  

The Parameters Tuning of the Digital PID Controller Based on an Improved Genetic Algorithm

作　　者：席育凡[1] 曾光[1] 张静刚[1] 

机构地区：[1]西安理工大学自动化与信息工程学院,陕西西安710048

出　　处：《西安理工大学学报》2006年第4期403-406,共4页Journal of Xi'an University of Technology

摘　　要：提出了一种改进遗传算法整定数字PID参数,对所得的参数在Matlab下进行了仿真,并以89C51单片机为控制器对二阶被控对象进行了实验。仿真与实验结果表明,该方法比简单遗传算法收敛速度更快,收敛过程更平稳;所得参数对被控对象阶跃响应控制效果优良,使被控对象的输出能快速、稳定、准确地跟随输入信号。This paper presents an improved genetic algorithm for parameters tuning of PID controller, makes the simulation of the parameters obtained under Matlab, and also, the experiment for a second-order plant model based on the 89C51 MCU controller is conducted. The simulation and experiment results indicate that the improved genetic algorithm has faster convergence rate and smoother convergence process than simple genetic algorithm. The parameters obtained are su- perior to the respond control effect upon the controlled step order plant, whereby making the output of plant follow the input signal quickly, stably and accurately.

关 键 词：改进遗传算法 PID参数 MATLAB仿真 单片机控制器 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]