华南理工大学学报(自然科学版) ›› 2005, Vol. 33 ›› Issue (2): 39-42.

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一种基于满意度的PID参数整定方法

吴晓朝 吴捷 李全国   

  1. 华南理工大学 电力学院,广东 广州 510640
  • 收稿日期:2004-05-14 出版日期:2005-02-25 发布日期:2005-02-25
  • 通信作者: 吴晓朝(1977-),男,博士生,主要从事智能控制、满意控制、风力发电监控系统及现场总线等方面研究. E-mail:wuxiaochao@ 126.com
  • 作者简介:吴晓朝(1977-),男,博士生,主要从事智能控制、满意控制、风力发电监控系统及现场总线等方面研究.

An Algorithm for Tuning PID Parameters Based on Satisfactory Degree

Wu Xiao-chao  Wu Jie  Li Quan-guo   

  1. College of Electric Power,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China
  • Received:2004-05-14 Online:2005-02-25 Published:2005-02-25
  • Contact: 吴晓朝(1977-),男,博士生,主要从事智能控制、满意控制、风力发电监控系统及现场总线等方面研究. E-mail:wuxiaochao@ 126.com
  • About author:吴晓朝(1977-),男,博士生,主要从事智能控制、满意控制、风力发电监控系统及现场总线等方面研究.

摘要: 提出了一种基于满意度与遗传算法的PID(Proportional Integral Derivative)参数在线整定控制器的设计方法.利用满意解的原理设计系统响应超调量、上升时间及调整时间等的满意度函数,再离线通过遗传算法搜索PID控制器的3个参数kp,ki和k d作为在线调整PID参数的基值,然后设计跟踪误差与kp,ki和k d的关系函数,在线调整PID控制器参数,以获得良好的稳态性能、动态性能及鲁棒性能.Matlab仿真结果证明了所提出的PID控制器的有效性.

关键词: PID控制器, 满意度, 遗传算法, 智能控制

Abstract:

A controller for the on-line tuning of PID(Proportional-Integral-Derivative)parameters based on the sa-tisfactory degree and genetic algorithm is proposed.With the theory of satisfactory solution,the satisfactory func-tions of over-shoot,rise time and setting time of the system response are designed,and the three parameters kp,kiand kd of the PID controller are obtained by means of gaenetic algorithm.These three parameters are used as the base values for the on-line tuning of PID parameters.Then,by designing the nexus functions between the tracking error and kp,ki,kd,the PID controller parameters are adjusted online,thus improving the static performance,dy-namic perform ance and robust perform ance of the control system.The results of Matlab simulation show that the proposed PID controller is valid.

Key words: PID controller, satisfactory degree, genetic algorithm, intelligent contro