模糊自校正PID液位串级控制系统设计与仿真.pdf

文档介绍：第 29 卷第 3 期实验室研究与探索 Vol. 29 No. 3
2010 年 3 月 RESEARCH AND EXPLORATION IN LABORATORY Mar. 2010
模糊自校正 PID 液位串级控制系统设计与仿真
林屹, 叶小岭
南京信息工程大学信息与控制学院,江苏南京 210044
摘要针对双容水箱液位控制问题,探讨了模糊控制理论在液位控制系统中的应用,提出了基于模糊
自校正 PID 的串级液位控制方案,设计了一种模糊自校正 PID 控制器,并在此基础上对该双容水箱液位
在 3 种不同控制方案,即单回路 PID 控制、串级控制以及基于模糊自校正 PID 的串级控制下的控制效果
进行了 Simulink 仿真研究。结果表明,相对于常规单回路 PID 以及常规串级控制,基于模糊自校正 PID
的串级控制系统在超调量、调节时间、抗干扰等方面有更好的控制品质。
关键词模糊控制比例积分微分控制串级控制系统自校正
中图分类号TP 273 文献标识码A 文章编号1006 - 7167201003 - 0017 - 04
Design and Simulation of Liquid Level Cascade
Control System Based on Fuzzy Self-Tuning PID
LIN Yi, YE Xiao-ling
College of Information and Control,Nanjing University of Information Science & Technology,Nanjing 210044,China
Abstract Aiming at the liquid level control of double water-tank,this paper discussed the application of fuzzy control
theory in liquid level control system. A cascade control method based on fuzzy self-tuning PID controller was proposed.
The design method of this fuzzy self-tuning PID controller was put forward. The fuzzy self-tuning PID controller was de-
signed and three kinds of control methods,the single loop PID control system,the cascade control system and the cas-
cade control system based on fuzzy self-tuning PID were simulated with Simulink. The analysis and simulation results in-
dicate that the overshoot,the adjusting time and the capacity of anti-