摘要
城市恒压变频供水系统具有纯滞后时间长、扰动量多的特点,常规PID控制很难达到理想的控制效果.为此设计了一种遗传算法优化的模糊PID复合控制策略,融合了模糊控制适应性强和PID控制调节精度高的特点,同时利用遗传算法对模糊控制规则和PID参数进行全局优化,使其更好地适应供水系统的实际需求.仿真结果表明,基于此控制策略的恒压变频供水系统的控制品质有了较大的改善和提高.
Water supply system of constant pressure and frequency conversion has the characteristics of existing a long time lag and being disturbed easily by noises,so it is difficult to obtain satisfactory control effect using conventional PID control.This paper proposes an fuzzy and PID controller combination based on genetic algorthm,which makes the system have the agility and adjustability characteristics owing to the fuzzy control system and run stably resulting from the PID control system,the structure of fuzzy rule bases and PID parameters are optimized by genetic algorthm,so that the control system will better prepare them for water supply system.The simulation results show that the new control strategy has better performance.
出处
《郑州大学学报（工学版）》
CAS
北大核心
2011年第1期85-88,共4页
Journal of Zhengzhou University（Engineering Science）
基金
国家自然科学基金资助项目(60774059)
关键词
变频恒压供水系统
模糊控制
遗传算法
PID控制
water supply system of constant pressure and frequency concersion
fuzzy contrl
genetic algorthm
PID controller
