Fuzzy PID Control Technology for Former Tank’s Liquid Level of the Aluminum Cast Rolling

Feng Hui; Liu Wufa

doi:10.15980/j.tzzz.2016.02.010

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Fuzzy PID Control Technology for Former Tank’s Liquid Level of the Aluminum Cast Rolling
Vol. 36, Issue 2, Pages: 148-151(2016)
Published： 2016 ，
DOI： 10.15980/j.tzzz.2016.02.010

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[1]冯辉,刘武发.铝板铸轧前槽液面模糊PID控制技术研究[J].特种铸造及有色合金,2016,36(02):148-151.

Feng Hui, Liu Wufa. Fuzzy PID Control Technology for Former Tank’s Liquid Level of the Aluminum Cast Rolling. [J]. Special Casting & Nonferrous Alloys 36(2):148-151(2016)
[1]冯辉,刘武发.铝板铸轧前槽液面模糊PID控制技术研究[J].特种铸造及有色合金,2016,36(02):148-151. DOI： 10.15980/j.tzzz.2016.02.010.

Feng Hui, Liu Wufa. Fuzzy PID Control Technology for Former Tank’s Liquid Level of the Aluminum Cast Rolling. [J]. Special Casting & Nonferrous Alloys 36(2):148-151(2016) DOI： 10.15980/j.tzzz.2016.02.010.

摘要

针对前槽液位控制具有非线性、多扰动、迟延性等特点

传统的PID控制由于适应性不足

往往不能满足设计精度要求

故提出了将参数自调节模糊PID控制器应用于前槽液位控制系统中。该方法利用模糊推理在线调整PID参数

使液位控制系统在不同状态下能获得更好的控制效果。Simulink仿真结果表明

模糊PID控制器能够使系统的动态和静态特性明显改善

超调量小

响应速度快

调整时间短。

Abstract

It is important for the former tank’s level control precision to ensure the quality of the aluminum cast rolling.For the characteristics of nonlinear

multi-disturbance and time delay of the former tank’s level control

due to the lack of adaptability

the traditional PID control often can’t meet the designed accuracy requirements.Therefore

a method of parameter self-adjusting fuzzy PID control was presented.The method adopts fuzzy reasoning to online adjust PID parameters to realize the better control accuracy in different conditions of liquid level control system.Simulink simulation result reveals that the fuzzy PID control can improve significantly the dynamic and static characteristics of the system with the small overshoot

the fast response and the short adjustment time.