• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2018, Vol. 54 ›› Issue (22): 212-217.doi: 10.3901/JME.2018.22.212

• 交叉与前沿 • 上一篇    下一篇

基于Fuzzy-PID的大规格铸锭结晶器液位控制

郭成林1, 蒋日鹏1, 李晓谦2, 李瑞卿1, 张立华2   

  1. 1. 中南大学轻合金研究院 长沙 410083;
    2. 中南大学机电工程学院 长沙 410083
  • 收稿日期:2017-10-16 修回日期:2018-03-15 出版日期:2018-11-20 发布日期:2018-11-20
  • 通讯作者: 蒋日鹏(通信作者),男,1983年出生,讲师,博士。主要研究方向为铸造工艺与装备。E-mail:jiangripeng@163.com
  • 作者简介:郭成林,男,1991年出生。主要研究方向为铸造机装备。E-mail:guotma1@csu.edu.cn
  • 基金资助:
    湖南省科技重大专项(2016GK1004)、国家自然科学基金(51575539,U1637601)和湖南省自然科学基金(2017JJ3391)资助项目。

Mold Level Control of Large Size Ingot Based on Fuzzy Self-Tuning PID

GUO Chenglin1, JIANG Ripeng1, LI Xiaoqian2, LI Ruiqing1, ZHAN Lihua2   

  1. 1. Light Alloy Research Institute, Central South University, Changsha 410083;
    2. School of Mechanical and Electrical Engineering, Central South University, Changsha 410083
  • Received:2017-10-16 Revised:2018-03-15 Online:2018-11-20 Published:2018-11-20

摘要: 大规格铸锭工艺过程复杂,其结晶器液位控制直接影响到铸锭的质量,针对液位控制的时变性和滞后性,建立液位控制系统的数学模型,采用模糊自适应PID控制策略,给出模糊控制规则并进行了控制器的设计,实现了PID参数的在线自整定,Matlab仿真结果表明该系统较常规PID控制具有更好的鲁棒性。在S7-300PLC的基础上改进液位闭环控制程序,加入模糊控制,通过软件WinCC flexible组态触摸屏监控画面,建立与PLC的连接,控制过程与Matlab仿真结果一致。

关键词: Matlab仿真, 模糊控制规则, 模糊自适应PID, 液位控制模型, 组态

Abstract: Manufacturing process of Large size ingot is complex, its mold level control affects the quality of ingot directly,in view of the time variability and hysteresis of mold level control,the mathematical model of the mold level control system is constructed. Furthermore,fuzzy self-tuning PID control strategy is presented and the controller is designed in order to realize the online self-tuning of PID parameters.The simulation results of Matlab show that the system has better robustness than the conventional PID control.Adding fuzzy control to improve the closed-loop control procedures on the basis of S7-300PLC,Configuring the control process by WinCC flexible,and establish connection with PLC,the simulation control results is consistent with the Matlab results.

Key words: configure, fuzzy self-tuning PID, mold level control, rule of fuzzy control, simulation of Matlab

中图分类号: