基于信号补偿PID的水箱液位先进过程控制系统的设计与开发  

Design and Development of Advanced Process Control System for Tank Level Based on Signal Compensated PID

作　　者：崔华俊 郭颖[1] 焦景松 韩康 施惠元[1] 苏成利[1,2] CUI Hua-jun;GUO Ying;JIAO Jing-song;HAN Kang;SHI Hui-yuan;SU Cheng-li(School of Information and Control Engineering,Liaoning Petrochemical University,Fushun 113001,China;School of Information Engineering,Liaodong University,Dandong 118003,China)

机构地区：[1]辽宁石油化工大学信息与控制工程学院,辽宁抚顺113001 [2]辽东学院信息工程学院,辽宁丹东118003

出　　处：《辽东学院学报(自然科学版)》2024年第3期175-184,共10页Journal of Liaodong University:Natural Science Edition

基　　金：国家自然科学基金项目(62203202);兴辽人才计划项目(XLYC2203160);辽宁省科技计划联合计划应用基础研究项目(2023JH2/101700315);大学生创新创业训练计划项目(202310148027)。

摘　　要：针对目前水箱液位控制系统难以有效处理非线性及抗干扰性较差等问题,设计了一套基于信号补偿PID算法的水箱液位先进过程控制系统。系统结合水箱的动态特性,建立了具有未建模高阶非线性项的水箱动态模型。针对模型线性部分设计了PID控制器,为补偿未建模高阶非线性项的影响设计了前一时刻及其变化率的补偿器,提出了具有信号补偿的PID控制器方法,在此基础上构建系统闭环方程,并保证其稳定性。先进过程控制系统利用无线通讯设备建立数据传输平台,在上位机的MCGS组态软件中设计控制界面,将信号补偿PID算法应用于水箱液位控制系统。实验结果表明该系统稳定性较好、响应较快且控制精度较高。Aiming at the existing tank level control system,which is difficult to deal with nonlinearity effectively and has poor anti-interference,the advanced process control systems for tank level based on a signal compensation PID algorithm is designed.The system combines the dynamic characteristics of the tank and establishes a dynamic model of the tank with unmodeled higher-order nonlinear terms.The PID controller is designed for the linear part of the model,and the compensators for the previous moment and its rate of change are designed to compensate for the effect of the unmodeled higher-order nonlinear term.The above controllers constitute PID controllers with signal compensation,on the basis of which the closed-loop equations of the system are constructed and their stability is guaranteed.The advanced process control system utilizes wireless communication equipment to establish a data transmission platform,designs the control interface in the MCGS configuration software of the upper computer,and applies the signal-compensated PID algorithm to the tank level control system.The experimental results show that the designed advanced process control system has better stability,faster response,and higher control accuracy.

关 键 词：水箱液位控制系统 PID 信号补偿 无线通讯 MCGS组态 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]