Smith预估补偿与积分分离PID在供热控制系统中的应用  

Application of Smith predictor compensation and integral separation PID in heating control system

作　　者：王荣鑫 葛振福 侯晨晨 WANG Rongxin;GE Zhenfu;HOU Chenchen(Zibo Heating Group Co.,Ltd.,Shandong Zibo 255000,China;Zibo Heating Co.,Ltd.,Shandong Zibo 255000,China)

机构地区：[1]淄博市热力集团有限责任公司,山东淄博255000 [2]淄博热力有限公司,山东淄博255000

出　　处：《工业仪表与自动化装置》2024年第4期71-74,共4页Industrial Instrumentation & Automation

摘　　要：针对供热控制系统时延性较大、传统PID策略控制精度不高、易产生超调与静态误差等问题,提出了一种史密斯(Smith)预估补偿与积分分离PID相结合的供热系统控制策略。首先,设计了供水温度控制系统的Smith预估补偿器,以降低热惰性因素对控制性能的影响;其次,给出了积分分离策略,用于消除静态误差;最后,将Smith预估补偿器与积分分离PID在PLC控制系统中进行部署调试,并进行实践研究。实践证明,Smith预估补偿与积分分离PID相结合的控制策略能最大限度地减弱大时延对供热系统的影响,有效提升系统的控制精度与控制性能。A heating system control strategy combining Smith predictor compensation and integral separation PID is proposed to address the issues of high time delay,low precision of traditional PID strategy control,and easy generation of overshoot and static errors in heating control systems.Firstly,a Smith predictor compensator was designed for the water supply temperature control system to reduce the impact of thermal inertness on control performance.Secondly,an integral separation strategy was proposed to eliminate static errors.Finally,deploy and debug the Smith predictor compensator and integral separated PID in the PLC control system,and conduct practical research.Practice has proven that the control strategy combining Smith′s predictor compensation and integral separation PID can minimize the impact of large time delays on the heating system,effectively improving the control accuracy and performance of the system.

关 键 词：供热系统 供水温度控制 SMITH预估补偿 积分分离PID PLC控制器 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]