模糊PID控制器在浸出车间石蜡加热器温度闭环控制中的应用  

Application of fuzzy PID controller in temperature closed-loop control of paraffin heater in leaching workshop

作　　者：闫茂里 李肖 王伟[2] 刘宝友 李庆卓[3] 李昌俊 YAN Maoli;LI Xiao;WANG Wei;LIU Baoyou;LI Qingzhuo;LI Changjun(Shandong Chemsta Machinery Manufacturing Co.,Ltd.,Jining 272000 handong,China;Jining Machinery Design and Research Institute,Jining 272000,Shandong,China;Laser Research Institute of Shandong Academy of Sciences,Jining 272000,handong,China)

机构地区：[1]山东凯斯达机械制造有限公司,山东济宁272000 [2]济宁市机械设计研究院,山东济宁272000 [3]山东省科学院激光研究所,山东济宁272000

出　　处：《中国油脂》2022年第7期98-102,120,共6页China Oils and Fats

基　　金：山东省重点研发计划(重大科技创新工程)项目(2021CXGC010808);济宁市重点研发计划项目(2021KJH2022)。

摘　　要：石蜡加热器是浸出车间石蜡尾气回收工艺中的重要设备,石蜡加热器温度闭环系统是典型的非线性、时变、不确定性系统,难以建立精确的数学模型。为提高石蜡加热器电动调节阀温度闭环控制效果,以检测石蜡加热器的温度偏差(e)和温度偏差变化率(e_(c))为输入,模糊PID控制器的K_(P)、K_(I)、K_(D)为输出,构造了二输入三输出的模糊PID控制器。以西门子S7-300 PLC为下位机,WINCC组态软件为上位机,采用STEP 7软件编写模糊PID控制的算法程序,并将程序下载到S7-300 PLC存储卡中,利用S7-300 PLC对电动调节阀开度进行调节,从而实现石蜡加热器温度闭环控制。模糊PID控制器应用于浸出车间石蜡加热器温度闭环控制系统可以减少系统超调量,具有响应速度快、稳定性高等优点,提高了石蜡加热器温度闭环控制系统的运行效率。Paraffin heater is an important equipment of paraffin vent gas recovery process in leaching workshop. The temperature closed-loop system of paraffin heater is a typical nonlinear, time-varying and uncertain system, which is difficult to establish an accurate mathematical model. In order to improve the temperature closed-loop control effect of electric regulating valve of paraffin heater, taking the temperature deviation e and temperature deviation change rate eof paraffin heater as inputs and K_(P)、K_(I) and K_(D) of fuzzy PID controller as outputs, a two input three output fuzzy PID controller was constructed. Taking Siemens S7-300 PLC as the lower computer and WINCC configuration software as the upper computer, the algorithm program of fuzzy PID control was compiled with STEP 7 software, and the program was downloaded to S7-300 PLC memory card. S7-300 PLC was used to adjust the opening of electric regulating valve, so as to realize the temperature closed-loop control of paraffin heater. The fuzzy PID controller applied to the temperature closed-loop control system of paraffin heater in leaching workshop can reduce the overshoot of the system, and has the advantages of fast response speed and high stability, thus improving the operating efficiency of the temperature closed-loop control system of paraffin heater.

关 键 词：模糊控制 PID PLC WINCC 石蜡加热器 

分 类 号：TP273.4[自动化与计算机技术—检测技术与自动化装置] TQ647[自动化与计算机技术—控制科学与工程]