摘要
针对二甲苯精馏过程塔顶温度控制问题,研究了前馈补偿和串级PID协同作用下的控制方法,通过对现场数据辨识得到动态数学模型,利用Matlab验证了此方案的可行性,设计了基于SIEMENS S7-300二甲苯精馏塔顶温度控制系统。测试结果表明,系统动态性能得到有效改善且易于工程实现,为大滞后、多干扰系统提供了参考方案。
Aiming at the temperature control of xylene distillation tower top,the control method under the cooperative action of feedforward compensation and cascade PID was studied.The dynamic mathematical model was obtained by identifying the field data,and the feasibility of this scheme was verified by Matlab.A temperature control system for xylene distillation tower top based on SIEMENS S7-300 was designed.The test results show that the dynamic performance of the system is effectively improved and easy to be implemented,which provides a reference scheme for the system with large delay and multiple interference.
作者
田宠
桑胜利
张浩
曹玉波
TIAN Chong;SANG Shengli;ZHANG Hao;CAO Yubo(School of Information and Control Engineering,Jilin Institute of Chemical Technology,Jilin City 132022,China;Changchun Office,Hangzhou Hollysys Automation Co.,LTD,Changchun 130051,China)
出处
《吉林化工学院学报》
CAS
2023年第9期59-64,共6页
Journal of Jilin Institute of Chemical Technology
关键词
二甲苯精馏
前馈-串级
仿真
PLC
xylene distillation
feedforward-cascade
simulation
PLC
