基于PCS7的聚合反应器温度复合控制系统设计

Polymer Reactor Temperature Compound Control System Design Based on PCS7

针对聚合反应器温度存在的非线性、滞后性、耦合性等问题,并在对聚合物反应工艺流程、控制需求以及控制对象特性研究分析的基础上,设计了一种模糊PID控制与冷热水变比例多阀位开度控制的双模式分段温度复合控制方法,通过PCS7过程控制系统提供的结构化语言SCL编写控制器模块,连续功能控制图CFC搭建温度系统控制回路,顺序功能图SFC设定控制流程,结合高级多功能过程与控制仿真设备(SMPT-1000)实现了控制方案,并与传统PID的温度控制效果进行对比;经试验测试结果表明该复合控制方案比传统PID控制超调量低,具有更优越的稳态性能和更快的响应速度以及较高的能量利用效率,提高了反应器温度控制性能。

Aiming at the problems of non-linearity,hysteresis,and coupling of polymerization reactor temperature,and based on the research and analysis of polymer reaction process flow,control requirements,and control object characteristics,a fuzzy PID control and cold and hot water were used.Multi-valve opening control of variable ratio dual-mode segmented temperature compound control method,through the PCS7process control system to provide a structured language SCL programming controller module,continuous function control chart CFC temperature control system to build the control loop,SFC set up the sequence diagram The control process was set up,and the control program was implemented in combination with the advanced multi-function process and control simulation device(SMPT-1000),and compared with the traditional PID temperature control effect.The experimental test results show that the composite control scheme has lower overshoot than the traditional PID control.It has superior steady state performance,faster response speed and higher energy utilization efficiency,and improves the reactor temperature control performance.