聚丙烯聚合反应釜新型控制策略及控制算法

Polypropylene polymerization reactor model control strategy and control algorithm

聚合反应是聚丙烯生产的核心,整个聚合反应过程在聚合釜内完成。具有多变量强耦合、非线性严重、动态特性复杂等特性,数学模型很难建立,并且随着反应的进行对象动态特性发生明显变化。该系统采用常规控制策略很难奏效。本文在对聚合釜动态特性分析的基础上,提出了一种新型控制策略和控制算法-复合型智能控制系统,代替原本的串级控制系统,并将模糊控制算法应用其中,以确保动态响应和稳态精度。模拟运行表明,改进后系统具有很好的鲁棒性及稳定性。

The polymerization is the core of the production of polypropylene, throughout the polymerization process is completed in the polymerization reactor. Multivariable strong coupling nonlinear serious and complex characteristics of the dynamic characteristics of the mathematical model is not only difficult to establish, and with the dynamic characteristics of object-chemical reaction changed significantly. The system uses a conventional control strategy is difficult to work. Based on the dynamic characteristics of the polymerization reactor analysis, a novel control strategy and control algorithm. The use of a complex control system instead of the original cascade control system, a controller using fuzzy control algorithm to ensure that the dynamic response and steady state accuracy. Actual operating results show that the improved system has good robustness and stability.