PTFE半间歇聚合反应过程模型及其自抗扰温度控制

来源期刊:中南大学学报(自然科学版)2020年第6期

论文作者:童不凡 金晓明 阮骁骏 王家栋

文章页码:1534 - 1542

关键词:聚四氟乙烯(PTFE);半间歇聚合反应;自抗扰控制

Key words:polytetrafluoroethylene(PTFE); semi-batch polymerization reactor; active disturbance rejection control

摘    要:基于聚合反应动力学和热力学仿真模拟,建立聚四氟乙烯(PTFE)半间歇聚合反应过程动态数学模型,设计反应温度自抗扰控制器,并根据实际过程快速收敛和期望闭环响应要求配置控制器和观测器参数,开展PTFE反应过程温度控制仿真研究。研究结果表明:本文建立的PTFE反应过程数学模型能准确模拟实际PTFE聚合反应过程的特性,所设计的自抗扰控制器能有效实现PTFE半间歇聚合反应过程的温度控制,并能适应外部噪声扰动干扰以及不同批次生产要求,具有控制精度高和鲁棒性强等优点。

Abstract: Based on the reaction kinetics and thermodynamic simulation, the mathematical model of polytetrafluoroethylene(PTFE) polymerization reactor process was established, and the corresponding auto disturbance rejection controller(ADRC) was designed to achieve the temperature control, in which the controller and observer parameters were designed by the desired closed loop response and the convergence speed of actual process. The results show that the proposed mathematical model can effectively capture the changes in temperature and materials during actual production process of PTFE. The designed active disturbance controller can effectively achieve the temperature control of the semi-batch polymerization process of PTFE and can adapt to external noise disturbance interference and different batch production requirements with excellent control precision and anti-disturbance ability.

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