基于模糊自适应PID的聚丙烯模具温度控制仿真

摘要

在聚丙烯模具温度优化控制的研究中,模具温度是聚丙烯成型工艺的主要技术参数,对温度进行有效的控制是提高聚丙烯制品质量的关键,传统的温度控制中,由于工艺过程的复杂性,存在着温度突变等干扰因素,为解决上述问题,利用模糊自适应PID技术应用于聚丙烯模具温度的控制中,首先,深入地分析了模具温度在聚丙烯成型中的重要意义；其次,设计了聚丙烯模具成型温度模糊自适应PID控制系统,分别设计了模糊控制器的基本框架,对输入和输出进行模糊化操作；设计了模糊控制规则和相应的执行算法,同时确定了去模糊化方法；最后,进行了聚丙烯模具温度的控制仿真分析.仿真结果表明,上述控制技术能够有效地控制PP塑料模具温度,极大地提高了聚丙烯制品的质量.%Mold temperature is the main technical parameter of polypropylene molding process,and the temperature for effective control is the key to improve the quality of polypropylene products on polypropylene mold temperature optimal control study.The paper used fuzzy adaptive PID technology to control the polypropylene mold temperature.First,the significance of the mold temperature in polypropylene depth was analyzed.Secondly,the polypropylene mold of temperature fuzzy adaptive PID control system was designed,then the basic framework of the fuzzy controller was designed to input and output fuzzy design of fuzzy control rules and the corresponding execution algorithms.Finally,the simulation of the polypropylene mold temperature control was analysed.The simulation results show that the above-described control technique can effectively control the PP plastic mold temperature,which greatly improves the quality of the products of polypropylene.