木塑复合材料挤出温度的鲁棒H∞控制策略  

Robust H∞ Control Strategy for Extrusion Temperature of Wood-Plastic Composites

作　　者：蒋艳芳[1] JIANG Yan-fang(Guangzhou City Construction College,Guangzhou 510900,China)

机构地区：[1]广州城建职业学院,广东广州510900

出　　处：《塑料科技》2020年第7期122-125,共4页Plastics Science and Technology

基　　金：广东省高等职业教育建筑工程技术品牌专业建设项目(2016gzpp016)。

摘　　要：采用鲁棒控制理论设计了H_∞控制器对WPC挤出机的温度系统进行控制研究。忽略模型参数和结构的不确定性,将挤出温度系统简化为具有纯滞后环节的二阶系统,针对该系统的状态方程计算控制律,构造具有鲁棒性的H_∞控制器。在仿真实验中加入了传输延时和白噪声扰动以模拟实际工业过程,并与常规PID控制器进行对比。仿真实验结果表明:基于H_∞控制器的挤出温度控制系统抗扰能力强,具有理想的系统动态响应性能以及高控制精度。The H_∞controller is designed using robust control theory to control the temperature system of WPC extruder.Ignoring the uncertainties of the model parameters and structure,the extrusion temperature system is simplified to a secondorder system with pure hysteresis links.The control law is calculated for the state equation of the system,and a robust H_∞controller is constructed.In the simulation experiment,the transmission delay and white noise disturbance are added to simulate the actual industrial process,and compared with the conventional PID controller.Simulation experiment results show that the extrusion temperature control system based on H_∞controller has strong anti-interference ability,and has ideal system dynamic response performance and high control accuracy.

关 键 词：木塑复合材料 温度控制 鲁棒 H∞控制 

分 类 号：TQ321.5[化学工程—合成树脂塑料工业]