火电厂锅炉主汽温模糊免疫PID-Smith预估控制

Main Stream Temperature Control System in Fossil Fired Power Station Based on Fuzzy Immune PID-Smith Controller

针对火电厂锅炉主汽温控制对象的大纯滞后、模型不确定等特性,设计了模糊免疫PID-Smith预估控制系统,并进行了仿真研究。仿真结果表明所设计的控制系统比常规Smith预估控制系统具有较强鲁棒性,系统具有良好的适应能力,适用于缺乏精确数学模型且参数变化的大纯滞后工业过程。

In order to overcome the large delay and uncertainty of the main stream temperature object in fossil fired power station, a control system based on Fuzzy immune PID-Smith controller is proposed. The simulation experiments have been made. It is validated that the robustness of this control system is superiors to general Smith predicting control system. Owing to the good fitness of this control method, it can be used in large delay industry process of uncertain model and variational parameters.