免疫内模控制及其在过热汽温系统的应用  

Immune internal model control and its application in superheated steam temperature system

作　　者：袁桂丽[1] 刘吉臻[1] 牛玉广[1] 

机构地区：[1]华北电力大学控制与计算机学院,北京102206

出　　处：《电力自动化设备》2010年第9期89-92,共4页Electric Power Automation Equipment

基　　金：科技部863计划项目(2007AA04Z163)~~

摘　　要：针对火电厂过热汽温系统采用传统PID控制效果较差的问题,设计免疫内模控制器,采用免疫反馈控制与内模控制相结合,有效缓解了内模固定滤波器时间常数的鲁棒性和快速性之间的矛盾,对参数变化有很好的自适应能力。将设计的控制器应用到过热汽温系统中,通过免疫内模控制器与内模控制器在给定阶跃响应、加入扰动阶跃信号、延时增加/减少5%、惯性时间常数增加/减少5%、比例增益增加/减少5%等情况下的仿真,结果表明,所设计的免疫内模控制器性能优于内模控制器。To improve the control effect,the controller combining internal model control and immune feedback control is applied,instead of traditional PID controller,to the superheated steam temperature system of power plant,which effectively mitigates the contradiction between the robustness and the rapidity of the fixed time constant of internal model filter and better adapts to the parameter change.The responses of immune internal model controller and internal model controller to following changes are simulated：step change of input signal,step change of disturbance,5 % increase or decrease of delay time,5 % increase or decrease of inertia time constant,and 5 % increase or decrease of proportional gain.The simulative results show that the performance of immune internal model controller is superior to that of internal model controller.

关 键 词：免疫控制 SMITH预估控制 内模控制 过热汽温 火电厂 

分 类 号：TM621[电气工程—电力系统及自动化] TP273[自动化与计算机技术—检测技术与自动化装置]