过热汽温的改进型Smith预估复合模糊控制  

Improved Smith Predictor and Composited Fuzzy Control of Superheater Steam Temperature

作　　者：孙宇贞[1,2] 

机构地区：[1]上海电力学院自动化工程学院,上海200090 [2]同济大学电子与信息工程学院,上海201804

出　　处：《上海电力学院学报》2014年第3期265-268,共4页Journal of Shanghai University of Electric Power

摘　　要：针对过热汽温对象的非线性特性,设计了改进型Smith预估复合模糊控制算法.采用模糊与PID控制相结合的复合算法,可以有效改善系统的动态特性和适应性;采用一类改进型Smith预估算法,克服了过热汽温对象的大迟延特性.仿真结果表明,所设计的控制算法具有更强的负荷适应能力,系统的动态特性有了较大改善.According to the non-linear of superheater steam temperature object,the improved Smith predictor and composite fuzzy control algorithm is designed by using control strategy composited fuzzy logic algorithm and PID controller, which can improve the dynamic feature and adaptability of the system. Considering the Smith predictor relying on model, the improved Smith predictor is used to compensate large time-delay feature of superheater steam temperature. The simulation result shows that the control strategy has better load adapability and dynamic characteristic.

关 键 词：改进型Smith预估器 复合模糊PID算法 过热器汽温 大迟延 

分 类 号：TK323[动力工程及工程热物理—热能工程] TM621.6[电气工程—电力系统及自动化]