锅炉汽包水位的变论域模糊PID控制

Variable Universe Fuzzy PID Control of Water Level in Boiler Drum

针对传统PID控制器参数不能动态调节和模糊控制比较粗糙的问题,在模糊PID控制的基础上,结合变论域设计了一种变论域模糊PID控制器。建立锅炉汽包水位的三冲量控制模型,并分别采用传统PID、模糊PID和变论域模糊PID对锅炉汽包水位进行仿真分析。结果表明:相比于其他两种控制方法,变论域模糊PID控制超调量小、响应速度快。

In view of the fact that traditional PID controller's parameters can not be regulated dynamically and the insufficient fuzzy control,and through basing on fuzzy PID control and considering variable universe,a variable universe fuzzy PID controller was designed,including the establishment of three-variable control model for water level in the boiler drum. Having traditional PID,fuzzy PID and variable universe fuzzy PID adopted to analyze the water level respectively shows that as compared to other two control methods,the variable universe fuzzy PID control has a smaller overshoot and faster response speed.