基于变论域模糊PID的锅炉汽包水位控制系统仿真研究

Simulation research of the control system of boiler drum level based on variable universe fuzzy PID

汽包水位是锅炉正常运行的主要指标,也是锅炉能提供符合质量要求的蒸汽负荷的必要条件.通过对工业锅炉汽包水位控制的动态分析,确定了三冲量水位控制方案,采用一种变论域的混合模糊PID控制器进行控制.仿真结果表明,该控制器的控制效果优于传统PID与模糊PID,在扰动较大时更能体现出优越性.

Drum water level is an important parameter of boilerˊs normal operation and it is also a necessary condition of the boiler that can provide the qualified steam load. Through analyzing the dynamic feature of industrial boiler,the control scheme of three impulses is adopted. A kind of variable universe hybrid fuzzy PID controller is used to control. The simulation results show that this control-ler is more excellent than conventional PID controller and fuzzy PID controller. It has superiority in the big disturbance especially.