Study on stability of wide flow based on fuzzy-PID self-organizing control

The stability of automatic sub-output control system in long-distance pipelines has an important significance to the operational safety. For the PID control parameter of the output control system set difficultly and the problem about the unstable sub-output pressure and flow in small flow, an self-organizing PID parameter controller which is based on the fuzzy control theory has been designed. the controller can adjust the K_P,K_I,K_D parameters in time according to the deviation and deviation´s rate of change. It has improved that the control if of excellent dynamic property and stable-state property which achieve better output controlling results in natural gas output system. There are practical significance and theoretical reference for the improvement of industrial control system dynamic behavior.