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 KP,KI,KDparameters 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.