Abstract:

A mixed-gas stabilized-pressure system based on a control valve was designed. The model of the mixedgas stabilizedpressure system was built  and the fuzzy PID controller for the stabilizedpressure system was designed. Based on the model, the control performance simulation analyses of the stabilizedpressure system with the traditional PID controller and the fuzzy PID controller were carried out. Simulation results showed that the fuzzy PID controller can provide  better performance than the traditional PID controller.

Key words:  control valve, stabilized pressure technology, fuzzy PID, electro-hydraulic system