Fuzzy pressure control of hydraulic system with gear pump driven by variable speed induction electro-motor

The fuzzy logic PID controller was employed to control the pressure of a hydraulic system with external gear pump driven by an AC electromotor controlled by an FCC power supply unit. To simulate a real life environment, the experiments were conducted so that the pump was first used to supply the hydraulic system with one consumer and then the second consumer was suddenly added. The robustness of the fuzzy logic controller was demonstrated by appropriate dynamic behavior using the same controller but different lengths of the pipe line.