Adaptive Fuzzy Algorithm to Control the Pump Inlet Pressure

The pump inlet pressure is controlled using PID controller. Since the process is non-linear, the performance of the pump inlet pressure control could not be achieved in a straight line as per the requirement. Instead, the pump inlet pressure was controlled with saw tooth pattern during a rapid change in pump flow rate. In case of conventional PID controller, when controller gain (Kp) is very high, there will be a faster rise time leading to an overshoot. If it is very low, the transient dynamic behaviour of the system will be slow. Due to the above limitation, achieving best control was not possible for the non-linear process using conventional PID algorithm. Hence it is proposed to develop an Adaptive Fuzzy control algorithm, which will accept inputs as an error and also rate of change of process variable, and calculate the change in output based on the fuzzy control algorithm. In this project, Adaptive Fuzzy control algorithm is developed and implemented to control the pump inlet pressure to the required value.