Adaptive Fuzzy PID controller´s application in constant pressure water supply system

By introduction multi-level control of pumps and variable-frequency speed governing of constant pressure water supply (CPWS), this paper provided a method to prove the precision and reliability of control system of the “Constant pressure water supply with changing load in large range” system. A adaptive FUZZY-PID controller is designed to against the characteristics like multi-parameters, nonlinear, big delay, etc. of CPWS. The controller can effectively adjust the water pressure of the system. The System has strong robustness and good stability by applying the fuzzy controller. The practical operation result has verified the validity and feasibility of the methods proposed