Research on Fuzzy PD Current Controller for FDWRD

A fuzzy control scheme is proposed for the system of filling and draining off water of the rubber dam（FDWRD） which is a typical nonlinear, multi- variables, time- varying and strong coupling control system base on traditional PID control or model-based control methods can not meet its constant flow sufficient drainage control requirements, during to it couldn‘t be established accurate mathematical model. In a practical project, a fuzzy PD controller is designed for the constant current control of filling and draining off water of the rubber dam, combining with the traditional PID algorithm which is widely used in industrial process control, and achieved good control effect. This paper elaborates the control system of filling and draining off water of the rubber dam and the implementation process of the fuzzy PD controller, and then giving the actual control curve of constant current. Practice proves that the proposed control scheme is efficient and the system possesses good static, dynamic performance and certain robustness.