Design and Realization of Fuzzy Self-tuning PID Water Temperature Controller Based on PLC

Abstract

Temperature Control System has the characteristics of nonlinear, strong delay and inertia, and it is difficult to build the accurate mathematical models of the system. Conventional PID controller can not achieve precise control because its control parameters are fixed, in order to gain better control effect, Fuzzy control technology is introduced based on the traditional PID control, This method combines fuzzy control theory which have the feature of better dynamic performance with the advantages of the traditional PID control method which has a high stable precision and strong robustness. Finally, Fuzzy Self-tuning PID water temperature control system design is realized by PLC, The experimental results show that the Fuzzy Self-tuning PID temperature controller has better control performance than the traditional PID controller.