Application of Self-adaptive Fuzzy PID in Temperature Control System

As temperature system has the characteristics of non-linearity,large inertia and time variability,normal PID and normal fuzzy control can not meet the requirement of precise molding system.A self-adaptive fuzzy control in large area and PID precision output in small area,which adjusts PID parameters based on deviation and the deviation change.The structure and principle of self-adaptive fuzzy PID controller are analysed,and Matlab/ Simulink and fuzzy logic toolbox are simulated,the results of simulation show that the self-adaptive fuzzy controller posses the flexible and adaptability advantages of fuzzy control and the precise character of PID control.It improves the control effect on temperature system.