The Simulation in Heating Systems Based on Adaptive Fuzzy PID Controller

摘要

PID controller is the first development of the control strategy,because this controller has a simple control structure,adjusts easily in the practical,it is used widely in the industrial control But in the actual heating system,it is difficult to establish accurate mathematical model because of uncertainty,nonlinear .In the paper ,on the basis of theoretical analysis,according to the empirical data,the control system automatically products fuzzy control rule,adjusts the PID controller parameter,designs control coefficient,and tunes PID controller parameters KP,KI,KD scope of the domain on-line,thus improve control accuracy,reduce overshoot ,achieve superior to conventional PID control. Simulation results show that adaptive fuzzy PID control system superior to conventional PID control system.