Application of predictive Fuzzy-PID in center air adjusting control system

The electric heating element is often used in center air adjusting system. It is installed in the end of air supply duct system and can improve the control precision of temperature by combining with other elements in center air adjusting system. The temperature control method of electric heating was presented, which adopted predictive Fuzzy-PID control algorithm and realized steady temperature control. The Smith predictor, Fuzzy controller and PID controller were integrated into the control method. The predictive Fuzzy-PID control to temperature in center air adjusting system was simulated in MATLAB. Its results indicate that the control method, whose control precision reaches ± 0.1°C, can improve the temperature stability and reduce the energy consumpting. The control method could be used in other similar instance with electric heating element.