Simulation Research on Variable Arguments PID Hybrid Control for VAV Air Conditioning System

A simplified model of air conditioned room was developed by a typical air conditioning system.Aimed at the feature of big time-lag and inertia,a fuzzy-immune PID controller is proposed.Simulation results compared with the traditional PID controller and fuzzy-immune PID controller prove that the method has many merits including small overshoot,fast response,good self-adaptability,high optimal efficiency,and obviously improving the control performances of the variable frequency air conditioning systems.