Fuzzy PID Controller Design of Air Handling Unit for Constant Temperature and Humidity Air-Conditioning

摘要

Because of the strong couple of temperature and humidity in air handing unit (AHU), the control of AHU is more difficult. In this paper, the coupling effect of temperature and humidity in the AHU is analyzed. Fuzzy PID controller is used to control the temperature and humidity of the mixed air in the process of cooling and dehumidifying, heating, and possible humidifying, and also to compensate temperature drop caused by isenthalpic cooling humidification process. Simulation results show that the effect of the controller is remarkable.