Research on Air Conditioning System of Subway Station Based on Fuzzy PID Control

Because the subway station has the characteristics of large area, wide space, complicated regional function and large passenger mobility between regions, the controlled objects in the subway station environment are characterized by time-varying, randomness, non-linearity and large lag. As the PID control parameters are fixed throughout the control, for the highly complex subway station environment, the PID control becomes helpless, it is difficult to achieve the best. There fore, a fuzzy PID control method is proposed. This method combines the fuzzy control and the PID control technology to establish the fuzzy PID controller, which can effectively realize the reasonable control of the ambient temperature of the subway station.