Research On Intelligent Control For The Ventilation And Air Conditioning System In The Public Area Of Subway Station

With the rapid development of China’s subway, the increase in traffic andother factors, which make the subway station environment load increase, and thetemperature of subway station will rise to the intolerable degree for passengers.The ventilation and air conditioning system in the public area of subwa y station isa complex system possessing a problem by once setting parameters of PID which isdifficult to ensure excellent control effect.Therefore this thesis proposed an algorithm to adopt parameter tuning thatcould adjust the PID parameters on real time to ensure good quality of controlsystem. It combined adopt fuzzy logic control with conventional PID controlalgorithm, with the help of fuzzy tuning of PID parameters to change the controleffect on-line. Then this thesis make the algorithm achieve to the PLC program forengineering and collect the data from the project site and prove the controlperformance for it. By engineering, the adaptive fuzzy PID controller could getbetter in control effect, higher in control accuracy, stronger in robustness thanbefore.