SET Proceedings 2978-4387 Caravel Press 10.65582/set.2005.029 2005.029 Fuzzy Control Used in VAV System CaiBo LiDeying LiuWeifu Beijing Institute of Civil Engineering and Architecture, Beijing, China 23092005 4 1 978-7-112-07718-2 134 137 23 September 2005 © 2005 Copyright WSSET 2005

Normal PID controller can’t online adjust parameters, when object exists structure nonlinearity, parameter time-variation or model indeterminacy, it is more difficult in adjusting parameters, and optimal parameters are inclined to drift. This article uses VAV rooms as research objects, adopting fuzzy control and PID control to compose fuzzy self-adjustment PID controller, and makes use of parameters of PID controller with fuzzy controller online adjusting to process large numbers of emulate research, and further using in fact control.

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