變風量中央空調(VAV)的控制系統是樓宇自控的重要組成部分。變風量空調系統具有多變量、多回路藕合的特點，當多個控制回路同時工作時，各回路之間的相互禍合和相互干擾嚴重影響變風量空調系統的性能。解除或減小多回路之間的禍合是極為關鍵
和重要的，這也一直是VA、系統的難點問題。
關鍵詞變風量多變量狀態反饋解禍
Abstract Thec ontorlsy stemo fV AV(vairablea irvo lume)a irco nditioningsy stemi son eo fth em ostim portantpa rtso fbu ildingau tomaticco ntorl.Th e
VAVs ystemf eatuersof m ulti-variablean dc ouplingb etweenm ulti-contorllo ops.W hilem ultico ntorllo ops二workingto gether,th eyin terfeera ndin fluence
each other, and influence the performance of VAV system. Decreasing or eliminating the coupling among the multi-loops is very important. This is
alsoa d ificultpor blemi nV AVs ystem.T hes tates pacem odelof 4 in putsan d4 o utputsof V AVs ystemi se stabilshedin th isp aper.T hec ontorledp orcess
is changed into diagonal matrix through state feedback decoupling technology, so that VAV system is decoupled.
Keywords Variablea irv olume Multi-variable Statef eedback Decouplin