状态反馈解耦技术在变风量空调系统中的应用

Application of State Feedback Decoupling Technology in Variable Air Volume Air Conditioning System of Building Automatic Control

变风量中央空调 (VAV)的控制系统是楼宇自控的重要组成部分。变风量空调系统具有多变量、多回路耦合的特点 ,当多个控制回路同时工作时 ,各回路之间的相互耦合和相互干扰严重影响变风量空调系统的性能。解除或减小多回路之间的耦合是极为关键和重要的 ,这也一直是VAV系统的难点问题。

The control system of VAV(variable air volume) air conditioning system is one of the most important parts of building automatic control. The VAV system features of multi-variable and coupling between multi-control loops. While multi control loops are working together, they interfere and influence each other, and influence the performance of VAV system. Decreasing or eliminating the coupling among the multi-loops is very important. This is also a difficult problem in VAV system. The state space model of 4 inputs and 4 outputs of VAV system is established in this paper. The controlled process is changed into diagonal matrix through state feedback decoupling technology, so that VAV system is decoupled.