变风量空调系统恒温解耦控制优化  

Decoupling Control Optimization of Constant Temperature Variable Air Volume Air-Conditioning System

作　　者：张会[1] 付东翔[1] 王亚刚[1] 

机构地区：[1]上海理工大学光电工程与计算机学院,上海200093

出　　处：《计算机仿真》2014年第10期255-258,432,共5页Computer Simulation

摘　　要：在室内恒温控制问题的研究中,变风量空调系统的房间送风量、冷冻水流量和风机转速三个输入变量与房间温度、送风温度和静压三个输出变量之间存在着不同程度的耦合关系,每个房间的温度控制会受到不同程度的干扰,严重时会影响到整个系统的稳定性。为解决上述问题,根据变风量空调系统的房间、表冷器、风机等各个子系统模型,通过寻找一个合适的开环传递函数矩阵,实现对系统的解耦控制,通过使解耦矩阵的对角元素为1,得到简化的解耦矩阵。比通常利用对角化方法和状态反馈矩阵方法直接求得的解耦矩阵要简单。运行空调实验结果表明控制回路之间干扰不明显,解耦控制效果良好。On the research of the indoor constant temperature control, there are different degrees of coupling rela- tionships between the inputs （ room air, chilled water flow and fan speed） and the outputs （ room temperature, supply air temperature and static pressure） of multivariable air volume air conditioning system（ VAV）, and the temperature control in every room can be disturbed by those, even the stability of the whole system can he affected when it is seri- ous. To solve the above problems, according to the rooms, surface cooler, fans and other subsystem models we found a suitable open - loop transfer function matrix, and to achieve the decoupling control of system and make the all diag- onal elements of decoupling matrix to be one, we simplified the decoupling matrix. The decoupling matrix is simpler than the decoupling matrix by using state feedback matrix method and diagonalizable method directly obtained. Ex- perimental results show that the interference between the control circuits is not obvious, and the deeoupling control effect is good.

关 键 词：变风量空调系统 解耦控制 简化解耦 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]