表面建筑材料吸放湿特性的辅助变量辨识

建立了以材料表面空气相对湿度为输入，材料湿容量为输出的建筑围护结构材料动态湿特性单输入单输出辨识数学模型，得到相应的Z传递 函数模型。建造了建筑围护结构材料的辨识试验系统。采用辅助变量辨识方法辨识得到单输入单输出差分方程和Z传递函数。并比较了最小二乘辨识法和辅助变量辨识法的辨识结果。结果表明，辅助变量辨识法辨识精度有所提高，系统阶降低。

Instrumental Variable Identification of Absorption and Desorption of Building Materials Surface

Through establishing single input single output identification mathematics model for the dynamic moisture performance of building envelopes by materials surface's air relative humidity input and materials moisture capacity ouput,the interrelation Z transfer function model was gained.The identification test system was built for the dynamic moisture performance of building envelopes.Through instrumental variable identification method,the single input single output difference equations and the Z transfer function were gotten.Comparing the least square estimation and the instrumental variable identification method,the identification result shows that the indentification precision is higher and the mode order is lower by the later method.