摘要
为求得稳定、低阶、高精度的围护结构动态负荷合成传递函数模型 ,提出了基于系统辨识理论的传递函数模型合成方法 ,通过对有限个传递函数叠加成的线性系统进行最小二乘法辨识 ,获得该系统的等价传递函数模型。对 6个 1 0阶以上的传递函数进行合成 ,得到 5阶的合成传递函数 ,并采用阶跃扰量和正弦波扰量检验其稳定性和精度 。
In order to get a stable, low order and acc ur ate composite z transfer function of dynamic load of building envelope, develop s a method of z transfer function composition on a basis of the system indentif ication theory. The z transfer function equivalent to linear superposition syst em of limited z transfer functions could be derived through the least square ap proximation procedure. A five order composite z transfer function is obtained f rom six 10 or higher order z transfer functions with the method. The stability and accuracy test results show good effects with checkout by step and sine wave .
出处
《暖通空调》
北大核心
2002年第2期85-88,共4页
Heating Ventilating & Air Conditioning
基金
国家重点基础研究发展规划项目资助 (No .G2 0 0 0 2 63 0 9"高效节能的关键科学问题")
关键词
围护结构
传递函数
合成
系统辨识
动态负荷
building envelope, z transfer function, compo sition, system identification
