基于EMD算法的建筑墙体夏季室外计算逐时综合温度谐波研究

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英文篇名：Research on Outdoor Design Hourly Comprehensive Temperature Harmonic of Building Wall in Summer Based on EMD Algorithm 作者：王翠红 ; 王晓璐 ; 鞠全勇 ; 吴敏 ; 周洪 ; 杨建林 英文作者：WANG Cuihong;WANG Xiaolu;JU Quanyong;WU Min;ZHOU Hong;YANG Jianlin;School of Electrical Engineering,Jingling Institute of Technology;Nanjing University of Aeronautics and Astronautics,College of Aerospace Engineering; 关键词：节能建筑墙体 ; 夏季传热 ; 室外计算逐时综合温度 ; 经验模态分解 ; 主导模态函数 英文关键词：energy-saving building wall;;summer heat transfer;;outdoor design hourly comprehensive temperature harmonic;;EMD;;dominant IMFs 中文刊名：AHJG 英文刊名：Journal of Anhui Jianzhu University 机构：金陵科技学院机电工程学院;南京航空航天大学航空宇航学院; 出版日期：2019-06-15 出版单位：安徽建筑大学学报 年：2019 期：v.27;No.132 基金：江苏省自然科学基金面上研究项目(BK20151099) 语种：中文; 页：AHJG201903008 页数：6 CN：03 ISSN：34-1325/TU 分类号：42-47

摘要

在国内率先应用经验模态分解算法进行夏季建筑墙体室外计算逐时综合温度谐波研究。以节能建筑墙体夏季东、西两个方向实测温度谐波数据为样本,采用经验模态分解算法获得系列经验模态函数。以能量分析为依据,筛选出能量权重较大的经验模态函数作为主导模态函数,与原始信号相比有很高的拟合精度,远优于傅里叶级数分解结果。由计算结果知,主导模态函数具有24小时为周期的简谐波变化特点,不同朝向室外计算逐时综合温度主导模态函数区别明显,同时经验模态分解算法可有效地滤除测量信号中的随机噪声影响。
        The outdoor design hourly comprehensive temperature harmonic of building wall in summer based on the Empirical Mode Decomposition(EMD) algorithm is applied earlier in China. East and west temperature datas of the energy-saving building wall are measured in summer,then use the EMD algorithm to obtain a series of Intrinsic Mode Function(IMF).IMFs with the larger energy weight are selected as the dominant IMFs based on energy analysis. Compared with the original signal,it has a high fitting accuracy,and the result is far better than the Fourier series decomposition. The result shows that the dominant IMFs have the characteristics of simple harmonic variation with a 24-hour period,and the dominant IMFs of different directions is obviously different. Meanwhile,EMD algorithm can effectively filter out random noise in the measured signal.

引文

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