基于EMD和小波分析的建筑结构损伤检测探讨  

Structural Damage Detection Based on EMD Method and Wavelet Analysis

作　　者：李合龙[1] 

机构地区：[1]中山大学科学计算与计算机应用系,广东广州510275

出　　处：《中山大学学报（自然科学版）》2005年第6期20-23,共4页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家自然科学基金资助项目(60475042)

摘　　要：采用经验模式分解(EMD)与小波分析相结合的方法探讨结构响应数据信号,进行建筑结构损伤检测诊断。与直接对原信号进行小波变换相比较,该方法能够更好地辨识出破损的时间局部特征信息。数值模拟和对建筑结构响应信号分析论证了该方法的有效性和实用性。The use of empirical mode decomposition （EMD） method and wavelet analysis in combination is explored for the detection of changes in the structural response data from structural damage diagnosis. The combination of EMD method and continuous wavelet transform can be used to identify the time more clearly at which structural damage occurs than by using the wavelet transform method alone. The numerical simulation and the analysis of the response signal data from the shear building show that this method is effective and practical.

关 键 词：EMD 连续小波变换 损伤检测 瞬时频率 

分 类 号：TN713[电子电信—电路与系统]