Identification of modal parameters using the wavelet transform

被引：163
|
作者：
Lardies, J [1 ]
Gouttebroze, S [1 ]
机构：
[1] Univ Franche Comte, Appl Mech Lab, UMR 6604, F-25000 Besancon, France
来源：
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES | 2002年 / 44卷 / 11期
关键词：
wavelet transform; modal parameters; ambient vibration; random decrement technique;
D O I：
10.1016/S0020-7403(02)00175-3
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The wavelet transform is used as a time-frequency representation for the determination of modal parameters such as natural frequencies, damping ratios and mode shapes of a. vibrating system. It is shown that using a particular form of the son wavelet function, results are improved compared to those obtained with the traditionally Morlet wavelet function. The accuracy of, this new technique is confirmed by applying it to a numerical example and to ambient vibration measurements of a tower excited by wind. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：2263 / 2283
页数：21
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