Enhancements to the continuous wavelet transform for damping identifications on short signals

被引：59

作者：

Boltezar, M ^{[1
]}

Slavic, J ^{[1
]}

机构：

[1] Univ Ljubljana, Fac Mech Engn, Ljubljana, Slovenia

来源：

MECHANICAL SYSTEMS AND SIGNAL PROCESSING | 2004年 / 18卷 / 05期

关键词：

wavelet transform; damping; edge-effect;

D O I：

10.1016/j.ymssp.2004.01.004

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The edge-effect of the wavelet transform can present a serious limitation to the identification of damping. In an attempt to overcome the problem posed by the edge-effect, this paper presents three new methods that are incorporated into the definition of the continuous wavelet transform: the reflected-window method, the equal-window-area method and the adaptive-wavelet function method. The effectiveness of these methods was tested on experimental data. It was found that with these methods the same rate of reliability could be achieved with a signal that was approximately three times shorter than the signal required by the classical CWT approach to damping identification. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：1065 / 1076

页数：12

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