Time-energy density analysis based on wavelet transform

被引：35

作者：

Cheng, JS ^{[1
]}

Yu, DJ ^{[1
]}

Yang, Y ^{[1
]}

机构：

[1] Hunan Univ, Coll Mech & Automot Engn, Changsha 410082, Peoples R China

来源：

NDT & E INTERNATIONAL | 2005年 / 38卷 / 07期

基金：

中国国家自然科学基金;

关键词：

wavelet transform; time-energy density; roller bearing; fault characteristic;

D O I：

10.1016/j.ndteint.2005.02.002

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Energy is an important physical variable in signal analysis. The distribution of energy with the change of time and frequency can show the characteristics of a signal. A time-energy density analysis approach based on wavelet transform is proposed in this paper. This method can analyze the energy distribution of signal with the change of time in different frequency bands. Simulation and practical application of the proposed method to roller bearing with faults show that the time-energy density analysis approach can extract the fault characteristics from vibration signal efficiently. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：569 / 572

页数：4

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