EXTRACTION OF SHOCK CHARACTER FROM HARMONIC SIGNAL BASED ON WAVELET

Yang Jianguo; Xia Songbo; Xu Genfa

Chinese

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EXTRACTION OF SHOCK CHARACTER FROM HARMONIC SIGNAL BASED ON WAVELET

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- EXTRACTION OF SHOCK CHARACTER FROM HARMONIC SIGNAL BASED ON WAVELET
- Vol. 14, Issue 4, (1999)
- 作者机构：
  
  哈尔滨工业大学
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：1999
- 稿件说明：
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Yang Jianguo, Xia Songbo, Xu Genfa. EXTRACTION OF SHOCK CHARACTER FROM HARMONIC SIGNAL BASED ON WAVELET[J]. 1999, 14(4).
DOI：

Yang Jianguo, Xia Songbo, Xu Genfa. EXTRACTION OF SHOCK CHARACTER FROM HARMONIC SIGNAL BASED ON WAVELET[J]. 1999, 14(4). DOI：

摘要

Abstract

Wavelet transformation has very good characteristics of time-frequency analysis

and is very effective to extract the small instantaneous shock from harmonic signal.An improved fast algorithm is proposed to avoid frequency aliasing

which exists in the Mallat algorithm.The incipient fault character of the bearing in one aeroengine is extracted successfully by the wavelet transformations.

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