Envelope analysis based on the combination of Morlet wavelet and Kurtogram

被引：0

作者：

Liang, Yu ^{[1
]}

Yu, Guo ^{[1
]}

Wu, Chuanhui ^{[1
]}

Gao, Yan ^{[1
]}

机构：

[1] Kunming Univ Sci & Technol, Kunming 650093, Peoples R China

来源：

MECHATRONICS AND INTELLIGENT MATERIALS II, PTS 1-6 | 2012年 / 490-495卷

关键词：

Rolling Element Bearing; Spectral Kurtosis; Wavelet; Envelope Analysis; SPECTRAL KURTOSIS;

D O I：

10.4028/www.scientific.net/AMR.490-495.305

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Envelope analysis based on the combination of complex Morlet wavelet and Kurtogram have advantages of automatic calculation of the center frequency and bandwidth of required band-pass filter. However, there are some drawbacks in the traditional algorithm, which include that the filter bandwidth is not -3dB bandwidth and the analysis frequency band covered by the filter-banks are inconsistent at different levels. A new algorithm is introduced in this paper. Through it, both optimal center frequency and bandwidth of band-pass filter in the envelop analysis can be obtained adaptively. Meanwhile, it ensures that the filters in the filter-banks are overlapped at the point of -3dB bandwidth and the consistency of frequency band that the filter-banks covered.

引用

页码：305 / 308

页数：4

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