Research of the Lifting Wavelet Arithmetic and Applied in Rotary Mechanic Fault Diagnosis

The lifting wavelet transform is completely based on the space-time area instead of relying on Fourier transform, so it can construct wavelet in non-shift area to achieve the separation of signal in different frequency bands. In this paper, the lifting scheme of wavelet and its multiphase expression...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 48; no. 1; pp. 696 - 700
Main Authors Zhang, S Q, He, N, Lv, J T, Xu, X H, Zang, X Y
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.10.2006
Subjects
Fault diagnosis
Fourier transforms
Frequencies
Hoisting
Physics
Roller bearings
Vibration analysis
Wavelet transforms
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Summary:The lifting wavelet transform is completely based on the space-time area instead of relying on Fourier transform, so it can construct wavelet in non-shift area to achieve the separation of signal in different frequency bands. In this paper, the lifting scheme of wavelet and its multiphase expression are analysed, and applied to fault diagnosis of gears rolling bearings and rotor rubbings. Simulation was accomplished based on the analysis of fault vibration signals. The results indicate that the lifting scheme of wavelet is effective to pick up fault characteristics.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/48/1/131