✦ LIBER ✦
GEAR VIBRATION ANALYSIS BY B-SPLINE WAVELET-BASED LINEAR WAVELET TRANSFORM
✍ Scribed by S.T. Lin; P.D. McFadden
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 156 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0888-3270
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✦ Synopsis
The signature of the vibration generated by a fault on a gear is carried by the sidebands around the dominant tooth meshing harmonic. This paper applies the linear wavelet transform based on B-spline wavelets to reveal the spectrogram of the sidebands exactly. The proposed wavelet transform uses 1/a for unit normalisation instead of 1/za for energy normalisation, and can be computed easily and efficiently by the fast Fourier transform. An experimental example demonstrates that the development of a crack in a gear can be monitored simply by examining the spectrograms over a period of time.