Early Detection of Rolling Bearing Defect by Demodulation of Vibration Signal Using Adapted Wavelet
| Autor: | Olivier Cousinard, Fabrice Bolaers, Xavier Chiementin, Lanto Rasolofondraibe |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Engineering
Bearing (mechanical) business.industry Mechanical Engineering Modal analysis Acoustics Second-generation wavelet transform Aerospace Engineering Early detection Signal law.invention Vibration Wavelet Mechanics of Materials law Automotive Engineering Demodulation General Materials Science business |
| Zdroj: | Journal of Vibration and Control. 14:1675-1690 |
| ISSN: | 1741-2986 1077-5463 |
| Popis: | Vibratory analysis allows us to interpret the fundamental conditions of rotating machines. This interpretation is useful in the diagnosis of defects. Many studies implement advanced processing tools for mechanical detection of defects in individual components. Among these processes, wavelet demodulation is a powerful tool for signal processing. This technique requires the use of a traditional wavelet, such as a Morlet wavelet, which is defined by two parameters: Decrease and frequency. However, this determination is hard to do. Moreover, the processing required is very expensive in computing time, which prevents instantaneous follow-up. This paper suggests a new form of wavelet, which is adapted to shock response, and a methodology for its use in which the parameters are determined automatically. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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