Wavelet Based Demodulation of Vibration Signals Generated by Defects in Rolling Element Bearings
Vibration signals resulting from roller bearing defects, present a rich content of physical information, the appropriate analysis of which can lead to the clear identification of the nature of the fault. The envelope detection or demodulation methods have been established as the dominant analysis me...
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| Format: | Article |
| Language: | English |
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Wiley
2002-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2002/592436 |
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| author | C.T. Yiakopoulos I.A. Antoniadis |
| author_facet | C.T. Yiakopoulos I.A. Antoniadis |
| author_sort | C.T. Yiakopoulos |
| collection | DOAJ |
| description | Vibration signals resulting from roller bearing defects, present a rich content of physical information, the appropriate analysis of which can lead to the clear identification of the nature of the fault. The envelope detection or demodulation methods have been established as the dominant analysis methods for this purpose, since they can separate the useful part of the signal from its redundant contents. The paper proposes a new effective demodulation method, based on the wavelet transform. The method fully exploits the underlying physical concepts of the modulation mechanism, present in the vibration response of faulty bearings, using the excellent time-frequency localization properties of the wavelet analysis. The choice of the specific wavelet family is marginal to their overall effect, while the necessary number of wavelet levels is quite limited. Experimental results and industrial measurements for three different types of bearing faults confirm the validity of the overall approach. |
| format | Article |
| id | doaj-art-385552e31d474d10acfdc9e0af672ac8 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2002-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-385552e31d474d10acfdc9e0af672ac82025-02-03T01:07:53ZengWileyShock and Vibration1070-96221875-92032002-01-019629330610.1155/2002/592436Wavelet Based Demodulation of Vibration Signals Generated by Defects in Rolling Element BearingsC.T. Yiakopoulos0I.A. Antoniadis1National Technical University of Athens, Department of Mechanical Engineering, Machine Design and Control Systems Section, P.O. Box 64078, Athens 15710, GreeceNational Technical University of Athens, Department of Mechanical Engineering, Machine Design and Control Systems Section, P.O. Box 64078, Athens 15710, GreeceVibration signals resulting from roller bearing defects, present a rich content of physical information, the appropriate analysis of which can lead to the clear identification of the nature of the fault. The envelope detection or demodulation methods have been established as the dominant analysis methods for this purpose, since they can separate the useful part of the signal from its redundant contents. The paper proposes a new effective demodulation method, based on the wavelet transform. The method fully exploits the underlying physical concepts of the modulation mechanism, present in the vibration response of faulty bearings, using the excellent time-frequency localization properties of the wavelet analysis. The choice of the specific wavelet family is marginal to their overall effect, while the necessary number of wavelet levels is quite limited. Experimental results and industrial measurements for three different types of bearing faults confirm the validity of the overall approach.http://dx.doi.org/10.1155/2002/592436 |
| spellingShingle | C.T. Yiakopoulos I.A. Antoniadis Wavelet Based Demodulation of Vibration Signals Generated by Defects in Rolling Element Bearings Shock and Vibration |
| title | Wavelet Based Demodulation of Vibration Signals Generated by Defects in Rolling Element Bearings |
| title_full | Wavelet Based Demodulation of Vibration Signals Generated by Defects in Rolling Element Bearings |
| title_fullStr | Wavelet Based Demodulation of Vibration Signals Generated by Defects in Rolling Element Bearings |
| title_full_unstemmed | Wavelet Based Demodulation of Vibration Signals Generated by Defects in Rolling Element Bearings |
| title_short | Wavelet Based Demodulation of Vibration Signals Generated by Defects in Rolling Element Bearings |
| title_sort | wavelet based demodulation of vibration signals generated by defects in rolling element bearings |
| url | http://dx.doi.org/10.1155/2002/592436 |
| work_keys_str_mv | AT ctyiakopoulos waveletbaseddemodulationofvibrationsignalsgeneratedbydefectsinrollingelementbearings AT iaantoniadis waveletbaseddemodulationofvibrationsignalsgeneratedbydefectsinrollingelementbearings |