改进的EMD在齿轮箱故障诊断中的应用研究
An improved empirical mode decomposition（ EMD） method of fault diagnosis is presented,Which combined with the wavelet packet denoising,the correlation coefficient principle,the wavelet denoising with selecting different db vanishing moments and the EMD decomposition. The first,the fault signal is pr...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Transmission
2014-01-01
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| Series: | Jixie chuandong |
| Online Access: | http://www.jxcd.net.cn/thesisDetails#10.16578/j.issn.1004.2539.2014.10.023 |
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| _version_ | 1849733525739143168 |
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| author | 许昕 潘宏侠 |
| author_facet | 许昕 潘宏侠 |
| author_sort | 许昕 |
| collection | DOAJ |
| description | An improved empirical mode decomposition（ EMD） method of fault diagnosis is presented,Which combined with the wavelet packet denoising,the correlation coefficient principle,the wavelet denoising with selecting different db vanishing moments and the EMD decomposition. The first,the fault signal is pretreated by wavelet packet denoising; then the fault signal is processed by the EMD decomposition to get a series of IMF,by calculating the correlation coefficient of each IMP with the original signal,the effective sets which need to repeat denoising are obtained. According to the mutation strength of the effective concentration IMF by selecting db wavelet with different vanishing moments,the noise reduction is repeated; Finally the signal is reconstructed and the power spectrum is generated. The experimental results show that this method can remove the noise which mixed in the fault signal,improve the signal to noise ratio,tell the faults of the gear and the bearing from the normal condition. |
| format | Article |
| id | doaj-art-4e750aa285764a1c9284b30b4268750a |
| institution | DOAJ |
| issn | 1004-2539 |
| language | zho |
| publishDate | 2014-01-01 |
| publisher | Editorial Office of Journal of Mechanical Transmission |
| record_format | Article |
| series | Jixie chuandong |
| spelling | doaj-art-4e750aa285764a1c9284b30b4268750a2025-08-20T03:08:01ZzhoEditorial Office of Journal of Mechanical TransmissionJixie chuandong1004-25392014-01-01384888642433改进的EMD在齿轮箱故障诊断中的应用研究许昕潘宏侠An improved empirical mode decomposition（ EMD） method of fault diagnosis is presented,Which combined with the wavelet packet denoising,the correlation coefficient principle,the wavelet denoising with selecting different db vanishing moments and the EMD decomposition. The first,the fault signal is pretreated by wavelet packet denoising; then the fault signal is processed by the EMD decomposition to get a series of IMF,by calculating the correlation coefficient of each IMP with the original signal,the effective sets which need to repeat denoising are obtained. According to the mutation strength of the effective concentration IMF by selecting db wavelet with different vanishing moments,the noise reduction is repeated; Finally the signal is reconstructed and the power spectrum is generated. The experimental results show that this method can remove the noise which mixed in the fault signal,improve the signal to noise ratio,tell the faults of the gear and the bearing from the normal condition.http://www.jxcd.net.cn/thesisDetails#10.16578/j.issn.1004.2539.2014.10.023 |
| spellingShingle | 许昕 潘宏侠 改进的EMD在齿轮箱故障诊断中的应用研究 Jixie chuandong |
| title | 改进的EMD在齿轮箱故障诊断中的应用研究 |
| title_full | 改进的EMD在齿轮箱故障诊断中的应用研究 |
| title_fullStr | 改进的EMD在齿轮箱故障诊断中的应用研究 |
| title_full_unstemmed | 改进的EMD在齿轮箱故障诊断中的应用研究 |
| title_short | 改进的EMD在齿轮箱故障诊断中的应用研究 |
| title_sort | 改进的emd在齿轮箱故障诊断中的应用研究 |
| url | http://www.jxcd.net.cn/thesisDetails#10.16578/j.issn.1004.2539.2014.10.023 |
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