Improved Dual-tree Complex Wavelet Packet Transform with Application to Fault Diagnosis
Aiming at the defects of frequency derangement and overlap in dual-tree complex wavelet packet transform,an improved decomposition algorithm of dual-tree complex wavelet packet transform is proposed. The defect of frequency derangement is eliminated by exchanging the order of sub-nodes originated fr...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Transmission
2018-01-01
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| Series: | Jixie chuandong |
| Subjects: | |
| Online Access: | http://www.jxcd.net.cn/thesisDetails#10.16578/j.issn.1004.2539.2018.08.032 |
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| author | She Bo Tian Fuqing Liang Weige |
| author_facet | She Bo Tian Fuqing Liang Weige |
| author_sort | She Bo |
| collection | DOAJ |
| description | Aiming at the defects of frequency derangement and overlap in dual-tree complex wavelet packet transform,an improved decomposition algorithm of dual-tree complex wavelet packet transform is proposed. The defect of frequency derangement is eliminated by exchanging the order of sub-nodes originated from high frequency band,and the defect of frequency overlap is overcome by designing the filter of Chebyshev which can eliminate respectively the frequencies outside the pass bands of low frequency and high frequency sub-band. A approach for gearbox fault diagnosis based on the improved dual-tree complex wavelet packet transform and spectral kurtosis is presented,vibration signals of gearbox are decomposed into various frequency band signals,the spectral kurtosis is computed to determine the parameters of band pass filter and got the optimal frequency band. The rotation frequency of fault gear is recognized according to the Hilbert envelope demodulation of the optimal frequency band. The experimental results show that the weak fault feature of gearbox submerged in strong interference can be effectively extracted,and the feasibility and effectiveness of this method are verified. |
| format | Article |
| id | doaj-art-556f011fcc5f4238a6bb8423dc6e6605 |
| institution | Kabale University |
| issn | 1004-2539 |
| language | zho |
| publishDate | 2018-01-01 |
| publisher | Editorial Office of Journal of Mechanical Transmission |
| record_format | Article |
| series | Jixie chuandong |
| spelling | doaj-art-556f011fcc5f4238a6bb8423dc6e66052025-01-10T14:41:02ZzhoEditorial Office of Journal of Mechanical TransmissionJixie chuandong1004-25392018-01-014216216829938020Improved Dual-tree Complex Wavelet Packet Transform with Application to Fault DiagnosisShe BoTian FuqingLiang WeigeAiming at the defects of frequency derangement and overlap in dual-tree complex wavelet packet transform,an improved decomposition algorithm of dual-tree complex wavelet packet transform is proposed. The defect of frequency derangement is eliminated by exchanging the order of sub-nodes originated from high frequency band,and the defect of frequency overlap is overcome by designing the filter of Chebyshev which can eliminate respectively the frequencies outside the pass bands of low frequency and high frequency sub-band. A approach for gearbox fault diagnosis based on the improved dual-tree complex wavelet packet transform and spectral kurtosis is presented,vibration signals of gearbox are decomposed into various frequency band signals,the spectral kurtosis is computed to determine the parameters of band pass filter and got the optimal frequency band. The rotation frequency of fault gear is recognized according to the Hilbert envelope demodulation of the optimal frequency band. The experimental results show that the weak fault feature of gearbox submerged in strong interference can be effectively extracted,and the feasibility and effectiveness of this method are verified.http://www.jxcd.net.cn/thesisDetails#10.16578/j.issn.1004.2539.2018.08.032Dual-tree complex wavelet packet transformFrequency band derangementFrequency band overlapSpectral KurtosisFault diagnosis |
| spellingShingle | She Bo Tian Fuqing Liang Weige Improved Dual-tree Complex Wavelet Packet Transform with Application to Fault Diagnosis Jixie chuandong Dual-tree complex wavelet packet transform Frequency band derangement Frequency band overlap Spectral Kurtosis Fault diagnosis |
| title | Improved Dual-tree Complex Wavelet Packet Transform with Application to Fault Diagnosis |
| title_full | Improved Dual-tree Complex Wavelet Packet Transform with Application to Fault Diagnosis |
| title_fullStr | Improved Dual-tree Complex Wavelet Packet Transform with Application to Fault Diagnosis |
| title_full_unstemmed | Improved Dual-tree Complex Wavelet Packet Transform with Application to Fault Diagnosis |
| title_short | Improved Dual-tree Complex Wavelet Packet Transform with Application to Fault Diagnosis |
| title_sort | improved dual tree complex wavelet packet transform with application to fault diagnosis |
| topic | Dual-tree complex wavelet packet transform Frequency band derangement Frequency band overlap Spectral Kurtosis Fault diagnosis |
| url | http://www.jxcd.net.cn/thesisDetails#10.16578/j.issn.1004.2539.2018.08.032 |
| work_keys_str_mv | AT shebo improveddualtreecomplexwaveletpackettransformwithapplicationtofaultdiagnosis AT tianfuqing improveddualtreecomplexwaveletpackettransformwithapplicationtofaultdiagnosis AT liangweige improveddualtreecomplexwaveletpackettransformwithapplicationtofaultdiagnosis |