Feature Frequency Extraction Algorithm based on PCA and MK-MOMEDA and Its Application
Aiming at the problem of extracting characteristic frequency of flexible thin-walled bearings，a feature frequency extraction algorithm combining principal component analysis （PCA） and multi-point optimally adjusted minimum entropy deconvolution （MOMEDA） is proposed. In the algorithm，PCA is used to p...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Journal of Mechanical Transmission
2020-01-01
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| Series: | Jixie chuandong |
| Subjects: | |
| Online Access: | http://www.jxcd.net.cn/thesisDetails#10.16578/j.issn.1004.2539.2020.12.024 |
| _version_ | 1797819667216072704 |
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| author | Jiawei Zheng Qihong Liu Weiguang Li Xuezhi Zhao Guochen Li |
| author_facet | Jiawei Zheng Qihong Liu Weiguang Li Xuezhi Zhao Guochen Li |
| author_sort | Jiawei Zheng |
| collection | DOAJ |
| description | Aiming at the problem of extracting characteristic frequency of flexible thin-walled bearings，a feature frequency extraction algorithm combining principal component analysis （PCA） and multi-point optimally adjusted minimum entropy deconvolution （MOMEDA） is proposed. In the algorithm，PCA is used to perform noise reduction processing on the original signal to obtain a reconstructed signal. The multipoint kurtosis （MKurt） is used to extract the period of the periodic shock signal in the reconstructed signal，and the theoretical period is corrected to obtain an accurate deconvolution period，enhance the reconstructed signal through MOMEDA，highlight its periodic impact，and extract the characteristic frequency more effectively. This method is applied to the fault feature frequency extraction of flexible thin-walled bearings，and compared with the maximum correlation kurtosis deconvolution （MCKD） algorithm. The results show that this method can separate bearing fault shocks from periodic shocks caused by the alternation of the bearing's long and short axes，eliminate the interference of such normal periodic shocks，and effectively extract the fault characteristic frequency in the signal. The effect is better than the maximum correlation kurtosis deconvolution algorithm. |
| first_indexed | 2024-03-13T09:26:00Z |
| format | Article |
| id | doaj.art-3f59f4537a9640f8ab5e58fea9d68064 |
| institution | Directory Open Access Journal |
| issn | 1004-2539 |
| language | zho |
| last_indexed | 2024-03-13T09:26:00Z |
| publishDate | 2020-01-01 |
| publisher | Editorial Office of Journal of Mechanical Transmission |
| record_format | Article |
| series | Jixie chuandong |
| spelling | doaj.art-3f59f4537a9640f8ab5e58fea9d680642023-05-26T09:32:49ZzhoEditorial Office of Journal of Mechanical TransmissionJixie chuandong1004-25392020-01-01441461525492659Feature Frequency Extraction Algorithm based on PCA and MK-MOMEDA and Its ApplicationJiawei ZhengQihong LiuWeiguang LiXuezhi ZhaoGuochen LiAiming at the problem of extracting characteristic frequency of flexible thin-walled bearings，a feature frequency extraction algorithm combining principal component analysis （PCA） and multi-point optimally adjusted minimum entropy deconvolution （MOMEDA） is proposed. In the algorithm，PCA is used to perform noise reduction processing on the original signal to obtain a reconstructed signal. The multipoint kurtosis （MKurt） is used to extract the period of the periodic shock signal in the reconstructed signal，and the theoretical period is corrected to obtain an accurate deconvolution period，enhance the reconstructed signal through MOMEDA，highlight its periodic impact，and extract the characteristic frequency more effectively. This method is applied to the fault feature frequency extraction of flexible thin-walled bearings，and compared with the maximum correlation kurtosis deconvolution （MCKD） algorithm. The results show that this method can separate bearing fault shocks from periodic shocks caused by the alternation of the bearing's long and short axes，eliminate the interference of such normal periodic shocks，and effectively extract the fault characteristic frequency in the signal. The effect is better than the maximum correlation kurtosis deconvolution algorithm.http://www.jxcd.net.cn/thesisDetails#10.16578/j.issn.1004.2539.2020.12.024PCA;MOMEDA;Multipoint kurtosis;Feature frequency extraction |
| spellingShingle | Jiawei Zheng Qihong Liu Weiguang Li Xuezhi Zhao Guochen Li Feature Frequency Extraction Algorithm based on PCA and MK-MOMEDA and Its Application Jixie chuandong PCA;MOMEDA;Multipoint kurtosis;Feature frequency extraction |
| title | Feature Frequency Extraction Algorithm based on PCA and MK-MOMEDA and Its Application |
| title_full | Feature Frequency Extraction Algorithm based on PCA and MK-MOMEDA and Its Application |
| title_fullStr | Feature Frequency Extraction Algorithm based on PCA and MK-MOMEDA and Its Application |
| title_full_unstemmed | Feature Frequency Extraction Algorithm based on PCA and MK-MOMEDA and Its Application |
| title_short | Feature Frequency Extraction Algorithm based on PCA and MK-MOMEDA and Its Application |
| title_sort | feature frequency extraction algorithm based on pca and mk momeda and its application |
| topic | PCA;MOMEDA;Multipoint kurtosis;Feature frequency extraction |
| url | http://www.jxcd.net.cn/thesisDetails#10.16578/j.issn.1004.2539.2020.12.024 |
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