Method for Denoising the Vibration Signal of Rotating Machinery through VMD and MODWPT
The vibration signals from rotating machinery are constantly mixed with other noises during the acquisition process, which has a negative impact on the accuracy of signal feature extraction. For vibration signals from rotating machinery, the conventional linear filtering-based denoising method is in...
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MDPI AG
2023-08-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/15/6904 |
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| author | Xiaolong Zhou Xiangkun Wang Haotian Wang Zhongyuan Xing Zhilun Yang Linlin Cao |
| author_facet | Xiaolong Zhou Xiangkun Wang Haotian Wang Zhongyuan Xing Zhilun Yang Linlin Cao |
| author_sort | Xiaolong Zhou |
| collection | DOAJ |
| description | The vibration signals from rotating machinery are constantly mixed with other noises during the acquisition process, which has a negative impact on the accuracy of signal feature extraction. For vibration signals from rotating machinery, the conventional linear filtering-based denoising method is ineffective. To address this issue, this paper suggests an enhanced signal denoising method based on maximum overlap discrete wavelet packet transform (MODWPT) and variational mode decomposition (VMD). VMD decomposes the vibration signal of rotating machinery to produce a set of intrinsic mode functions (IMFs). By computing the composite weighted entropy (CWE), the phantom IMF component is then removed. In the end, the sensitive component is obtained by computing the value of the degree of difference (DID) after the high-frequency noise component has been decomposed through MODWPT. The denoised signal reconstructs the signal’s intrinsic characteristics as well as the denoised high-frequency IMF component. This technique was used to analyze the simulated and real-world signals of gear faults and it was compared to wavelet threshold denoising (WTD), empirical mode decomposition reconstruction denoising (EMD-RD), and ensemble empirical mode decomposition wavelet threshold denoising (EEMD-WTD). The outcomes demonstrate that this method can accurately extract the signal feature information while filtering out the noise components in the signal. |
| first_indexed | 2024-03-11T00:16:53Z |
| format | Article |
| id | doaj.art-cd88c3da51364331888d13632d8085d1 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-11T00:16:53Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-cd88c3da51364331888d13632d8085d12023-11-18T23:36:01ZengMDPI AGSensors1424-82202023-08-012315690410.3390/s23156904Method for Denoising the Vibration Signal of Rotating Machinery through VMD and MODWPTXiaolong Zhou0Xiangkun Wang1Haotian Wang2Zhongyuan Xing3Zhilun Yang4Linlin Cao5Mechanical Engineering College, Beihua University, Jilin City 132021, ChinaMechanical Engineering College, Beihua University, Jilin City 132021, ChinaMechanical Engineering College, Beihua University, Jilin City 132021, ChinaMechanical Engineering College, Beihua University, Jilin City 132021, ChinaMechanical Engineering College, Beihua University, Jilin City 132021, ChinaMechanical Engineering College, Beihua University, Jilin City 132021, ChinaThe vibration signals from rotating machinery are constantly mixed with other noises during the acquisition process, which has a negative impact on the accuracy of signal feature extraction. For vibration signals from rotating machinery, the conventional linear filtering-based denoising method is ineffective. To address this issue, this paper suggests an enhanced signal denoising method based on maximum overlap discrete wavelet packet transform (MODWPT) and variational mode decomposition (VMD). VMD decomposes the vibration signal of rotating machinery to produce a set of intrinsic mode functions (IMFs). By computing the composite weighted entropy (CWE), the phantom IMF component is then removed. In the end, the sensitive component is obtained by computing the value of the degree of difference (DID) after the high-frequency noise component has been decomposed through MODWPT. The denoised signal reconstructs the signal’s intrinsic characteristics as well as the denoised high-frequency IMF component. This technique was used to analyze the simulated and real-world signals of gear faults and it was compared to wavelet threshold denoising (WTD), empirical mode decomposition reconstruction denoising (EMD-RD), and ensemble empirical mode decomposition wavelet threshold denoising (EEMD-WTD). The outcomes demonstrate that this method can accurately extract the signal feature information while filtering out the noise components in the signal.https://www.mdpi.com/1424-8220/23/15/6904variational mode decomposition (VMD)maximal overlap discrete wavelet packet transform (MODWPT)mechanical vibration signalgeardenoising |
| spellingShingle | Xiaolong Zhou Xiangkun Wang Haotian Wang Zhongyuan Xing Zhilun Yang Linlin Cao Method for Denoising the Vibration Signal of Rotating Machinery through VMD and MODWPT Sensors variational mode decomposition (VMD) maximal overlap discrete wavelet packet transform (MODWPT) mechanical vibration signal gear denoising |
| title | Method for Denoising the Vibration Signal of Rotating Machinery through VMD and MODWPT |
| title_full | Method for Denoising the Vibration Signal of Rotating Machinery through VMD and MODWPT |
| title_fullStr | Method for Denoising the Vibration Signal of Rotating Machinery through VMD and MODWPT |
| title_full_unstemmed | Method for Denoising the Vibration Signal of Rotating Machinery through VMD and MODWPT |
| title_short | Method for Denoising the Vibration Signal of Rotating Machinery through VMD and MODWPT |
| title_sort | method for denoising the vibration signal of rotating machinery through vmd and modwpt |
| topic | variational mode decomposition (VMD) maximal overlap discrete wavelet packet transform (MODWPT) mechanical vibration signal gear denoising |
| url | https://www.mdpi.com/1424-8220/23/15/6904 |
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