We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Research on Fault Feature Extraction Method Based on FDM-RobustICA and MOMEDA.
- Authors
Yang, Jingzong; Li, Xuefeng; Wu, Limei
- Abstract
Aiming at the difficulty of extracting rolling bearing fault features under strong background noise conditions, a method based on the Fourier decomposition method (FDM), robust independent component analysis (RobustICA), and multipoint optimal minimum entropy deconvolution adjusted (MOMEDA) is proposed. Firstly, the FDM method is introduced to decompose the single-channel bearing fault signal into several Fourier intrinsic band functions (FIBF). Secondly, by setting the cross-correlation coefficient and kurtosis as a new selection criterion, it can effectively construct the virtual noise channel and the observation signal channel, which makes RobustICA complete the separation of the useful signal and noise well. Finally, MOMEDA is introduced to enhance the periodic impact components in the denoised signal, and then the filtered signal is analyzed by the Hilbert envelope spectrum to extract the fault characteristic frequency. Through the experimental analysis of the simulated signals and the actual bearing fault signals, the results show that the proposed method not only has the ability to suppress noise and accurately extract fault feature information but also has better performance than the traditional method of local mean decomposition (LMD) and intrinsic time-scale decomposition (ITD), highlighting its practicality in the fault diagnosis of rotating machinery.
- Subjects
FEATURE extraction; INDEPENDENT component analysis; SIGNAL separation; SEPARATION of variables; FAULT diagnosis; DECOMPOSITION method
- Publication
Mathematical Problems in Engineering, 2020, p1
- ISSN
1024-123X
- Publication type
Article
- DOI
10.1155/2020/6753949