期刊
MEASUREMENT
卷 183, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.measurement.2021.109837
关键词
Fourier decomposition method; Adaptive power spectrum Fourier; decomposition method; Empirical wavelet transform; Rolling bearing; Fault diagnosis
资金
- National Natural Science Foundation of China [51975004]
- National Key Technologies Research & Development Program of China [2017YFC0805100]
- Natural Science Foundation of Anhui Provence of China [2008085QE215]
- University Natural Science Research Project of Anhui Province of China [KJ2019A0053, KJ2019A0092]
The APSFDM method, based on FDM, offers higher fidelity in signal decomposition and more accurate fault feature information for fault diagnosis of rolling bearings.
Fourier decomposition method (FDM) is a recently proposed method for non-stationary signal decomposition. In FDM, the conditions for determining mono-components are easy to meet, which will lead to over-decomposition of signals. In this paper, a new adaptive power spectrum Fourier decomposition method (APSFDM) is proposed based on FDM. First, the intervals where the components located in the power spectrum of raw signal are adaptively searched and then the signal is decomposed into several mono-components with physically meaningful instantaneous frequencies by a reconstruction way. The APSFDM method is compared with existing empirical wavelet transform (EWT), empirical mode decomposition (EMD), variational mode decomposition (VMD) and FDM methods through simulation signal analysis to verify its superiority in signal fidelity. Finally, APSFDM method is employed to the fault diagnosis of rolling bearing with comparison it with the above mentioned existing method. The analysis results of the measured bearing data indicate that the monocomponents obtained by APSFDM contain more accurate fault feature information that can be used for an effective failure diagnosis of bearing. The effectiveness of APSFDM method is further verified by comparing its decomposition and diagnostic results with existing methods.
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