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摘要:
Local Mean Decomposition (LMD) has been widely used in signal processing and fault diagnosis of mechanical equipment, but there are still some issues that need to be improved, such as endpoint effects, mode mixing, and so on. This study proposes a novel method called Fast and Adaptive Local Mean Decomposition(FALMD), which can decompose the signal into some product function components(PF)and a residual component, just like LMD. This method changes the termination criterion, and the speed of operation is accelerated; order statistics filters are used to weaken the endpoint effect. Using this method, the simulation and experimental signal can be decomposed quickly, effectively and accurately. This method can be applied to the fault diagnosis of bearing. © 2020, Nanjing Univ. of Aeronautics an Astronautics. All right reserved.
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来源 :
Journal of Vibration Engineering
ISSN: 1004-4523
年份: 2020
期: 1
卷: 33
页码: 206-212
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