Hurst based vibro-acoustic feature extraction of bearing using EMD and VMD

Fault feature extractions of the bearings using the vibration signals are an age old method to anticipate faults in machines. However, the recent research shows that the acoustic sensing using pressure based microphones have significant scope in the area of fault diagnosis. In this paper, initially, the vibro-acoustic features of the bearing at variable speeds are analyzed using variational mode decomposition (VMD) and empirical mode...