Rolling Bearing Diagnosis Based on Adaptive Probabilistic PCA and the Enhanced Morphological Filter

Table 6

The comparison results of APPCA-EMDF, ACDIF, VMD, and SK methods in simulation case 2.

Method	APPCA-EMDF	ACDIF	VMD	SK
CPU time (s)	40.02	16.81	35.16	3.95
Kurtosis	12.8540	4.9885	5.0105	4.5118
FEF	0.3635	0.1026	0.2375	0.0074