Intelligent Fault Severity Detection of Rotating Machines Based on VMD-WVD and Parameter-Optimized DBN

Table 3

Variance contribution rate of BIMF.

Fault classification	BIMF1	BIMF2	BIMF3	BIMF4
Normal	47.08	10.15	23.58	19.18
Inner race fault	2.94	16.72	24.04	56.30
Ball fault	16.92	19.00	17.57	46.52
Outer race fault	18.54	6.01	45.95	29.49
Average	21.37	12.97	27.78	37.87