Bearing Fault Feature Extraction Method Based on GA-VMD and Center Frequency

Table 4

Classification recognition rates of single IMF component envelope entropy.

IMF	Classification and recognition accuracy (%)
	Normal	Inner ring fault	Outer ring fault	Rolling element fault	Mean
IMF1	28	50	76	34	47
IMF2	44	44	98	40	56.5
IMF3	28	42	56	22	37
IMF4	32	40	60	42	43.5
IMF5	60	28	40	60	47
IMF6	90	54	36	64	61
IMF7	56	38	46	90	57.5
IMF8	40	70	38	44	48
IMF9	22	48	26	33	38