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

Table 5

Classification recognition rates of center frequency.

IMF	Classification and recognition accuracy (%)
	Normal	Inner ring fault	Outer ring fault	Rolling element fault	Mean
IMF1∼2	100	100	100	94	98.5
IMF1∼3	100	100	100	94	98.5
IMF1∼4	100	100	100	100	100
IMF1∼5	100	100	100	100	100
IMF1∼6	100	100	100	100	100
IMF1∼7	100	100	100	100	100
IMF1∼8	100	100	100	100	100
IMF1∼9	100	100	100	100	100