Bearing Health Monitoring Based on the Orthogonal Empirical Mode Decomposition

Table 4

Detection of the defect in the inner raceway (BPFI), based on the data processing of channels 1 and 2; list of detected harmonics.

BPFI and its harmonics: channel 1		BPFI and its harmonics: channel 2
1st OIMF	21 × BPFI	1st OIMF	20 × BPFI
	18 × BPFI		19 × BPFI
	13 × BPFI
	10 × BPFI
2nd OIMF	15 × BPFI	2nd OIMF	11 × BPFI
	14 × BPFI		10 × BPFI
	13 × BPFI		9 × BPFI
	12 × BPFI
	10 × BPFI
4th OIMF	5 × BPFI	3rd OIMF	9 × BPFI
	4 × BPFI		7 × BPFI
	8 × BPFI
	6 × BPFI
	5 × BPFI
7th OIMF	BPFI	4th OIMF	9 × BPFI
		7th OIMF	BPFI