A New Framework Based on Supervised Joint Distribution Adaptation for Bearing Fault Diagnosis across Diverse Working Conditions

Table 1

The CWRU bearing data for experiments.

Category of bearing defect	Defect diameter (inches)	Number of training/testing samples				Class label
		Motor loads 0 hp	Motor loads 1 hp	Motor loads 2 hp	Motor loads 3 hp
No defect	0	20/40	20/40	20/40	20/40	1
Inner raceway defect (IRD)	0.007	20/40	20/40	20/40	20/40	2
	0.014	20/40	20/40	20/40	20/40	3
	0.021	20/40	20/40	20/40	20/40	4
	0.028	20/40	20/40	20/40	20/40	5
Outer raceway defect (BD)	0.007	20/40	20/40	20/40	20/40	6
	0.014	20/40	20/40	20/40	20/40	7
	0.021	20/40	20/40	20/40	20/40	8
Ball defect (ORD)	0.007	20/40	20/40	20/40	20/40	9
	0.014	20/40	20/40	20/40	20/40	10
	0.021	20/40	20/40	20/40	20/40	11
	0.028	20/40	20/40	20/40	20/40	12