Rolling Bearing Fault Diagnosis Based on Domain Adaptation and Preferred Feature Selection under Variable Working Conditions

Table 13

The introduction of experimental data.

Fault condition	Fault size (mm)	Number of training samples	Number of testing samples		Class label
		1800 tr/min	1800 tr/min (case 1)		1200 tr/min (case 2)
Normal	0	20	40	40	1
Ball fault	0.05	20	40	40	2
	0.1	20	40	40	3
	0.2	20	40	40	4
Inner race fault	0.05	20	40	40	5
	0.1	20	40	40	6
	0.2	20	40	40	7
Outer race fault	0.05	20	40	40	8
	0.1	20	40	40	9
	0.2	20	40	40	10
Number of samples		240	480	480