Rolling Bearing Fault Diagnosis under Variable Conditions Using Hilbert-Huang Transform and Singular Value Decomposition

Table 2

Training data and testing data statistics.

Label	Status	Working condition
		Testing data				Training data
		0 HP	1 HP	2 HP	3 HP	3 HP
1	Normal	24	24	24	19	5
2	Inner-race fault	24	24	24	19	5
3	Outer-race fault	24	24	24	19	5
4	Rolling element fault	24	24	24	19	5