Rolling Bearing Fault Diagnosis Method Based on Multisynchrosqueezing S Transform and Faster Dictionary Learning

Table 1

Description of CWRU dataset.

Fault type	Fault diameter (inches)	Motor load (hp)	Motor speed (r/min)	Dataset			Fault label
				Training set	Validation set	Testing set
Normal	—	0/1/2/3	1797/1772/1750/1730	360	120	120	1
Inner race	0.007	0/1/2/3	1797/1772/1750/1730	360	120	120	2
	0.014	0/1/2/3	1797/1772/1750/1730	360	120	120	3
	0.021	0/1/2/3	1797/1772/1750/1730	360	120	120	4
Ball	0.007	0/1/2/3	1797/1772/1750/1730	360	120	120	5
	0.014	0/1/2/3	1797/1772/1750/1730	360	120	120	6
	0.021	0/1/2/3	1797/1772/1750/1730	360	120	120	7
Outer race	0.007	0/1/2/3	1797/1772/1750/1730	360	120	120	8
	0.014	0/1/2/3	1797/1772/1750/1730	360	120	120	9
	0.021	0/1/2/3	1797/1772/1750/1730	360	120	120	10