Fault Diagnosis for Rolling Bearing under Variable Conditions Based on Image Recognition

Table 4

The detailed error samples statistics of cross-validation.

The work conditions of training data	The work conditions of test data		Normal	Inner race fault	Element fault	Outer race fault	Mean value/sum
1	2	Number of data	20	20	20	20	80
		Number of wrong samples	0	0	0	0	0
		Error rate	0	0	0	0	0
	3	Number of data	20	20	20	20	80
		Number of wrong samples	0	0	0	6	6
		Error rate	0	0	0	0.3	0.075
	4	Number of data	20	20	20	20	20
		Number of wrong samples	0	0	1	0	1
		Error rate	0	0	0.05	0	0.0125
	2	1	Number of data	20	20	20	20	80
			Number of wrong samples	0	0	0	0	0
Error rate			0	0	0	0	0
3		Number of data	20	20	20	20	80
		Number of wrong samples	0	1	0	5	6
		Error rate	0	0.05	0	0.25	0.075
4		Number of data	20	20	20	20	80
		Number of wrong samples	0	1	0	0	1
		Error rate	0	0.05	0	0	0.125
3		1	Number of data	20	20	20	20	80
			Number of wrong samples	0	0	1	5	6
	Error rate		0	0	0.05	0.25	0.075
	2	Number of data	20	20	20	20	80
		Number of wrong samples	0	0	0	0	0
		Error rate	0	0	0	0	0
	4	Number of data	20	20	20	20	80
		Number of wrong samples	0	0	0	0	0
		Error rate	0	0	0	0	0
	4	1	Number of data	20	20	20	20	80
			Number of wrong samples	0	0	6	0	6
Error rate			0	0	0.3	0	0.075
2		Number of data	20	20	20	20	80
		Number of wrong samples	0	0	0	0	0
		Error rate	0	0	0	0	0
3		Number of data	20	20	20	20	80
		Number of wrong samples	0	0	0	0	0
		Error rate	0	0	0	0	0