Rolling Bearing Fault Diagnostic Method Based on VMD-AR Model and Random Forest Classifier

Table 2

Classification result for fault location problem using VMD-AR model and SVM classifier.

Number of modes	Number of training samples	Number of testing samples	Classification accuracy (%)				Total accuracy (%)
			Normal	IR fault	B fault	OR fault
4	80	320	99	100	100	53.13	88.03
	160	240	100	100	100	50.83	87.71
	240	160	100	100	100	53.25	88.31
	320	80	100	100	100	72.5	93.13
5	80	320	100	87	98.25	95	95.06
	160	240	100	86.5	98.83	100	96.33
	240	160	100	88.25	99.25	100	96.88
	320	80	100	89.5	99	100	97.13
6	80	320	100	100	88.88	100	97.22
	160	240	100	98	99.17	100	99.29
	240	160	100	100	100	100	100
	320	80	100	100	100	100	100
7	80	320	99.63	96.75	92.13	91	94.88
	160	240	99.67	99.83	97.67	93.5	97.67
	240	160	100	100	100	95.75	98.94
	320	80	100	100	100	94.5	98.63