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

Table 4

Classification results for fault severity level problem using VMD-AR model and SVM classifier.

Number of modes	Number of training samples	Number of testing samples	Classification accuracy (%)				Total accuracy (%)
			Normal	0.18 mm	0.36 mm	0.53 mm
4	80	320	97.25	94.75	47.88	88	81.97
	160	240	96.5	100	56.5	94.83	86.96
	240	160	98.25	100	63.25	95	89.13
	320	80	100	100	66	95.5	91
5	80	320	100	89.5	88.88	75.63	88.5
	160	240	100	91.83	89.5	85	91.58
	240	160	100	92.75	90	91.2	93.56
	320	80	100	100	90.5	93	95.88
6	80	320	100	99.13	92	85.38	94.13
	160	240	100	100	94	89.17	95.79
	240	160	100	100	92	91.25	95.81
	320	80	100	100	94.5	89.5	96
7	80	320	98.13	100	89	83.63	92.69
	160	240	99.33	100	93.5	87	94.96
	240	160	98.75	100	94.25	87.25	95.06
	320	80	99.5	100	95	86.5	95.25