Intelligent Roller Bearing Fault Diagnosis in Industrial Internet of Things

Table 8

Mean and standard deviation of the MSE/MFE/RCMSE and RCMMSE of 1/f noise at a scale factor of 20.

Mode	Precision (%)
	Total number of testing samples
	160	120	80
EEMD-RCMMSE-SVM	69.375	73.33	86.25
EEMD-RCMMSE-RF	63.75	69.17	80
EEMD-RCMMSE-PNN	71.25	74.16	71.25
VMD-RCMMSE-SVM (k = 3)	85	88.3	91.25
VMD-RCMMSE-RF (k = 3)	81.25	88.3	91.25
VMD-RCMMSE-PNN (k = 3)	83.125	85	86.25
VMD-RCMMSE-SVM (k = 4)	98.125	99.1667	100
VMD-RCMMSE-RF (k = 4)	96.25	96.67	97.5
VMD-RCMMSE-PNN (k = 4)	93.75	90.83	91.25
VMD-RCMMSE-SVM (k = 5)	98.75	97.5	98.75
VMD-RCMMSE-RF (k = 5)	97.5	95	96.25
VMD-RCMMSE-PNN (k = 5)	86.875	90	91.25