Fault Diagnosis of Subway Traction Motor Bearing Based on Information Fusion under Variable Working Conditions

Table 4

Accuracy rate of multicondition fault diagnosis.

No.	Training set speed (rpm)	Training set load (kN)	Test set speed (rpm)	Test set load (kN)	Diagnostic accuracy (%)
					Acoustic emission	Vibration	Comprehensive
1	800, 1600	5, 7, 9	2400	5, 7, 9	73.61	77.78	80.56
2	800, 2400	5, 7, 9	1600	5, 7, 9	69.44	84.72	93.06
3	1600, 2400	5, 7, 9	800	5, 7, 9	25.00	37.50	36.11
4	800, 1600, 2400	5, 7	800, 1600, 2400	9	90.28	97.22	100
5	800, 1600, 2400	5, 9	800, 1600, 2400	7	84.72	97.22	97.22
6	800, 1600, 2400	7, 9	800, 1600, 2400	5	77.78	90.28	94.44