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

Table 3

Accuracy rate of single condition 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	5, 7	800	9	94.44	95.83	100
2	800	5, 9	800	7	83.33	100	100
3	800	7, 9	800	5	66.67	70.83	91.67
4	800	5, 7, 9	800	5, 7, 9	100	100	100
5	1600	5, 7	1600	9	83.33	100	100
6	1600	5, 9	1600	7	95.83	100	100
7	1600	7, 9	1600	5	95.83	100	100
8	1600	5, 7, 9	1600	5, 7, 9	95.83	100	100
9	2400	5, 7	2400	9	100	100	100
10	2400	5, 9	2400	7	100	100	100
11	2400	7, 9	2400	5	91.67	100	100
12	2400	5, 7, 9	2400	5, 7, 9	100	100	100
13	800, 1600	5	2400	5	45.83	79.17	100
14	800, 2400	5	1600	5	54.17	83.33	100
15	1600, 2400	5	800	5	25.00	41.67	50.00
16	800, 1600, 2400	5	800, 1600, 2400	5	94.44	100	100
17	800, 1600	7	2400	7	54.17	83.33	83.33
18	800, 2400	7	1600	7	62.50	83.33	87.50
19	1600, 2400	7	800	7	33.33	50.00	75.00
20	800, 1600, 2400	7	800, 1600, 2400	7	77.78	100	100.0
21	800, 1600	9	2400	9	37.50	79.17	83.33
22	800, 2400	9	1600	9	75.00	100	100
23	1600, 2400	9	800	9	25	58.33	29.17
24	800, 1600, 2400	9	800, 1600, 2400	9	66.70	88.89	100