Bearing Fault Diagnosis Based on Multilayer Domain Adaptation

Table 3

Experimental results of different signal processing methods.

Transfer task	Time domain + MLDA (%)	EMD + MLDA (%)	FFT + MLDA (%)
0-1	93.02	96.26	99.52
0-2	65.95	78.24	99.24
0-3	61.10	72.42	97.52
1-0	98.38	97.96	99.81
1-2	83.89	87.29	99.60
1-3	77.00	82.72	99.40
2-0	66.15	74.78	99.65
2-1	80.93	81.72	99.63
2-3	95.70	97.02	98.89
3-0	68.47	85.99	98.65
3-1	80.61	84.28	98.68
3-2	96.74	98.21	99.07