Research Article
Rolling Bearing Fault Diagnosis Based on Domain Adaptation and Preferred Feature Selection under Variable Working Conditions
Table 13
The introduction of experimental data.
| Fault condition | Fault size (mm) | Number of training samples | Number of testing samples | Class label | 1800 tr/min | 1800 tr/min (case 1) | 1200 tr/min (case 2) |
| Normal | 0 | 20 | 40 | 40 | 1 |
| Ball fault | 0.05 | 20 | 40 | 40 | 2 | 0.1 | 20 | 40 | 40 | 3 | 0.2 | 20 | 40 | 40 | 4 |
| Inner race fault | 0.05 | 20 | 40 | 40 | 5 | 0.1 | 20 | 40 | 40 | 6 | 0.2 | 20 | 40 | 40 | 7 |
| Outer race fault | 0.05 | 20 | 40 | 40 | 8 | 0.1 | 20 | 40 | 40 | 9 | 0.2 | 20 | 40 | 40 | 10 | Number of samples | ā | 240 | 480 | 480 | ā |
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