Research Article
Deep Transfer Learning-Based Fault Diagnosis for Gearbox under Complex Working Conditions
| Group | Training set | Testing set |
| 1 | 6 Hz–5 V | Multi-A | 2 | 6 Hz–8 V | Multi-B | 3 | 10 Hz–5 V | Multi-C | 4 | 10 Hz–8 V | Multi-D | 5 | 14 Hz–5 V | Multi-E | 6 | 14 Hz–8 V | Multi-F | 7 | 14 Hz–8 V | Single-G (6 Hz–3 V) | 8 | 6 Hz–8 V | Single-H (10 Hz–3 V) | 9 | 10 Hz–8 V | Single-I (14 Hz–3 V) |
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