Research Article
Fault Diagnosis Method for Rotating Machinery Based on Hierarchical Amplitude-Aware Permutation Entropy and Pairwise Feature Proximity
Table 2
Detailed information of different working states of bearings.
| Label | Bearing state | Abbreviations | Fault diameter (mm) | The number of training samples | The number of testing samples |
| 1 | Normal state | Nor | | 20 | 30 | 2 | | IRF1 | 0.1778 | 20 | 30 | 3 | Inner race fault | IRF2 | 0.3556 | 20 | 30 | 4 | | IRF3 | 0.5334 | 20 | 30 | 5 | | BF1 | 0.1778 | 20 | 30 | 6 | Ball fault | BF2 | 0.3556 | 20 | 30 | 7 | | BF3 | 0.5334 | 20 | 30 | 8 | | ORF1 | 0.1778 | 20 | 30 | 9 | Outer race fault | ORF2 | 0.3556 | 20 | 30 | 10 | | ORF3 | 0.5334 | 20 | 30 |
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