Research Article
Rolling Bearing Fault Diagnostic Method Based on VMD-AR Model and Random Forest Classifier
Table 3
Classification results for fault severity level problem using VMD-AR model and RF classifier.
| Number of modes | Number of training samples | Number of testing samples | Classification accuracy (%) | Total accuracy (%) | Normal | 0.18 mm | 0.36 mm | 0.53 mm |
| 4 | 80 | 320 | 100 | 97.63 | 98.38 | 91.25 | 96.81 | 160 | 240 | 100 | 99.67 | 98.83 | 95.83 | 98.58 | 240 | 160 | 100 | 99.5 | 98.5 | 96 | 98.5 | 320 | 80 | 100 | 99 | 98.5 | 97 | 98.63 |
| 5 | 80 | 320 | 100 | 99.63 | 97 | 98.25 | 98.72 | 160 | 240 | 100 | 100 | 99.17 | 99.83 | 99.75 | 240 | 160 | 100 | 100 | 99 | 99.5 | 99.63 | 320 | 80 | 100 | 100 | 100 | 100 | 100 |
| 6 | 80 | 320 | 100 | 100 | 99.5 | 98.13 | 99.41 | 160 | 240 | 100 | 100 | 100 | 98.67 | 99.67 | 240 | 160 | 100 | 100 | 100 | 99 | 99.75 | 320 | 80 | 100 | 100 | 99.5 | 97.5 | 99.25 |
| 7 | 80 | 320 | 100 | 100 | 95.75 | 94.25 | 97.5 | 160 | 240 | 100 | 100 | 96.17 | 97.33 | 98.38 | 240 | 160 | 100 | 99.25 | 96.5 | 97.75 | 98.38 | 320 | 80 | 100 | 100 | 97.5 | 100 | 99.38 |
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