Research Article
A Novel Method for Remaining Useful Life Prediction of Roller Bearings Involving the Discrepancy and Similarity of Degradation Trajectories
Table 6
The RUL prediction results of the testing bearings.
| | Testing bearings | B 1_3 | B 1_4 | B 1_5 | B 1_6 | B 1_7 | B 2_3 | B 2_4 | B 2_5 | B 2_6 | B 2_7 | B 3_3 |
| Optimal order | 2 | 2 | 8 | 7 | 7 | 5 | 5 | 7 | 6 | 4 | 8 | Current sample point | 1,802 | 1,139 | 2,302 | 2,302 | 1,502 | 1,202 | 612 | 2,002 | 572 | 172 | 352 | Predicted life (10 s) | 2,440 | 1,391 | 2,836 | 2,740 | 2,410 | 1,940 | 759 | 2,314 | 726 | 219 | 430 | Predicted RUL (10 s) | 638 | 252 | 534 | 438 | 908 | 738 | 147 | 312 | 156 | 47 | 78 | Actual RUL (10 s) | 573 | 339 | 161 | 146 | 757 | 753 | 139 | 309 | 129 | 58 | 82 | Error rate (%) | –11.34 | 12.80 | –231.6 | –200 | –19.95 | 1.992 | –5.755 | –0.971 | –19.38 | 18.99 | 4.878 |
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