Research Article
Fault Frequency Identification of Rolling Bearing Using Reinforced Ensemble Local Mean Decomposition
Table 2
Identification accuracy comparisons between the proposed method and its counterparts under different operating conditions of CWRU dataset.
| Fault | Speed | Fault frequency | Rule of thumb | LMD + FSK | ELMD + FSK | Reinforced ELMD + FSK (proposed) | CFF (Hz) | Error (%) | AFF | CFF (Hz) | Error (%) | AFF | CFF (Hz) | Error (%) | AFF | CFF (Hz) | Error (%) | AFF |
| Inner | 1730 | 156.03 | 155.30 | 0.46 | 0.22 | 155.27 | 0.49 | 0.07 | 155.30 | 0.46 | 0.21 | 155.30 | 0.46 | 6.49 | 1750 | 157.84 | 158.20 | 0.23 | 0.18 | 158.20 | 0.23 | 0.08 | 158.20 | 0.23 | 0.17 | 158.20 | 0.22 | 12.78 | 1772 | 159.82 | 158.20 | 1.02 | 0.15 | 161.13 | 0.82 | 0.07 | 158.20 | 1.01 | 0.15 | 158.20 | 1.01 | 17.87 | 1797 | 162.08 | 161.10 | 0.60 | 0.18 | 161.13 | 0.59 | 0.09 | 161.10 | 0.60 | 0.18 | 161.10 | 0.60 | 40.30 |
| Outer | 1730 | 103.47 | 108.40 | 4.76 | 0.01 | 102.53 | 0.91 | 0.01 | 108.40 | 4.76 | 0.01 | 108.40 | 4.76 | 4.87 | 1750 | 104.66 | 93.75 | 10.42 | 0.02 | 93.75 | 10.42 | 0.01 | 105.50 | 0.80 | 0.01 | 105.50 | 0.80 | 6.45 | 1772 | 105.98 | 158.20 | 49.27 | 0.01 | 70.31 | 33.66 | 0.01 | 158.20 | 49.27 | 0.01 | 99.68 | 5.94 | 2.49 | 1797 | 107.47 | 131.80 | 22.64 | 0.01 | 131.84 | 22.68 | 0.02 | 128.90 | 19.94 | 0.01 | 102.50 | 4.62 | 5.41 |
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CFF indicates the calculated fault frequency of a certain method. AFF denotes the amplitude at fault frequency of the corresponding method.
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