Research Article
Bearing Fault Prognosis Method Based on Priori Knowledge-Enhanced Particle Filter
Table 3
The fitting values under the 95% confidence interval of parameters of the double exponential model.
| | Dataset | Parameter | Floor level | Upper level |
| | Data 1 | a | 2.20 × 10−10 | 2.25 × 10−04 | | b | 7.05 × 10−04 | 7.38 × 10−03 | | c | 3.95 × 10−05 | 9.16 × 10−04 | | d | 2.70 × 10−05 | 3.12 × 10−04 |
| | Data 2 | a | 2.45 × 10−10 | 2.56 × 10−04 | | b | 5.55 × 10−04 | 7.10 × 10−03 | | c | 8.39 × 10−05 | 1.46 × 10−04 | | d | 2.64 × 10−05 | 2.95 × 10−04 |
| | Data 3 | a | 2.25 × 10−10 | 2.36 × 10−04 | | b | 1.24 × 10−04 | 1.33 × 10−03 | | c | 4.87 × 10−05 | 1.62 × 10−04 | | d | 3.56 × 10−05 | 3.99 × 10−04 |
| | Data 4 | a | 2.83 × 10−10 | 3.07 × 10−04 | | b | 1.49 × 10−04 | 2.48 × 10−03 | | c | 4.51 × 10−05 | 1.39 × 10−04 | | d | 1.99 × 10−05 | 2.61 × 10−04 |
| | Data 7 | a | 3.05 × 10−10 | 3.20 × 10−04 | | b | 3.45 × 10−04 | 7.54 × 10−03 | | c | 3.88 × 10−05 | 4.65 × 10−04 | | d | 6.23 × 10−05 | 7.15 × 10−04 |
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