Research Article
Diagnosis of Elevator Faults with LS-SVM Based on Optimization by K-CV
Table 1
Results for identifying elevator faults with a LS-SVM optimized by cross validation.
| Faults of tested samples | Input of SVM | Output | Energy characteristics | Time Domain characteristics | Noise extremes (dB) | | | | | | | Peak-to-peak values in direction (m/s2) | Peak-to-peak values in direction (m/s2) |
| Normal state (1) | 0.089 | 0.167 | 0.124 | 0.118 | 0.068 | 0.889546 | 0.009 | 0.01 | 47.9 | 1 |
| Normal state (2) | 0.093 | 0.173 | 0.136 | 0.121 | 0.079 | 0.796675 | 0.009 | 0.012 | 47.1 | 1 |
| Deviation of guide rail (1) | 0.044 | 0.242 | 0.276 | 0.171 | 0.026 | 4.139485 | 0.191 | 0.024 | 58.1 | 2 |
| Deviation of guide rail (2) | 0.041 | 0.241 | 0.285 | 0.166 | 0.024 | 3.247673 | 0.178 | 0.025 | 59.5 | 2 |
| Deviation of shape of guide shoe (1) | 0.56 | 0.294 | 0.028 | 0.031 | 0.012 | 3.173433 | 0.021 | 0.02 | 55.6 | 3 |
| Deviation of shape of guide shoe (2) | 0.534 | 0.295 | 0.027 | 0.034 | 0.018 | 4.272636 | 0.025 | 0.019 | 55.2 | 3 |
| Abnormal running of tractor (1) | 0.545 | 0.294 | 0.028 | 0.038 | 0.022 | 2.380825 | 0.021 | 0.02 | 56.4 | 4 |
| Abnormal running of tractor (2) | 0.582 | 0.273 | 0.026 | 0.036 | 0.02 | 3.567978 | 0.025 | 0.018 | 55.9 | 4 |
| Error of rope groove of traction sheave (1) | 0.814 | 0.031 | 0.022 | 0.022 | 0.024 | 3.677453 | 0.024 | 0.022 | 57.1 | 5 |
| Error of rope groove of traction sheave (2) | 0.79 | 0.026 | 0.021 | 0.024 | 0.022 | 2.824331 | 0.023 | 0.022 | 56.4 | 5 |
| Deviation of guide wheel (1) | 0.02 | 0.212 | 0.11 | 0.066 | 0.105 | 3.187661 | 0.124 | 0.1 | 53.8 | 6 |
| Deviation of guide wheel (2) | 0.022 | 0.207 | 0.108 | 0.056 | 0.105 | 2.095107 | 0.115 | 0.1 | 54.2 | 6 |
| Uniformity of tension on wire rope (1) | 0.12 | 0.525 | 0.028 | 0.118 | 0.022 | 2.109227 | 0.02 | 0.019 | 55.6 | 7 |
| Uniformity of tension on wire rope (2) | 0.124 | 0.566 | 0.028 | 0.109 | 0.021 | 3.099955 | 0.023 | 0.02 | 55.9 | 7 |
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