Research Article
Fault Diagnosis of Train Axle Box Bearing Based on Multifeature Parameters
Table 7
Comparison of training results of BP neural network.
| | The network input vector | Training error | Training time (s) | Training times |
| | Multiple feature parameters | 10−3 | 1 | 81 | | Time domain statistical parameters | 10−2 | 10 | 1000 | | IMF energy-torque | 10−3 | 5 | 446 | | Feature amplitude ratios of IMF envelope spectrum | 10−1 | 10 | 1000 |
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