Research Article
Research on Vibration Fatigue Damage Locations of Offshore Oil and Gas Pipelines Based on the GA-Improved BP Neural Network
Table 11
Location results of the noiseless GA-BP neural network.
| Test conditions | Actual position (mm) | Identification results (MM) | Absolute error (mm) | Relative error (%) |
| 1 | 5790 | 5746.79 | 43.21 | 0.73 | 2 | 5240 | 5213.76 | 26.24 | 0.44 | 3 | 4790 | 4835.52 | 45.52 | 0.77 | 4 | 3740 | 3760.08 | 20.08 | 0.34 | 5 | 3690 | 3789.18 | 99.18 | 1.67 | 6 | 2990 | 3078.15 | 88.15 | 1.48 | 7 | 2240 | 2289.83 | 49.83 | 0.84 | 8 | 1790 | 1834.18 | 44.18 | 0.74 | 9 | 1690 | 1794.06 | 104.06 | 1.75 | 10 | 946.5 | 1052.00 | 105.50 | 1.78 | 11 | 550 | 628.03 | 78.03 | 1.31 | Average | ā | ā | 64.00 | 1.08 |
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