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	—	—	64.00	1.08