Research on Vibration Fatigue Damage Locations of Offshore Oil and Gas Pipelines Based on the GA-Improved BP Neural Network

Table 8

BP neural network location results with (%) noise.

Test conditions	Actual position (mm)	Identification results (MM)	Absolute error (mm)	Relative error (%)
1	5790	5436.00	354.00	5.96
2	5240	5207.00	33.00	0.56
3	4790	4793.96	3.96	0.07
4	3740	3690.84	49.16	0.83
5	3690	3405.37	284.63	4.79
6	2990	3047.23	57.23	0.96
7	2240	2246.63	6.63	0.11
8	1790	1894.31	104.31	1.76
9	1690	1716.82	26.82	0.45
10	946.5	965.76	19.26	0.32
11	550	384.30	165.70	2.79
Average	—	—	100.43	1.69