Research Article
On the Identification of Coupled Pitch and Heave Motions Using Opposition-Based Particle Swarm Optimization
Table 3
Parameter identification of pitch and heave motions for level 4 sea condition, ship speed 18 kn and course angle 135°.
| | Parameters | Theoretical values | PSO-w | OPSO | | Identification value | Relative error | Identification value | Relative error |
| | | | 11.77% | | 2.12% | | | | 4.96% | | 2.64% | | | | 59.95% | | 6.84% | | | | 16.44% | | 1.80% | | | | 1.01% | | 0.52% | | | | 29.88% | | 1.14% | | | | 20.90% | | 1.18% | | | | 28.72% | | 6.87% |
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