Research Article
On the Identification of Coupled Pitch and Heave Motions Using Opposition-Based Particle Swarm Optimization
Table 4
Parameter identification of pitch and heave motions for level 4 sea condition, ship speed 18 kn and course angle 180°.
| | Parameters | Theoretical values | PSO-w | OPSO | | Identification value | Relative error | Identification value | Relative error |
| | | | 4.69% | | 0.77% | | | | −5.16% | | 0.46% | | | | 10.03% | | 3.56% | | | | 1.30% | | 0.87% | | | | 2.14% | | 0.74% | | | | −3.79% | | 1.87% | | | | 0.25% | | 0.65% | | | | −32.57% | | 10.32% |
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