Research Article
A Thrust Allocation Method for Efficient Dynamic Positioning of a Semisubmersible Drilling Rig Based on the Hybrid Optimization Algorithm
Table 1
Summary of related studies and comparison with this study.
| Studies | Application | Optimization algorithm | Design variables for formulation | Consideration of thruster interaction |
| Wit [5] | Ship | Local algorithm (QP) | Thrust and azimuth direction | ◯ |
| Liang and Cheng [6], Johansen et al. [7] | Ship | Local algorithm (SQP) | Thrust and azimuth direction | × |
| Parikshit [8] | Drilling rig | Global algorithm (GA, ITHS, etc.) | Thrust and azimuth direction | ◯ |
| Zhao et al. [9] | Drilling rig | Global algorithm (GA) | Thrust and azimuth direction | ◯ |
| This study | Drilling rig | Global algorithm (hybrid optimization algorithm) | Rotation speed and azimuth direction | ◯ |
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