基于遗传算法的半潜式平台动力定位系统动态约束可行域推力分配法

Genetic Algorithm is applied to thrust allocation of semi-submersible platform dynamic positioning system. To guarantee propeller爷s physical performance, thrust change and propeller thrust angle change as parameters are adopted to build an optimal model which is based on minimizing energy consumption. To avoid the thrust loss due to the propeller's affection, traditional thrust forbidden zone is improved. Considering thrust loss model, all propellers are divided into groups and each propeller's thrust angle is partitioned. Then the downstream propeller's thrust feasible region is set, which is determined by the upstream propeller's thrust angle. The numerical model indicates that GA can be used to handle complex boundary condition, and dynamical thrust angle feasible region is helpful to minimize thrust loss, reduce energy consumption and increase maneuverability.