Research on Thrust Allocation Of Ship Dynamic Positioning System Under Extreme Sea Environment

摘要

The thrust allocation of a ship dynamic positioning system allocates therncontrol force to thrusters by calculating thrust and angle of eachrnthruster. Under extreme sea environment such as gust, the output valuernof control force is usually beyond the ability of thrusters resulting inrnthe fault of thrust allocation. To solve this problem, a method ofrnreducing all the generalized forces with the same scale factor which isrnobtained based on multiobjective optimization is proposed in this paper.rnSimulation results show that the proposed thrust allocation method isrnefficient in extreme sea environment.