船舶群行動シミュレーション : 自律型群行動モデルの出力特性

概要

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This paper deals with a marine traffic simulation based on an autonomous ship cluster behavior model in which each vessel's maneuvering decision is made by taking into consideration four independent forces that act on it, namely, goal attainment, centripetal, collision avoidance, and following forces. The compositional force, which determines each vessel's behavior, is calculated based on the four forces with a specific weight function for each. The weight functions in the present paper were designed so that (1) they could reflect ship operators' individual differences with respect to safety precaution by introducing smooth, non-linear curves, and (2) the same simulation result could be obtained when the ratio of the outputs of these four functions were the same. The ranges of the simulation parameters were determined so that they would reflect realistic ship operation environment. Nine thousand and six hundred cases were simulated varying the number of ships, initial interval between ships, weights of the centripetal, collision avoidance, and following forces. The influences of the simulation parameters on the mean distance between ships, the collision ratio, aspect ratio and the collision limit parameter region are discussed. The results should contribute to an optimal parameter setting for the ship cluster behavior simulator to be built in the future.
社団法人日本航海学会の論文
2003-09-25