PROBLEM TO BE SOLVED: To provide a vessel speed calculation device and a vessel speed calculation method which can reliably calculate an optimum solution which satisfies constraint conditions.SOLUTION: A vessel speed distribution optimizing device divides a sea route from a departure point to an arrival point into a plurality of intervals in a pseudo manner, and calculates a vessel speed for each of the intervals. The vessel speed distribution optimizing device sets a target navigation time from the departure time to the arrival time and a maximum vessel speed and a minimum vessel speed per interval as constraint conditions. The vessel speed distribution optimizing device, by setting a vessel speed per interval as a control variable, and setting a fuel consumption from the departure point to the arrival point as an object function, calculates the a vessel speed per interval at which the object function is set to be minimum as an optimum solution (S102). But, when the optimum solution is not calculated (104), the vessel speed distribution optimizing device gives tolerance to the target navigation time, and makes a backup calculation in which a vessel speed per interval at which the object function is set to be minimum is an optimum solution (S110).SELECTED DRAWING: Figure 6

    【課題】制約条件を満たす最適解をより確実に算出する船速算出装置及び船速算出方法を提供する。【解決手段】船速配分最適化装置は、出発地点から到着地点までの航路を疑似的に複数の区間に分け、該区間毎の船速を算出する。船速配分最適化装置は、出発地点から到着地点に達するまでの目標航海時間、並びに区間毎の最大船速及び最小船速を制約条件として設定する。そして、船速配分最適化装置は、区間毎の船速を制御変数とされ、出発地点から到着地点に達するまでの燃料消費量を目的関数とされ、目的関数を最小とする区間毎の船速を最適解として算出する(S102)。しかし、最適解が算出されなかった場合(104)、船速配分最適化装置は、目標航海時間に裕度を持たせ、目的関数を最小とする区間毎の船速を最適解とするバックアップ計算を行う(S110)。【選択図】図6


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    Titel :

    VESSEL SPEED CALCULATION DEVICE AND VESSEL SPEED CALCULATION METHOD


    Weitere Titelangaben:

    船速算出装置及び船速算出方法


    Beteiligte:
    NAKA TAKEHIRO (Autor:in) / YASHIRO YUSUKE (Autor:in)

    Erscheinungsdatum :

    2016-05-16


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS



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