The invention discloses a ship floating state calculation method based on a quasi-Newton method in a stowage instrument, and belongs to the technical field of ship stowage calculation. The method comprises the following steps: establishing a ship body coordinate system; reading the total displacement and barycentric coordinates of the ship; establishing a ship floating state balance equation set; the method comprises the following steps: iteratively calculating the drainage volume and buoyancy center coordinates of a ship in a current floating state, judging whether an iteration termination condition is met or not, carrying out successive linearization on a ship floating state balance model to obtain a successive linearization model, obtaining a final Jacobian coefficient by utilizing a quasi-Newton method, and calculating the drainage volume and buoyancy center coordinates of the ship in the current floating state by solving delta Ti, delta theta i and # imgabs0 #. And judging whether an iteration termination condition is met or not. Compared with the prior art, the method is suitable for any floating state of the ship, ship heeling is considered, and the calculation precision is high; ship waterplane parameters do not need to be calculated, and implementation is easy; the method is suitable for ships with various square coefficients; the convergence speed is high, convergence can be achieved only through 2-3 times of iteration, and the method is suitable for real-time calculation of the ship stowage instrument.

    本发明公开了一种配载仪中基于拟牛顿法的船舶浮态计算方法,属于船舶配载计算技术领域。它包括以下步骤:建立船体坐标系;读取船舶总排水量及重心坐标;建立船舶浮态平衡方程组;迭代计算当前浮态下船舶排水体积及浮心坐标,判断是否满足迭代终止条件,对船舶浮态平衡模型逐次线性得逐次线性化模型,利用拟牛顿法,得最终雅克比系数,求解δTi、δθi、#imgabs0#计算当前浮态下船舶排水体积及浮心坐标,判断是否满足迭代终止条件。相比于现有技术,本发明适用于船舶任意浮态,考虑船舶横倾,计算精度高;不需要计算船舶水线面参数,易于实现;适用于各种方形系数的船舶;收敛速度较快,仅需2‑3次迭代就收敛,适用于船舶配载仪实时计算。


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    Titel :

    Ship floating state calculation method based on quasi-Newton method in stowage instrument


    Weitere Titelangaben:

    一种配载仪中基于拟牛顿法的船舶浮态计算方法


    Beteiligte:
    LIU CHUNLEI (Autor:in) / YIN YONG (Autor:in) / LI ZHENBAO (Autor:in) / SUN XIAOFENG (Autor:in) / LIU HUAN (Autor:in)

    Erscheinungsdatum :

    19.04.2024


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

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



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