浮船坞实时配载模型及算法

Modeling and algorithm study for real time adjustment of floating dock′s loading

探讨优化方法在浮船坞浮态实时调节中的应用.结合工程实际问题,依据静力学力平衡原理,以实际工程需要为目标,以各调节水舱实时水位为自变量,建立浮船坞实时配载优化模型.针对该模型,采用惩罚函数法求解,求解过程中运用了Pow e ll直接搜索法和成功-失败法.计算结果表明,算法中搜索起点的改变会对调水方案有所影响,但最优目标值非常接近.同时,该方法简便可行,可显著提高工作效率.特别是,该方法可以方便地考虑潮水水位变化对浮船坞浮态调节的影响,更适于实际应用.

The model and optimization algorithm in real time adjustment of floating dock＇s floatation are studied. According to the condition of engineering projects, regarding the needs of real engineering projects as the target and the water level of the tank for adjustment as independent variable, the real time loading model of the floating dock could be established on the basis of the static balance principles. Consequently, an optimization model related to real engineering problem is established and solved by penalty technique. Accordingly, the Powell and Success-Failure methods are applied to this problem-solving process. It is demonstrated that water coordinating scheme would be affected by the change of jumping-off point for searching, but the target values optimized are very close to each other in the calculation results. Obviously the approach given here is convenient and feasible. Furthermore, the work efficiency can be improved and the change of tide can be easily considered for real engineering project.