多目标多层次船型方案模糊优选法

Model for Multi-objects and Multi-layers System for Ship Form Fuzzy Optimization

船型方案优选是一个多目标、多层次并含有模糊信息的决策问题 ,需要考虑的因素往往很多。本文通过划分相互关联的有序层次结构使问题条理化 ,然后利用文献 [1 ]与文献 [2 ]提出的模糊模式识别理论模型与模糊关系优选理论模型 ,以低层次的输出作为高层次的输入 ,对每一层次的单元系统进行优选计算 ,最后利用级别向量的特征值进行排序 ,对船型方案进行优选。算例说明 ,模型建立正确 ,计算结果可信 ,各方案的综合评判值离散性大。

The optimal selection of ship forms is a multi-objects and multi-layers fuzzy evaluation problem, therefore there are many factors which should be taken into account. In this paper, the objects are separated into interrelated parts to make the problem consecutive, then using the Fuzzy Pattern Recognition model and Fuzzy Optimization theory brought forward by references[1] and [2], every layer cell system is calculated by inputting the output of the lower into the higher. Lastly, by means of the eigenvalues of different calsses vectors, sequence of all the schemes is arranged and optimal selection for ship forms is performed. The example given in this paper shows that the model is reasonable with the credible results and high discrete judged values. It provides a reference for choosing a ship form reasonably.