基于信息公理的大型水轮机方案设计多属性优选模型

Multi-attribute Optimal Selection Model of Large-Scale Hydraulic Turbine Scheme Design Based on Information Axiom

针对大型水轮机方案设计中属性信息的不确定性,研究了复杂产品方案设计的决策问题。利用公理化设计理论中的信息公理将模糊数学理论与香农信息论相结合,给出了基于信息公理的区间信息量计算过程,建立了基于区间信息量的多属性优选模型。该模型综合考虑了设计方案优选过程中各评价指标的区间权重以及相应的区间设计信息,通过比较区间信息量的大小获得最优方案。最后,以大型水轮机选型方案设计为例验证了该模型的有效性和可操作性。

Due to the incomplete and the uncertain interval attribute information in the procedure of large-scale hydraulic turbine scheme design,the decision-making problem of the complex mechanism scheme design is studied.By using the information axiom of axiomatic design,the theory of mathematics and the information theory of Shannon are combined.Based on these,the computing method of interval information content is proposed and the proposed model for the multi-attribute optimal selection of interval number is developed.By comparing the interval information content,the optimum design scheme is achieved in the whole system with integrated interval weight information content and interval design information content of various indexes.Finally,an example of large-scale hydraulic turbine scheme design is provided to validate and prove its efficiency and feasibility.