基于灰色关联分析的复杂产品方案设计多属性权重分配模型

摘要

针对复杂产品方案设计中设计属性信息的不完全性和约束性,提出了一种基于灰色关联分析的多属性权重分配模型。该方法首先通过灰色关联分析获得与设计属性有关的设计约束的重要度,然后分别以任一设计约束为评判准则,计算设计属性与各设计约束间的关联系数,得到相应的关系矩阵,进而在设计约束重要度和关系矩阵的基础上获得设计属性的权重。最后,通过大型水轮机的方案设计验证了该模型的有效性和实用性。%Due to the incomplete and the restricted design attribute information in the procedure of the complex mechanism scheme design,a computing model of multi-attribute weights allocation based on grey relational analysis is proposed.First,grey relational analysis is carried out to get the importance rating of the design constraints.Then,by regarding each design constraint as the judgement code,the relational coefficients and the corresponding relational matrix between the design constraints and the design attributes are obtained.Based on these,the weights of each design attribute is determined.Finally,an example of large-scale hydraulic turbine scheme design is provided to validate and prove its efficiency and feasibility.