面向再制造设计方案的去主观混合多属性决策方法

面向再制造设计(Design for remanufacturing,DfRem)是将再制造特征考虑到产品设计过程,因设计者缺乏明确定义的再制造知识,面向再制造方案决策受设计者主观偏好、经验等主观因素的影响,导致不合理决策设计方案。为了客观地得到面向再制造最优设计方案,提出一种去主观的混合多属性决策方法克服设计过程主观因素的影响。首先,通过物元理论表征设计特征与需求信息,结合设计准则得到初步设计方案,接着建立考虑技术、经济和环境因素的评价指标体系,采用熵权法和模糊集通过多属性决策得到最优设计方案。最后,以面向再制造的电机拆解机设计为案例验证上述方法的可行性与实践性,结果表明上述方法对面向再制造设计的方案决策有效可行。

Hybrid Multi-attribute Decision Making for Remanufacturing Design Based on Subjectivity Reduction

Design for remanufacturing is a process of considering the remanufacturing characteristics into production design. Due to the lack of defined remanufacturing knowledge, decision making schemes for DfRem are subjected to subjective factors, such as subjective preferences and experience of the designers, resulting in indecisive decision-making for design schemes. In order to obtain the best design scheme objectively, a hybrid multi-attribute decision making method for remanufacturing design based on subjectivity reduction is proposed. First, matter-element theory is adopted to characterize design characters and demands information. Coupled with design principles, the initial design scheme can then be obtained. Second, the evaluation criteria system is established from technical, economic and environmental perspectives. Third, entropy weight and vague set are used to obtain the optimal design scheme via multi-attribute decision-making. Finally, the design for remanufacturing of motor disassembly machine is taken as the example to demonstrate the feasibility and applicability, and the results show that the proposed method is effective and feasible.