关键词: 产品服务系统, 产品设计, 生命周期, 设计方案决策, 信息熵, 模糊层次分析法

Abstract: In order to promote sustainable development of production and consumption, overall scheme was designed and optimized by view of production/service integration. Connotations of decision-making for overall design alternative of full product under life cycle were analyzed. Evaluation system was established for decision-making of full product design alternatives, including quantitative specification indexes, qualitative performance indexes, and economic indexes. To cope with the subjective uncertainty of qualitative indexes and ensure objectivity of quantitative indexes, information entropy and fuzzy analytic hierarchical process were used to obtain index weights. Evaluation values of design alternatives under qualitative indexes were determined from the specification values, while those values under quantitative indexes were obtained by using group decision-making method. Ranking of design alternatives was carried out by using the method of Technique for Order Preference by Similarity to Ideal Solution (TOPSIS). The proposed approach was used in decision-making on overall design alternatives of horizontal directional drilling machine. The effects of different linguistic quantifiers and decision-making risks were also analyzed. Results showed that the proposed method was applicable to decision-making for overall design alternative of full product under life cycle.

Key words: product service system, product design, life cycle, design alternative selection, information entropy, fuzzy analytical hierarchical process, horizontal directional drilling machine