关键词: 可持续, 闭环供应链, 改进Epsilon约束, 交互式可能性规划, TH模糊规划

Abstract: Under the condition of uncertain market demand, facility cost and product recovery rate, an interactive possibility planning method is adopted to study the design of sustainable closed-loop supply chain network composed of multiple factories, distribution points, markets and waste points. Based on the sustainable closed-loop supply chain network structure, a mixed integer programming model is constructed, which aims to minimize the operation cost and environmental damage, and maximize the social benefits. At the same time, the improved epsilon constraint method is introduced to transform the multi-objective optimization problem into the single-objective optimization problem. On this basis, a two-stage possibility programming method is proposed, which uses TH fuzzy method to deal with the uncertain parameters. A numerical example is used to verify the effectiveness of the sustainable closed-loop supply chain network model established in this paper. At the same time, sensitivity analysis is carried out for pessimistic optimistic value, the lowest acceptable level of uncertain parameters and adjustable parameters. Comparison with other fuzzy methods shows that the TH fuzzy method adopted in this paper can obtain stable optimal solution.

Key words: sustainable, closed-loop supply chain, improved epsilon constraint, interactive possibility planning, TH fuzzy programming