Abstract: Aiming at the problem that the resources could not be recycled effectively because of the products being out-of-date or getting phased out, the requirements of the remanufacturing and upgrading performance of mechanical products were studied, a method of product green module partition based on design structure matrix was proposed. The green properties of remanufacturing upgrade, such as function, structure, recycling mode and so on, were defined for the product parts. And the weight of each attribute was obtained according to the analytic hierarchy process (AHP), on which basis the comprehensive correlation matrix of product parts was established. According to the requirements of product design, economy and environment, the whole link hierarchical clustering method was used to cluster the modules, and a remanufacturing and upgrading module partition scheme of mechanical products was obtained. The feasibility of the proposed method was verified by taking the permanent magnet synchronous traction machine as the research object. The results indicate that this method can effectively divide the remanufacturing and upgrading modules of mechanical products. The internal parts of the modules are closely connected and have a high degree of assembly. And the modules are highly independent and they are easy to remanufacture and upgrade mechanical products.

Key words: remanufacturing upgrade; design structure matrix; product green module partition; whole link hierarchical clustering method