基于Petri网的废旧产品拆卸设备设计

为了设计产品特定零部件的拆卸设备，针对废旧产品在拆卸、回收过程中的拆卸需求，提出基于Petri网构建功-构映射模型的方法. 将功-构映射进行扩展，加入需求与行为分析，构造出需求-功能映射的概念设计和功能-行为-结构映射的结构设计；对需求域、功能域和行为域进行分解，根据得到的功能表面利用TRIZ理论进行创新设计，重构出对应的结构模型；运用三角模糊数对不同创新方案进行对比评价，选出最优设计方案，实现拆卸设备从需求到功能再到结构的映射. 选取废旧自行车把手作为拆卸对象，根据扩展后的映射模型选出设计方案，设计出车把拆卸设备的结构模型.

Dismantling equipment design for scrap product based on Petri net

A method for constructing the function to structure mapping was proposed based on Petri net according to the demand of dismantling equipment in the process of dismantling and recycling scrap products, in order to design the dismantling equipment of product-specific parts. The function to structure mapping was extended, and the analysis of requirement and behavior was added to construct the conceptual design of the requirement to function mapping and the structure design of the function-behavior-structure mapping. The demand domain, functional domain and behavior domain were decomposed and the function surfaces were obtained, then the TRIZ theory was used for innovative design to reconstruct the structural model. The triangular fuzzy numbers were used to compare and evaluate different innovative schemes, and to select the best design scheme. Finally, to realize the mapping of dismantling equipment from demand to function to structure. The scrap bicycle handlebar was selected as the disassembly object, to obtain the design scheme and design the structural model of handlebar dismantling equipment according to the extended mapping model.