Intelligent disassembly sequence planning for EOL recycling based on hierarchical fuzzy cognitive map

In order to reduce the pollution of wasted products on the environment, improve the disassemblability of product, and recycle, reuse or remanufacture the wasted products effectively, disassembly sequence planning is researched in this paper. After the methods of generation on disassembly sequences are analyzed, the concept and mathematical model of the hierarchical fuzzy cognitive map (HFCM) is proposed. The HFCM disassembly model can clearly express the relationship among the parts, and the method of HFCM can simplify the computational process of reasoning, generate the feasible disassembly sequences. Finally, the fan electromotor accessory with fifteen parts in air-condition is exemplified to show the establishment of disassembly model and computational process of generation of disassembly sequences.