3D based multi objective cooperative disassembly sequence planning method for remanufacturing
Large scale and high efficiency disassembly is an important means to improve the efficiency and benefits of remanufacturing of waste products. This paper proposes a 3D based multi objective collaborative disassembly sequence planning method for remanufacturing products, which can effectively improve efficiency of the disassembly line. Firstly, combining entropy weight method and PROMETHEE II method, the priority disassembly level of the waste product parts is established. According to the disassembly level ranking of the parts, one or more target disassembly parts with higher priority are selected. Secondly, rapid growing random tree algorithm is used to layer the three dimensional product assembly structure, and the disassembly sequence of the single objective part is calculated by the constraint relationship of different layer parts. Finally, the co evolution algorithm is used to coordinate multiple single objective part disassembly sequences to obtain the overall optimal multi objective part disassembly sequence, which is the sequence plan with the minimum required number of disassembly parts. Through the disassembly case analysis of two stage reducer, the correctness and effectiveness of the planning method for coordinated disassembly of multi objective parts are verified.