Remanufacturing Production Planning Based on Credibility Theory in Fuzzy Environments

Aiming at production planning of remanufacturing system,the characteristics of remanufacturing system is analysed.Using general remanufacturing system as the prototype,and aiming at minimizing total cost,a mixed integer programming model for fuzzy remanufacturing system is established.The model considers uncertainty of recoverable product quantity,time to disassemble a product,time to remanufacture a component,and customer demand.Recovery,disassembly,remanufacturing,reassembly all have constraints of capacity.The crisp equivalence of fuzzy model is analysed using credibility theory.Finally,the influence of confidence level selection in remanufacturing system cost is analysed through numerical examples,which prove the model is effective for remanufacturing facilities.