关键词: 多层车间, 自动存取系统, 自动导引小车, 排队网络, 启发式算法

Abstract: To adapt to the competitive market environment and save business costs,the design problems of material handling system in the multi-floor workshops were becoming increasingly critical.Aiming at the optimization of vehicle configuration of autonomous vehicle storage and retrieval system in multi-floor workshop of customized equipment manufacturing enterprises,an optimization method was proposed that combined queuing network analysis model with heuristic algorithm.An optimization model with dual constraints of throughput rate and the number of idle  AGV was established,which took minimizing the investment cost of Automatic Guided Vehicle (AGV) as the objective function.A queuing network model was proposed to analyze the performance indexes which had no closed mathematical expression,and the configuration of AGV was optimized by embedding queuing network model into heuristic algorithms.The effectiveness and accuracy of the proposed method were verified by comparing the results of calculation examples with the results of simulation experiments.

Key words: multi-floor workshop, autonomous vehicle storage and retrieval system, automatic guided vehicle, queuing network, heuristic algorithms