关键词: 自动导引小车, 柔性流水车间, 排队网, 状态空间分解法

Abstract: To efficiently analyze the performance of flexible flow shop with non-equivalent parallel Automatic guided vehicle (AGV),an open queuing network model with finite buffers based on stochastic process theory was established by taking the uncertainty of manufacturing system as well as the randomness of AGV transporting lot size fully into consideration.An improved state space decomposition method was proposed,and the state-space model was built to analyze the coupling effect between non-identical parallel AGVs and work units before and after them on this basis.The state transferring discipline was analyzed with Markov process theory.An iteration algorithm and the calculation method of system performance were proposed.The example results were compared with the statistical results of simulation model as well as the former researches to validate the accuracy of the improved state space decomposition method,and the sensitivity analysis for the system performance were also implemented.

Key words: automatic guided vehicle, flexible flow shop, queuing network, state space decomposition