关键词: 排队网, 状态空间分解法, 装配单元, 批量物料运输系统

Abstract: In the customized equipment manufacturing system that contained both assembly process and material transportation process,owing to the coupling effect between simultaneous constraints of assembly process and random bulk transport,the state space explosion phenomenon might be generated with traditional modeling method.For this purpose,a new method based on finite buffer open queuing network with blocking was proposed.The state space model and state transfer equilibrium equation for each node were established based on continuous time Markov chain theory.The probability distribution of system was obtained by using iterative algorithm to solve the equilibrium equations of state transfer,and the calculation method of system performance was proposed.The results were compared with the statistical results of simulation model,and the accuracy of state space decomposition method was verified,which provided the basis for the optimal allocation of system resources.

Key words: queuing network, state space decomposition, assembly unit, bulk material handling system