Abstract
A method of decomposing models for large-scale Automated Storage/Retrieval Systems (AS/RS) is proposed in an attempt to determine the optimum combination of warehouses and material handling systems. AS/RS which is considered in this paper comprises the automated warehouse with stacker cranes, the conveyance system and the handling systems. There are three alternatives in the conveyance system, i.e., single-track AGV (Automated Guided Vehicle) systems, looped-track AGVs system and conveyor systems. Effectiveness of the proposed approach is confirmed by performing both simulation and animation of models based upon an actual example. In addition, a procedure for obtaining the optimum combination of subsystems for constructing AS/RS warehouses is presented with numerical examples from an economic standpoint.
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