Evaluation of automated guided vehicle routeing strategies using hierarchical simulation

Evaluation of automated guided vehicle routeing strategies using hierarchical simulation

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Article ID: iaor19991674
Country: United Kingdom
Volume: 36
Issue: 7
Start Page Number: 1961
End Page Number: 1976
Publication Date: Jul 1998
Journal: International Journal of Production Research
Authors: , ,
Keywords: vehicle routing & scheduling, simulation: applications
Abstract:

To analyse an automated guided vehicle (AGV) system operating under selected vehicle routeing strategies, we present a simulation model that can handle an arbitary system layout as well as arbitrary numbers of AGVs and pedestrians causing congestion in the system. We introduce a dynamic vehicle routeing strategy based on hierarchical simulation that operates as follows: at the time of each AGV routeing decision in the main simulation, subordinate simulations are performed to evaluate a limited set of alternative routes in succession until the current routeing decision can be finalized and the main simulation resumed. A case study involving a prototype AGV system operating under the control of a global vision system illustrates the advantages not only of this strategy but also of global-vision-based control.

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