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1 Foundations of Computing and Decision Sciences

1 2011

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Petri net implementation in queue algorithms analysis for flexible manufacturing systems

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Jardzioch A. , Skobiej B.

tom Vol. 36, No. 3-4

207-217

This paper presents practical implementation of computer support for an effectiveness analysis of queue algorithms in flexible manufacturing systems (FMSs). A proposed model, based on hierarchical timed coloured Petri net (HTCPN) formalism, is used as a simulation instrument. Implementation of various queue methods has been successfully deployed and tested: due time, minimum makespan, maximum makespan, minimum time reserve and random queue as a reference solution. This comprehensive study of the given queue algorithms investigates the interference with order completion time, global production time and machine loading problems. As a result of conducted studies, based on simulation model, the estimated ratio of effectiveness, described as the criterion fulfilment of production system controlled by the given algorithm, for each of the proposed queue methods has been presented as well as further possible improvements proposals.