Original scientific paper

https://doi.org/10.17559/TV-20150218134949

Influence of initial operating conditions on technological function parameters of servicing systems - machines and devices

Ugljesa Bugaric orcid.org/0000-0003-2459-2656 ; University of Belgrade, Faculty of Mechanical Engineering, Kraljice Marije 16, 11120 Belgrade 35, Serbia
Milan Vugdelija ; Microsoft Development Center Serbia, Španskih boraca 3/3, 11070 Belgrade, Serbia
Dusan Petrovic ; University of Belgrade, Faculty of Mechanical Engineering, Kraljice Marije 16, 11120 Belgrade 35, Serbia
Dusan Glisic ; Cyberdine Systems, Molerova 35A, 11000 Belgrade, Serbia
Zoran Petrovic ; Tecon sistem d.o.o., Serbia, Antifašističke borbe 21b, 11070 Belgrade, Serbia

Abstract

In warehousing and production systems, every device or machine re-commissioning after malfunction or at the start of a new shift, leads to their non-stationary operating regime caused by a certain number of residual unprocessed units. In warehouse systems, non-stationary operating regime is common when palletized goods are stored in one (two) shifts while their production runs in two (three) shifts. Such situations influence technological function parameters (TFPs) of production or warehousing systems. On the other hand, non-stationary operating regime of a single device or machine may be modelled as a single server servicing system with a finite waiting room – M/M/1/K. As a result, general analytical integration constants expression was derived based on initial arbitrary system state probability values. Influence of initial non-stationary operating regime and its duration on warehousing system TFPs is evaluated in view of the operating conditions of an existing high bay pallet warehouse.

Keywords

M/M/1/K; operating cycle; production; transient probabilities; warehousing

Hrčak ID:

174708

URI

https://hrcak.srce.hr/174708

Publication date:

10.2.2017.

Article data in other languages: croatian

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