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South African Journal of Industrial Engineering

versión On-line ISSN 2224-7890
versión impresa ISSN 1012-277X

S. Afr. J. Ind. Eng. vol.20 no.2 Pretoria  2009

 

Simulation-based online scheduling in a make-to-order job shop

 

 

D. KrigeI; J. BekkerII; C. SchutteIII

IDepartment of Industrial Engineering, University of Stellenbosch, South Africa david.krige@justenough.com
IIDepartment of Industrial Engineering, University of Stellenbosch, South Africa jb2@sun.ac.za
IIIDepartment of Industrial Engineering, University of Stellenbosch, South Africa corne@sun.ac.za

 

 


ABSTRACT

Scheduling is a core activity in the manufacturing business. It assists with the efficient and effective utilisation of capital-intensive resources and increased throughput, thus increasing profitability. Simulation is appealing in manufacturing, as it can realistically imitate dynamic, stochastic processes while being descriptive in predicting the future process. We combined simulation and scheduling and developed an online simulation-based scheduler for manufacturing orders in a South African make-to-order job shop enterprise. There are frequent changes in this type of environment, including random arrivals of orders with stochastic processing times. A simulation-based scheduler is applicable in this myopic, stochastic environment, and we demonstrate its use under these conditions.


OPSOMMING

Skedulering is 'n kern-aktiwiteit in 'n vervaardigingsonderneming. Dit ondersteun doeltreffende en effektiewe benutting van kapitaal-intensiewe hulpbronne asook verhoogde produksiedeurset, wat weer wins verhoog. Simulasie is van nut in vervaardiging omdat dit dinamiese, stogastiese prosesse realisties kan naboots terwyl dit die prosestoekoms op beskrywende wyse toon. Simulasie en skedulering is gekombineer in hierdie projek om 'n simulasiegebaseerde skeduleerder te ontwikkel vir bestellings in 'n maak-op-aanvraag werkwinkel. Veranderings vind gereeld in hierdie tipe omgewing plaas, en sluit toevallige aankomste van bestellings met stogastiese prosestye in. 'n Simulasiegebaseerde skeduleerder is toepaslik in hierdie stogastiese, korttermyn-omgewing, en die werking van die skeduleerder word in hierdie omstandighede gedemonstreer.


 

 

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1 The author was enrolled for an MSc Eng (Industrial) degree in the Department of Industrial Engineering, University of Stellenbosch.
2 Corresponding author

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