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Workload control and optimised order release: an assessment by simulation

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  • Nuno O. Fernandes
  • Matthias Thürer
  • Tatiana M. Pinho
  • Pedro Torres
  • Sílvio Carmo-Silva

Abstract

An important scheduling function of manufacturing systems is controlled order release. While there exists a broad literature on order release, reported release procedures typically use simple sequencing rules and greedy heuristics to determine which jobs to select for release. While this is appealing due to its simplicity, its adequateness has recently been questioned. In response, this study uses an integer linear programming model to select orders for release to the shop floor. Using simulation, we show that optimisation has the potential to improve performance compared to ‘classical’ release based on pool sequencing rules. However, in order to also outperform more powerful pool sequencing rules, load balancing and timing must be considered at release. Existing optimisation-based release methods emphasise load balancing in periods when jobs are on time. In line with recent advances in Workload Control theory, we show that a better percentage tardy performance can be achieved by only emphasising load balancing when many jobs are urgent. However, counterintuitively, emphasising urgency in underload periods leads to higher mean tardiness. Compared to previous literature we further highlight that continuous optimisation-based release outperforms periodic optimisation-based release. This has important implications on how optimised-based release should be designed.

Suggested Citation

  • Nuno O. Fernandes & Matthias Thürer & Tatiana M. Pinho & Pedro Torres & Sílvio Carmo-Silva, 2020. "Workload control and optimised order release: an assessment by simulation," International Journal of Production Research, Taylor & Francis Journals, vol. 58(10), pages 3180-3193, May.
  • Handle: RePEc:taf:tprsxx:v:58:y:2020:i:10:p:3180-3193
    DOI: 10.1080/00207543.2019.1630769
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    Cited by:

    1. Kasper, T.A. Arno & Land, Martin J. & Teunter, Ruud H., 2023. "Non-hierarchical work-in-progress control in manufacturing," International Journal of Production Economics, Elsevier, vol. 257(C).
    2. Kaustav Kundu & Martin J. Land & Alberto Portioli-Staudacher & Jos A. C. Bokhorst, 2021. "Order review and release in make-to-order flow shops: analysis and design of new methods," Flexible Services and Manufacturing Journal, Springer, vol. 33(3), pages 750-782, September.
    3. Kasper, T.A. Arno & Land, Martin J. & Teunter, Ruud H., 2023. "Towards System State Dispatching in High‐Variety Manufacturing," Omega, Elsevier, vol. 114(C).
    4. Matthias Thürer & Mark Stevenson, 2021. "Material handling and order release control in high-variety make-to-order shops: an assessment by simulation," Operations Management Research, Springer, vol. 14(3), pages 494-506, December.

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