Citation
Scheduling optimization of a real flexible job shop including side constraints regarding maintenance, ?xtures, and night shifts. In proceedings of the 7th Multidisciplinary International Conference on Scheduling : Theory and Applications (MISTA 2015), 25 - 28 Aug 2015, Prague, Czech Republic, pages 78-101, 2015.
Paper
Abstract
We present a generic iterative procedure for the scheduling of a real ?exible job shop, the so-called multitask cell at GKN Aerospace Engine Systems in Sweden. A time-indexed formulation of the scheduling problem is presented—including side constraints regarding preventive maintenance, ?xture availability, and unmanned night shifts. This paper continues the work in ”Scheduling optimisation of a real ?exible job shop including ?xture availability and preventive maintenance” [Tho¨rnblad et al., European Journal of Industrial Engineering, to appear, 2015], with an improvement of the iterative solution procedure, and the inclusion of constraints regarding night shifts during which only unmanned processing is allowed to be scheduled. Schedules resulting from our procedure and from the use of two priority dispatching rules are compared. The gain of including the night shifts constraints is signi?cant. Despite the added complexity, our methodology produces near-optimal schedules for industrial data instances for the coming shift within an acceptable practical time frame.
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Bibtex
@INPROCEEDINGS{2015-078-101-P, author = {K. Thornblad and A-B. Stromberg and M. Patriksson and T. Almgren},
title = {Scheduling optimization of a real flexible job shop including side constraints regarding maintenance, ?xtures, and night shifts},
booktitle = {In proceedings of the 7th Multidisciplinary International Conference on Scheduling : Theory and Applications (MISTA 2015), 25 - 28 Aug 2015, Prague, Czech Republic},
year = {2015},
editor = {Z. Hanzalek and G. Kendall and B. McCollum and P. Sucha},
pages = {78--101},
note = {Paper},
abstract = {We present a generic iterative procedure for the scheduling of a real ?exible job shop, the so-called multitask cell at GKN Aerospace Engine Systems in Sweden. A time-indexed formulation of the scheduling problem is presented—including side constraints regarding preventive maintenance, ?xture availability, and unmanned night shifts. This paper continues the work in ”Scheduling optimisation of a real ?exible job shop including ?xture availability and preventive maintenance” [Tho¨rnblad et al., European Journal of Industrial Engineering, to appear, 2015], with an improvement of the iterative solution procedure, and the inclusion of constraints regarding night shifts during which only unmanned processing is allowed to be scheduled. Schedules resulting from our procedure and from the use of two priority dispatching rules are compared. The gain of including the night shifts constraints is signi?cant. Despite the added complexity, our methodology produces near-optimal schedules for industrial data instances for the coming shift within an acceptable practical time frame.},
owner = {Graham},
timestamp = {2017.01.16},
webpdf = {2015-078-101-P.pdf} }