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- Title
A study of the flexible job shop scheduling problem with parallel machines and reentrant process.
- Authors
Chen, J. C.; Chen, K. H.; Wu, J. J.; Chen, C. W.
- Abstract
This paper develops a scheduling algorithm for the job shop scheduling problem with parallel machines and reentrant process. This algorithm includes two major modules: the machine selection module (MSM) and the operation scheduling module (OSM). An order has several jobs and each job has several operations in a hierarchical structure. The MSM helps an operation to select one of the parallel machines to process it. The OSM is then used to schedule the sequences and the timing of all operations assigned to each machine. A real-life weapons production factory is used as a case study to evaluate the performance of the proposed algorithm. Due to the high penalty of delays in military orders, the on-time delivery rate is the most important performance measure and then makespan is the next most important measure. Well-known performance measures in the scheduling literature, such as maximum lateness and average tardiness, are also evaluated. The simulation results demonstrate that the MSM and OSM using the combination of earliest due date (EDD), the operations’ lowest level code (LLC) of the bill of materials (BOM), and the longest processing time (LPT) outperforms the other scheduling methods.
- Subjects
MANUFACTURING processes; PRODUCTION scheduling; AUTOMATION; ALGORITHMS; BILL of materials
- Publication
International Journal of Advanced Manufacturing Technology, 2008, Vol 39, Issue 3/4, p344
- ISSN
0268-3768
- Publication type
Article
- DOI
10.1007/s00170-007-1227-1