Watcharapan Sukkerd.. Hybrid genetic algorithm and tabu search for finite capacity material requirement planning system in flexible flow shop with assembly operations. Doctoral Degree(Industrial Engineering). King Mongkut's University of Technology North Bangkok. Central Library. : King Mongkut's University of Technology North Bangkok, 2016.
Hybrid genetic algorithm and tabu search for finite capacity material requirement planning system in flexible flow shop with assembly operations
Abstract:
This research presents a hybrid of genetic algorithm (GA) and tabu search (TS) called HGATS for the FCMRP system in an assembly flow shop with assembly operations. There are six main steps in the proposed HGATS algorithm. In step 1,
a production schedule is generated by variable lead-time MRP (VMRP). In step 2, dispatching rules are applied to generate initial sequences of orders. From step 3
to step 5, the sequences of orders are repeatedly improved by characteristics of TS and GA. Finally, the start times of operations are optimally determined by the LP model. Three industrial cases are used to evaluate the effectiveness of HGATS.
The result shows that HGATS outperforms GA, TS and the existing algorithm based on total cost and makespan. Furthermore, HGATS requires a practical computational time when applied to real industrial cases.