Journal of Northeastern University Natural Science ›› 2018, Vol. 39 ›› Issue (9): 1315-1320.DOI: 10.12068/j.issn.1005-3026.2018.09.020

• Mechanical Engineering • Previous Articles     Next Articles

Column Generation Scheduling Algorithm of Reentrant Hybrid Flow Shops(RHFS) with Queue Constraints

ZHOU Bing-hai, WANG Ke   

  1. School of Mechanical Engineering, Tongji University, Shanghai 201804, China.
  • Received:2017-05-18 Revised:2017-05-18 Online:2018-09-15 Published:2018-09-12
  • Contact: ZHOU Bing-hai
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Abstract: To effectively enhance the production efficiency of multi-reentrant workshop, the queue constraint was considered where products were processed layer by layer, and then a scheduling method of reentrant hybrid flow shops(RHFS)was proposed based on column generation algorithm. Firstly, a two-stage scheduling model of RHFS was described and a mathematical programming model was built with an objective of minimizing the total completion time. A column generation algorithm was developed and dynamic programming with multiple decision-making was designed to solve each sub-problem. Further, the adaptive accelerating strategy was applied to effectively improve the algorithm convergence. In the process of generating integral solutions by using branch-and-bound method, column pool was built and neighborhood mutation method was emploied. Finally, numerical experiments in different problem scales were carried out to analyze the proposed algorithm. Results verify the validness and feasibility of the proposed algorithm.

Key words: queue, reentrant, column generation, dynamic programming, branch-and-bound

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