Heuristics to optimize total completion time subject to makespan in no-wait flow shops with sequence-dependent setup times
针对带顺序相关准备时间的无等待流水车间调度问题,提出了四种启发式算法,在保证最大完工时间不超过给定上限的前提下最小化总完工时间。实验表明,其中IG4算法的平均相对偏差仅为0.36%,显著优于现有方法。
We propose four algorithms for the no-wait flow shop scheduling problem. The objective is minimizing total completion time such that makespan is not greater than a maximum value. We address the problem with sequence-dependent setup times, an important production constraint that has never been considered for this problem before. The proposed algorithms start from an initial solution and then iterate through a process that destroys and repairs the incumbent solution in order to improve it. The methods are build combining distinct destruction and construction mechanisms, where the search intensification-diversification is explored at different levels. After an initial assessment, the best proposed algorithm (IG4) is chosen to be compared with three literature methods (PAL, TOB, ISA-2) developed for similar problems. Computational experiments revealed that the overall average relative percentage deviation of PAL, TOB, ISA-2, and IG4 are 10.97%, 4.44%, 2.07%, and 0.36%, respectively. The statistical analysis confirms that IG4 significantly outperforms the existing methods.