采用自由搜索(free search,FS)算法对单机差异工件批调度问题的制作跨度进行优化。针对该问题的离散优化特征以及自由搜索算法的不足,将自由搜索算法与实数编码遗传算法相结合,在标准FS算法的基础上引入两种杂交算子和精英保留策略,提出混合自由搜索(hybrid free search,HFS)算法。仿真实验结果表明,该算法表现出良好的鲁棒性和收敛性,与标准FS、FFLPT以及BFLPT算法相比,HFS算法提高了寻优精度。
Research on free search algorithm for minimize the makespan on a single batch-processing machine with non-identical job sizes. For the discrete optimization problem and the disadvantage of free search algorithm,this paper combined real-coded genetic algorithm with free search algorithm. Propounded a hybrid free search algorithm including two crosser operators and elitist strategy. The simulation results demonstrate that the proposed algorithm outperforms other algorithms.