In this paper, we apply the split-platform automated storage/retrieval systems (SP-AS/RSs) (Hu et al., 2005) to store containers in the yard to improve the yard performance and to increase the utilization of the yard ...In this paper, we apply the split-platform automated storage/retrieval systems (SP-AS/RSs) (Hu et al., 2005) to store containers in the yard to improve the yard performance and to increase the utilization of the yard space. The layout of an SP-AS/RS based yard is described in detail. To achieve an efficient operation, we present a novel yard space allocation policy called the ‘second-carrier-based allocation policy’, which can help to alleviate the out-of-sequence problem of containers and the congestion of vehicles at the AS/RS racks. Different allocation policies are compared by an integrated container terminal simulation system. The simulation results show that the second-carrier-based policy is very efficient and has the potential to offer high terminal performance.展开更多
文章以BY公司新建的数字化车间中自动化立体仓库(automated storage and retrieval system,AS/RS)货位分配为研究对象,通过实际调研和咨询,针对BY公司立体仓库提出了较合理货位分配策略和优化原则,据此建立了多目标优化模型(multi-objec...文章以BY公司新建的数字化车间中自动化立体仓库(automated storage and retrieval system,AS/RS)货位分配为研究对象,通过实际调研和咨询,针对BY公司立体仓库提出了较合理货位分配策略和优化原则,据此建立了多目标优化模型(multi-objective optimization,MOP)。基于遗传算法进行算子设计,结合Sheffield遗传算法工具箱,用Matlab进行编程实现,并用实例求解计算得出货位分配方案。研究结果表明,无论是在提高货架稳定性、使货架横向受力均匀,还是提高出库效率方面都有了较大的改善,能满足公司安全生产和高效作业的要求。展开更多
基金the Agency for Science, Technology and Research, the Maritime and Port Authority,and Nanyang Technological University, Singapore
文摘In this paper, we apply the split-platform automated storage/retrieval systems (SP-AS/RSs) (Hu et al., 2005) to store containers in the yard to improve the yard performance and to increase the utilization of the yard space. The layout of an SP-AS/RS based yard is described in detail. To achieve an efficient operation, we present a novel yard space allocation policy called the ‘second-carrier-based allocation policy’, which can help to alleviate the out-of-sequence problem of containers and the congestion of vehicles at the AS/RS racks. Different allocation policies are compared by an integrated container terminal simulation system. The simulation results show that the second-carrier-based policy is very efficient and has the potential to offer high terminal performance.