目的 针对B2C电商分散存储策略下的订单拣选问题,研究同一SKU(库存量单位)在多个存储货位下的拣选优化方法,以缩短拣选路径、提高仓库的作业效率。方法 将分散存储策略下的储位选择与路径规划问题拆解为两阶段求解,提出最小增量-局部贪婪算法(MILG)进行储位选择,结合离散粒子群优化算法(PSO)完成路径规划。针对实际拣选的动态需求,引入质心法对储位选择机制进行优化,形成改进的两阶段拣选算法(MILG*-PSO)。结果 改进算法在不同分散存储策略下均提升了拣选效率,路径长度的平均改进率能够达到10.64%,最大的改进率为20.75%。结论 该方法在“人到货”作业场景下优势显著,能够有效缓解电商大促期间包装复核环节的“供货断流”问题,提升了仓储包装作业链的整体履约时效。
Abstract
The work aims to investigate the picking optimization methods of the same stock keep unit (SKU) under multiple storage locations to shorten picking paths and improve warehouse operational efficiency, so as to address the order picking problem under a scattered storage strategy in B2C e-commerce. The storage location selection and path planning problem under a scattered storage strategy were decomposed into a two-stage solution. A minimum increment-local greedy (MILG) algorithm was proposed for storage selection, combined with a discrete particle swarm optimization (PSO) algorithm for path planning. To address the dynamic demands of actual picking, a centroid method was introduced to optimize the storage selection mechanism, forming an improved two-stage picking algorithm (MILG*-PSO). Experimental results showed that the improved algorithm enhanced picking efficiency under various scattered storage strategies, with an average improvement rate in path length of up to 10.64% and a maximum improvement rate of 20.75%. This method demonstrates significant advantages in a "Person-to-Goods" operational scenario, effectively alleviating the "supply interruption" issue in the packaging and checking process during major e-commerce promotions, thereby improving the overall fulfillment timeliness of the warehouse packaging operation chain.
关键词
分散存储 /
储位选择 /
订单拣选 /
最小增量-局部贪婪算法 /
粒子群优化
Key words
scattered storage /
storage location selection /
order picking /
minimum increment-local greedy algorithm /
particle swarm optimization
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基金
国家自然科学基金(72101234); 浙江省自然科学基金(LY21G010005)