【作者】 佘光； 王海燕；

【Author】 SHE Guang,WANG Hai-yan (Southeast University,Nanjing 210096,China)

【机构】 东南大学系统工程研究所；

【摘要】 供应链系统订单、库存等状态变量的稳定性和订单的牛鞭效应是供应链系统的动力学行为的不同表现,研究供应链系统的动力学行为对供应链管理具有重要的意义。本文以具有不同提前期的多供应商和单零售商组成的供应链系统为研究对象,以顾客需求、期望净库存量和期望在途库存量为供应链系统输入变量,以订单量、净库存量、在途库存量和预测需求为输出变量,建立了供应链系统的多输入多输出状态空间模型。利用传递函数矩阵研究了供应链系统的状态稳定性和订单的牛鞭效应,结论表明:若零售商采用改进的OUT订货策略,那么即使对于不同提前期多供应商情况,零售商发出的订单也是稳定的。当零售商的期望净库存量和期望在途库存量取值为常数时,供应链的牛鞭效应和一个供应商的情况相等,且与两个供应商对应的具体提前期大小无关。若期望净库存量和期望在途库存量取为预测需求倍数,则向提前期大的供应商订的货越多,则供应链的牛鞭效应越大。更多还原

【Abstract】 stabilities of variables such as order,inventory and the bullwhip effect are two different dynamics behavior of supply chain.The research on the dynamics behavior of supply chain have vital significance for supply chain management.This article take supply chain containing Multi-supplier with different lead-time as the object of study.It take the customer demand,the desired net stock and the desired work-in-process level as inputs,and take order quantity,net stock and work-in-process level as ouputs, establishing a state space model of supply chain system containing multi-input and multi-output.The supply chain system’s condition stability and bullwhip of order are studied and draw some conclusions.If the retail uses the improvement OUT replenishment strategy,order of the retail is stable no matter lead-times of different suppliers are the same or not.If the desired net stock and the desired work-in-process level equal constants,the bullwhip effect of the supply chain equals the case of one supplier,and being independent with lead-times of multi-suppliers.If the desired net stock and the desired work-in-process level equal multiple of the forecast of demand,the more ordered from the supplier with long lead-time,the more is the bullwhip effect.更多还原