关键词: 供应链, 解耦点（CODP）, 数字化, 预约需求系统

Abstract:

As one of the digital technologies that are gradually concerned by the industry， the digital platform Advance Demand Information system （DADI） has a positive impact on the operation optimization of the supply chain. The advance demand information collection function transforms the traditional inventory / order push-pull mode into the inventory /advance push-pull mode. By obtaining customer commitment lead time， it shortens the waiting time of customers， reduces the mismatch between supply and demand， and changes the position decision-making mode of traditional supply chain decoupling point. At the same time， the digital platform enterprises promote the rapid sharing of order demand information in the terminal market， and avoid the time lag and long tail effect of information feedback layer by layer to the upstream. Therefore， the mechanism of decision making of customer order decoupling point in supply chain optimization of DADI system is explored. Firstly， the mechanism is deduced that commitment lead time and inventory depend on each other and jointly affect the enterprise's profit. Secondly， the commitment lead time cost threshold is calculated. The threshold not only affects the supplier's choice of appointment driven or inventory driven strategy， but also affects the decoupling point position of the supply chain. Thirdly， the influence of unit inventory holding cost， delayed order cost， customer demand uncertainty and other factors on the decoupling point position is deduced. Fourth， the difference of the profit and CODP position of the supply chain is compared under the DADI system， ADI system and traditional model. Finally， sensitivity analysis of the relatively important factors is also conducted， and numerical example is carried out to demonstrate the correctness of the conclusion.

Key words: supply chain, customer order decoupling point （CODP）, digitalization, advance demand information