공급 사슬 관리를 위한 비 정수 타임 랙을 갖는 ATP(Available-to-Promise) 시스템

The accurate modeling of Available-To-Promise(ATP) plays a very important role in enhancing customer satisfaction and fill rate maximization. The complexity for manufacturing system in real SCM environment, which includes all the linkages among procurement, production and distribution, makes the accurate modeling of ATP quite difficult. In addition to, many researchers assumed ATP model with integer times. However, in industry practices, SCM environment with integer times is very rare and the model developed using integer times is therefore just approximating the real system. In this paper, we consider an optimized ATP system with non-integer time lag in Supply Chain Management(SCM). We focus on a real SCM system of a worldwide headquarter, distribution centers, and manufacturing facilities which are globally networked. We develop a linear programming(LP) model for ATP process, which has the definition of required non integer data flow. The illustrative ATP system has impact on less inventory cost with less out of stock, which shows the proposed model with non-integer time lag quite fit to real SCM environment.