Performance Analysis and Design of Supply Chains: A Petri Net Approach
利用广义随机Petri网对供应链网络进行动态建模，比较了按库存生产和按订单装配两种策略的总成本，并求解了供应链中的解耦点定位问题。
In this paper, we investigated a dynamic modelling technique for analysing supply chain networks using generalised stochastic Petri nets (GSPNs).The customer order arrival process is assumed to be Poisson and the service processes at the various facilities of the supply chain are assumed to be exponential.Our model takes into account both the procurement process and delivery logistics that exist between any two members of the supply chain.We compare the performance of two production planning and control policies, the make-to-stock and the assemble-to-order systems in terms of total cost which is the sum of inventory carrying cost and cost incurred due to delayed deliveries.We formulate and solve the decoupling point location problem in supply chains as a total relevant cost (sum of inventory carrying cost and the delay costs) minimisation problem.We use the framework of integrated GSPN-queuing network modellingÐ with the GSPN at the higher level and a generalised queuing network at the lower levelÐto solve the decoupling point location problem.