Push-pull model for production planning and scheduling
一种推拉结合的生产计划与调度模型*

Apart from decreasing inventory, the production plan should also satisfy the multiple customer demands and enhance the overall production equilibrium in Hybrid Manufacturing Enterprises(HME), which adopts mainly continuous process and meanwhile discrete process. The process flow network and a push-pull model for production planning and scheduling are proposed, featuring the practical requirements in HME. The model produces master plans with constrains of limited capacities, pulled by integrative demands of orders, quasi orders and inventory control, and further provides feasible plans for both continue and discrete processes, as well as material required plans for workshops according to the process flow network. To advance continuity and equilibrium, the production processes were designed to be pushed by such approaches as process circulation card, etc. The model was applied in a production management system which has been implemented in actual businesses.