基于特定单元事件点的改进间歇生产调度模型

摘要

建立有效的间歇调度模型一直是生产调度问题调度研究的热点，而连续时间模型是优化短期间歇生产调度问题的有效工具。基于特定单元事件点的概念，建立一种改进的间歇调度连续时间混合整数线性规划（MILP）模型。该调度模型引入了新变量，使模型处理物料在不同设备间的传输过程更加灵活。结果表明，提出的改进模型只需要较少的事件点，就可以快速有效处理无限中间存储（UIS）间歇调度问题。%Establishing effective model of scheduling for batch processes is the hot spot of the batch processes scheduling research. Continuous-time models are evolved as a promising tool for optimizing problems related to short-term scheduling of batch plants. Short-term scheduling of batch operations is an important part of scheduling problems. Based on the concept of unit-specific event, an improved mixed integer linear programming model for scheduling of batch plants is proposed. Several new variables and constraints are introduced to make stock transfer between units more flexible. The result shows that the new model can deal with scheduling problems of unlimited intermediate storage effectively and faster with less number of events.