Scheduling Semiconductor Manufacturing Lines

这个项目的目标是研究排序决策 最先进的半导体生产线。 的 正在解决的具体问题是“下一步是什么”调度 决定，决定当一个人被杀时下一步应该做什么。 操作员在机床上完成了一项任务， 和操作员准备执行另一任务。 项目 涉及广泛的产业互动，并侧重于 生产逻辑和存储芯片的生产线。 研究方法包括定期比较 生产线的当前状态， 对不同零件号的芯片的需求。 该组 生产线运行的约束条件也 考虑了 将用公式表示约束优化问题 并进行求解以确定在 为了把线放在一个更好的位置， 满足需求。 待执行操作的优先级 在下一个周期中，也使用对偶和原始计算 优化的信息。

The objective of this project is to study sequencing decisions in state-of-the-art semiconductor manufacturing lines. The specific problem being addressed is the "what next" scheduling decision, the decision as to what should be done next when an operator has completed a task on a machine tool, and both the tool and operator are ready to perform another task. The project involves extensive industrial interaction and focuses on a production line that manufactures logic and memory chips. The research approach consists of periodically comparing the current status of the manufacturing line with current and projected demands for chips of different part numbers. The set of constraints under which the manufacturing line is operating is also considered. A constrained optimization problem will be formulated and solved to determine which operations should be performed during the period in order to place the line in a better position of meeting the demand. Priorities for the operations to be performed during the next period are also computed using both dual and primal information from the optimization.