基于约束规划的最优浇次计划模型研究

基于约束规划提出最优连铸浇次计划模型.模型在以往研究的基础上增加了板坯厚度约束和交货期约束;为不同钢级赋予不同的量化值,按照组浇工艺要求规定的钢级范围来确定能够组成同一浇次的钢级量化允许值范围,将组浇工艺要求直接量化;模型不仅确定浇次的组成,而且确定浇次的顺序和炉次在浇次内的顺序.根据生产实际随机生成数据所做的实验表明所提出的方法是有效的.

Research on optimal cast planning model based on constraint programming approach

Optimal cast planning model was proposed based on constraint programming approach. Constraints of slab thickness and delivery date were added to traditional model. To numeralize the technics requirement of cast composition, numerical values of different steel grades were defined, and fluctuation range for numerical values of steel grades which can be grouped into a cast was defined according to technics requirement. Both sequence of charges in casts and sequence of casts are determined optimally. Numerical experiments based on steelmaking process show that the proposed method is effective.