将碳纤维的数字化加工优化问题按阶段划分为若干多目标决策子问题。以其中的拉伸过程为例,按拉伸的时间顺序将其划分为6个阶段,以原丝线密度、强度和断裂伸长率为优化目标,提出了一种碳纤维拉伸工艺优化的多目标动态规划方法。以实验数据为基础,拟合出产品性能与生产工艺的关系。采用专家打分,确定各拉伸阶段的权重,合理分配拉伸比。
The digital processing optimization problem of carbon fiber was solved by dividing it into several multi-objective decision-making sub-problems. Taking the drawing process as an example, it was divided into six stages by the time sequence, and design a multi-objective dynamic programming method to obtain the optimal linear density, strength and elongation ratio. The product performance-production process relation fitting curves are obtained based on the experimental data; and the weight of each stage is determined to give a reasonable distribution of drawing ratio with experts scoring.