改进模糊综合评判法在复合材料构件成型工艺决策中的应用

Application of the improved fuzzy comprehensive evaluation method in forming processing decision-making for the composite component

通过对原始模糊综合评判法的改进,使其能转化为计算机可操作的决策算法以解决飞机复合材料构件的成型工艺决策的问题,并且评判结果更加符合生产实际.将隶属度计算法引入评价矩阵确定环节,实现了计算机代替人力完成评价矩阵的确定,采用为评价范围增加安全裕度的方法规避了原始模糊综合评判法的评价范围划分界限太绝对的问题,利用动态权重分配法和比率标度法相结合的方法实现了计算机自主进行权重分配,并且保证了分配结果切实符合用户实际偏好;以改进模糊综合评判法作为核心算法开发了复合材料构件计算机辅助成型工艺设计系统,并利用该系统进行了实际成型工艺决策,系统决策结果符合实际生产情况,表明了该方法在计算机辅助成型工艺决策应用方面的可行性和准确性.

The original fuzzy comprehensive evaluation method can be improved and converted to the computer-operable decision-making algorithm which can solve the problem of making the forming processing decision for the aircraft composite component,and the evaluation result is more consistent with actual production. The membership degree calculation method was introduced to determine the evaluation matrix and it achieved the computer instead of manpower to complete determining the evaluation matrix. The increasing safety margin method for the scope of the evaluation was adopted to avoid the problem that dividing the evaluation scope boundaries is too absolute by the original fuzzy comprehensive evaluation method. The dynamic weight distribution method was combined with the ratio method to achieve the computer automatic weight distribution,and it ensured the effective allocation results to meet the user's actual preferences. By using the improved fuzzy comprehensive evaluation method as the core algorithm,the computer aided forming processing design system for the composite component was developed. The developed system was applied in the actual forming processing decision-making,and the decision result was conformed to the actual production. It indicates the feasibility and accuracy of the method in the application of the computer-aided forming processing decision-making.