基于主成分分析的制造单元形成方法

摘要

提出一种用于制造单元布局的两阶段制造单元形成方法。在第一阶段,计算每对工序之间的相似/相异度。在第二阶段,使用主成分分析将零件分组,形成制造单元。在此特采用一实例详细讨论了如何使用这种方法并且比较了三种相似/相异度(Jaccard相似度,Levenshtein距离和合并系数)的效果。结果表明在这三种相似/相异度中,合并系数法效果最好。%　　A computerized two-stage cell formation method for cellular layout design is proposed. In the first stage, a similarity/dissimilarity measure based on sequence comparison is calculated for each pair of part routings. In the second stage, Principal Component Analysis is applied to a dataset to identify part families and form cells. Finally a case study illustrates the approach in details and compares three similarity/dissimilarity measures:Jaccard similarity coefficient, Levenshtein Distance and Merger coefficient. The results show that out of three similarity/dissimilarity coefficient, Merger coefficient outperforms the others.