IMPROVEMENT ON TAAM ALGORITHM OF MULTIVARIATE PROCESS CAPABILITY INDEX BASED ON THE RATIO OF VOLUME

摘要

At present, the wide application of multivariate statistical process control technology has led to considerable studies on calculation methods of multivariate process capability indices. This paper conducted a deep study on the widely used Taam algorithm. It firstly analyses recent literatures on multivariate process capability indices. Secondly, it profoundly discusses the main disadvantages of Taam algorithm of multivariate process capability index based on the ratio of volume and puts forward an improved algorithm. Finally, it comparatively analyzes the improvement effect of the new algorithm of process capability index by making use of the classic case from Jackson's bivariate process.