Economic Design of the Special VSSI T~2 Chart with Genetic Algorithms Based on Markov Chain

摘要

T~2 control chart is widely used to monitor the multivariate process for quality improvement. In this paper, economic performance analysis on the SVSSI T~2 control chart is studied. Two statuses whether the process is in control or out of control are considered to define the states of Markov Chain. And a numerical example is provided to compare the performances of three control charts in terms of AATS and EL. The results show that the performance of SVSSI control chart is better than other charts. Further, the genetic algorithm is used to search the optimal solution of the SVSSI T~2 control chart.