摘要: This report presents the design procedures and average run lengths of two multivariate cumulative sum (CUSUM) quality control procedures. The first CUSUM procedure reduces each multivariate observation to a scaler and then forms a... 展开 This report presents the design procedures and average run lengths of two multivariate cumulative sum (CUSUM) quality control procedures. The first CUSUM procedure reduces each multivariate observation to a scaler and then forms a CUSUM of the scalers. The second CUSUM procedure forms a CUSUM vector directly from the observations. These two procedures are compared to each other and to the multivariate Shewhart chart. Other multivariate quality control procedures are mentioned. Robustness, the Fast Initial Response feature for CUSUM schemes, and combined Shewhart-CUSUM schemes are discussed. Keywords: Shewhart chart, Average run length, Cumulative sum scheme. (MJM) 收起