Doubling Sampling T2 Control Charts with Estimated Parameters
Quality and Reliability Engineering International
Two double sampling T2 charts are discussed. They only differ in how the second sample is used to suggest to the practitioner the state of the process. An optimal method using a genetic algorithm is given for designing these charts based on the average run length (ARL). An analytical method is used to determine run length performance of the chart. Comparisons are made with various other control charting procedures. Some recommendations are given.
Champ, Charles W., Francisco Aparisi.
"Doubling Sampling T2 Control Charts with Estimated Parameters."
Quality and Reliability Engineering International, 24 (2): 153-166.