| Summary: | 碩士 === 國立雲林科技大學 === 工業工程與管理研究所碩士班 === 91 === Control charting is a graphical expression and operation of statistical hypothesis testing. In this paper, we develop the economic design of the variable sampling intervals (VSI) T2 control chart to determine the values of five test parameters of the chart (i.e., the sampling size, the long sampling interval, the short sampling interval, the warming limit, and the control limit) such that the expected total cost, associated with the test procedure, is minimized. The genetic algorithm (GA) is employed to search for the optimal values of the five test parameters of VSI T2 chart, and an example is provided to illustrate the solution procedure. Sensitivity analysis is then carried out to investigate the effects of model parameters on the solution of the economic design.
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