论文部分内容阅读
本文主要讨论非正态总体下，可变抽样区间的EWMA图的经济设计问题。首先利用Burr分布近似各种非正态分布，建立可变抽样区间的非正态EWMA图的经济模型，使总期望费用最小来确定参数的最优值；其次用遗传算法来寻找该经济模型的最优解，并给出工业中的一个例子,最后对可变抽样区间的非正态EWMA图的经济模型进行灵敏度分析。“,”The economic design of EWMA control chart with variable sampling intervals （VSI） for non-normal data is discussed in this paper. First, the economic modal of the VSI EWMA chart for nonnormal data is developed using the Burr distribution to approximate various non-normal distribution, the optimal values of the test parameters for the VSI EWMA charts will be determined through the expected total cost is minimized. Further, the genetic algorithms （CA） will be used to search for the optimal values of parameters of the VSI EWMA chart for non-normal data, and an example is provided to illustrate the solution procedure. Finally, the sensitivity analysis of this modal is done.