【摘要】 传统的-R(均值-极差)控制图虽然能反映整个过程的变化趋势,但只对较大的偏差反应灵敏,对持续的、较小的偏差反应迟钝.一种基于预测模型的改进算法能较好地反映较小偏差的变化,并以实例加以比较.更多还原

【Abstract】 The big warp was sensitively reflected by the traditional -R(mean-range)control chart,but the small warp didn’t work.A kind of improved algorithm based on predictive model was proposed which could incarnate the variety of the small warp better.An example was given to compare the control charts.更多还原