可变参数的联合中位值和极差控制图  

Combine Median and Range Charts with Variable Parameters

作　　者：张维铭[1] 宗云南[1] 刘建斌[1] 

机构地区：[1]浙江理工大学,杭州310018

出　　处：《应用概率统计》2007年第2期149-156,共8页Chinese Journal of Applied Probability and Statistics

摘　　要：最近设计了可变样本容量和抽样区间的联合中位值(x^(^))和极差(R)控制图,本文利用Costa的可变参数控制图的方法,设计包括可变控制限的可变参数的联合■和R图(CVP ■-R图)．计算了在可变参数下发信号前的平均时间,并同联合常规■-R图(CFSSI图)和可变样本容置和抽样区间的联合■-R图(CVSSI图)作比较,所设计的控制图能较快地发现过程平均值和方差的小变化,提高CVSSI图的效率．This paper extends previous studies for processes that are monitored by the combination of x and R charts with variable parameters to include variable control limits based on the Costa method of joint x and R charts with variable parameters. Calculating the average time to signal for the combination of x and R charts under variable parameters. The proposed charts are compared with the conventional charts, the variable sample size and sampling interval charts.

关 键 词：中位值 极差 控制图 可变参数 发信号的平均时间. 

分 类 号：O213.1[理学—概率论与数理统计]