一种新的多元联合质量控制技术

A New Multivariate Joint Quality Control Technique

本文提出一种新的多元联合质量控制技术，用一张控制图能同时对均值向量和协差阵进行控制，并以一例说明了它的有效性，最后，列表算出了该控制图的平均链长，并以图示表明了平均链长随非中心参数的变化情况。

In this article,a new technique of multivariate joint quality control is presented.It canmonitor the change of means vector and convariance simultaneously.The effectiveness ofthis technique is illustrated with an example. The average run lengths of this control tech-nique are also given,An illustration shows the average run length varies with the non-centre parameter.