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Multivariate process capability using principal component analysis in the presence of measurement errors

机译:在存在测量误差的情况下使用主成分分析进行多变量处理的能力

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摘要

Various different definitions of multivariate process capability indices have been proposed in the literature. Most of the research works related to multivariate process capability indices assume no gauge measurement errors. However, in industrial applications, despite the use of highly advanced measuring instruments, account needs to be taken of gauge imprecision. In this paper we are going to examine the effects of measurement errors on multivariate process capability indices computed using the principal components analysis. We show that measurement errors alter the results of a multivariate process capability analysis, resulting in either a decrease or an increase in the capability of the process. In order to achieve accurate process capability assessments, we propose a method useful for overcoming the effects of gauge measurement errors.
机译:文献中已经提出了多元过程能力指数的各种不同定义。与多元过程能力指数有关的大多数研究工作都假设没有量规测量误差。然而,在工业应用中,尽管使用了高度先进的测量仪器,但仍需要考虑量规的不准确性。在本文中,我们将研究测量误差对使用主成分分析计算的多元过程能力指数的影响。我们表明,测量误差会改变多元过程能力分析的结果,从而导致过程能力的下降或增加。为了实现准确的过程能力评估,我们提出了一种可用于克服仪表测量误差影响的方法。

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