The Taguchi Capability Index
作者:
BoylesRussell A.,
期刊:
Journal of Quality Technology
(Taylor Available online 1991)
卷期:
Volume 23,
issue 1
页码: 17-26
ISSN:0022-4065
年代: 1991
DOI:10.1080/00224065.1991.11979279
出版商: Taylor&Francis
关键词: Loss Function;Process Capability;Process Centering;Process Potential;Scaled Chi-Square Approximation;Target Value;Variation from Target
数据来源: Taylor
摘要:
The process capability indicesCpandCpkare widely used to provide unitless measures of process potential and performance. These indices do not adequately address the issue of process centering. An alternative definition ofCpadvocated by Taguchi addresses this issue directly. Later authors introduced the nameCpmfor the Taguchi index and examined statistical properties of an inefficient estimator under the assumption that the process mean coincides with the target value. The present paper presents statistical procedures based on the original Taguchi estimator which require no assumptions on the process mean.CpmandCpkare compared and contrasted to dispel the notion thatCpkmeasures process centering.
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