Using Confidence Intervals to Compare Process Capability Indices
Using Confidence Intervals to Compare Process Capability Indices
复制标题
使用置信区间比较过程能力指数
DOI：
10.1081/qen-200028666
复制
发表时间：
2004
影响因子：
2
通讯作者：
N. Hubele
中科院分区：
文献类型：
--
作者：
Lorraine Daniels;Byron Edgar;R. Burdick;N. Hubele
过程能力指标被广泛用于过程性能的度量。在选择供应商和评估过程改进等情况下，比较两个不同过程或同一过程在调整前后的能力指数是很有意义的。在本文中，我们考虑了几种对指数Cpk和Cpm进行这种比较的方法。通过计算机仿真对两种方法进行了比较。提供了基于功率和测试尺寸计算选择适当方法的建议。
Process capability indices are widely used to measure process performance. In situations such as selecting a supplier and assessing process improvement, it is of interest to compare capability indices for two different processes or the same process before and after an adjustment. In this paper, we consider several methods for performing this comparison on the indices Cpk and Cpm . The methods are compared using a computer simulation. Recommendations are provided for selecting an appropriate method based on power and test size computations.