雙邊規格下不同附加條件之製程能力量測

Abstract

製程能力指標經常被用來衡量製程重複製造產品符合規格的能力，不僅是提供品質保證的工具，也是提供品質改善方面的一個方針。提供可信賴的製程量測給產業界應用非常重要;但是實務上製程經常伴隨附加條件，本篇著重在應用與解決有附加條件下製程量測的問題。因此，本篇使用電腦軟體Matlab並做出在雙邊規格下不同附加條件的信賴下界表格及臨界值表格，還有提供個別的程式可以計算特定的信賴下界值以及臨界值。貢獻是操作者不須具備熟練統計技巧就可輕易地對照文中提供的表格與程式並做出可信賴的決策。本文的附加條件包含：多品質特性，多條生產線，製程平均數偏移，製程變異數改變，量測誤差，工具磨損，允收抽樣。

Process capability indices (PCIs) have been proposed in the manufacturing industry to provide yield, measures on process capability, which are effective tools for quality assurance and guidance for process improvement. It is important to provide reliable capability assessment for in-plant applications. However, in practice, processes usually with side conditions, the objective of this thesis is to implement and solve the capability testing with side conditions problems. Thus, in this thesis, we provide various lower confidence bounds tables, critical values tables, and programs to calculate a specific lower confidence bound or critical value by Matlab computer program for two-sided processes with side conditions. That is, users could apply these tables and programs then make reliable decisions without practiced skills of the statistical technique. The side conditions include process with multiple characteristics, process with multiple manufacturing lines, process with mean shift, process with variance change, process with measurement error, process with tool replacement, and determination values for product acceptance.