測量階段相關(guān)知識簡介(編輯修改稿)
2025-02-26 19:04 本頁面
【文章內(nèi)容簡介】 gma, LLC 2023 14 Collect Data for Characterizing the Project Y ? To fully understand the process, we need to collect data in such a way as to understand the contribution of short term variation as well as variation that occurs over time. ? Collecting data over time places demands on the measurement system. ? Measuring Discrete Data outputs will require larger sample sizes. ? A Rational subgroup is a collection of samples taken over a short period of time, or under similar conditions, which we believe is as free as possible of assignable causes. Copyright Route Six Sigma, LLC 2023 15 采集數(shù)據(jù) 顯 示項目 Y的特性 ? 為了全面了解流程 , 我們采集的數(shù)據(jù)必須同時了解到短 期和長期 差異 。 ? 收集全部數(shù)據(jù)需要測量系統(tǒng)的配合 ； ? 測量離散 的 數(shù)據(jù)必須采用更大的樣本 數(shù)量 。 ? 合理的子群是一個 短時間 樣本 的 集合， 或者取于相似的環(huán)境。 Copyright Route Six Sigma, LLC 2023 16 Calculate Process Capability for the Project Y ? The Baseline Process Capability provides important information for the project. ? Shows the ability of the process to produce output that meets the performance standards. ? Aids in determining the contribution of technology and process control to process variation. ? Enables objective parison of this process with others, both internally and externally, to judge relative performance. ? D e fin e th e p r o b le m in m a th e m a tic a l te r m s? P r e d ic t p r o b a b ility o f p r o d u c in g d e fe c tsCopyright Route Six Sigma, LLC 2023 17 計算 項目 Y的流程能力 ? 基本流程能力提供了項目重要信息 . ? 表明流程能出產(chǎn)合 乎 標(biāo)準(zhǔn)的能力 ； ? 幫助確定流程 控制 和技術(shù)控制 對流程 差異 的貢獻(xiàn) ； ? 能夠同時從內(nèi)部因素和外部因素客觀比較該流程與其它流程，從而判段其相對性能 ? D e f in e t h e p r o b le m in m a t h e m a t ic a l t e r m s? P r e d ic t p r o b a b ilit y o f p r o d u c in g d e f e c t s偏離均值 預(yù)測產(chǎn)品缺陷概率 確定問題的數(shù)學(xué)條件 技術(shù)問題 控制問題 Copyright Route Six Sigma, LLC 2023 18 Determine the Improvement Goal ? Now that a mathematical description of the process output is available, and can be p
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