【正文】 019 MSA1 Effective Date: 2/2023 Copyright 20232023 Sigma Breakthrough Technologies, Inc. Used with permission. Copyright 2023 Cummins, Inc. All Rights Reserved. 計(jì)量性數(shù)據(jù) MSA 019 MSA2 Effective Date: 2/2023 Copyright 20232023 Sigma Breakthrough Technologies, Inc. Used with permission. Copyright 2023 Cummins, Inc. All Rights Reserved. 簡單測量分析－ 續(xù) Simple Measurement Study continued ? 使用 描述性統(tǒng)計(jì) ， 計(jì)算 Delta 的標(biāo)準(zhǔn)差 Using Descriptive Statistics, calculate the standard deviation of Delta ? 這個(gè)標(biāo)準(zhǔn)差被稱為 測量標(biāo)準(zhǔn)誤差 This standard deviation is called the Standard Error for Measurement ? 其主要代表了什么，重復(fù)性還是再現(xiàn)性？ Which does this primarily represent, Repeatability or Reproducibility? Variable N Mean Median StDev Delta 10 019 MSA3 Effective Date: 2/2023 Copyright 20232023 Sigma Breakthrough Technologies, Inc. Used with permission. Copyright 2023 Cummins, Inc. All Rights Reserved. 簡單測量分析－ 續(xù) Simple Measurement Study continued ? 使用上面的標(biāo)準(zhǔn)差，什么是測量分布的良好估計(jì)值 Using the standard deviation above, what would be a good estimate of measurement spread? Variable N Mean Median StDev Delta 10 =Precisi on 7*6=Precisi on *6=Precisi on ?? 假設(shè)公差是 5 （上限－下限） Suppose tolerance (upper spec lower spec) is 5. ? 精確度和公差的比率如何？ What would be the ratio between the precision and the tolerance? 019 MSA4 Effective Date: 2/2023 Copyright 20232023 Sigma Breakthrough Technologies, Inc. Used with permission. Copyright 2023 Cummins, Inc. All Rights Reserved. 簡單測量分析－ 續(xù) Simple Measurement Study continued 這個(gè)比率被稱為精確度和公差比率 (P/T). 這個(gè)例子中 P/T 比率是： This ratio is known as the Precision to Tolerance (P/T) Ratio. For this example the P/T Ratio is: 這個(gè)可以被解讀為：“ 46％的規(guī)格公差被測量系統(tǒng)誤差所占用了” This is interpreted as: “46% of the specification tolerance is taken up by measurement error” Variable N Mean Median StDev Delta 10 P T/ .? ?? Preci sionTo lera nce 46 %2 325019 MSA5 Effective Date: 2/2023 Copyright 20232023 Sigma Breakthrough Technologies, Inc. Used with permission. Copyright 2023 Cummins, Inc. All Rights Reserved. 測量能力指數(shù) P/T Measurement Capability Index P/T ? 精確性和公差比率 Precision to Tolerance Ratio ? 描述有 多少百分比的公差 是被測量系統(tǒng)誤差占用了 Addresses what percent of the tolerance is taken up by measurement error ? 同時(shí)包含了重復(fù)性和再現(xiàn)性 Includes both repeatability and reproducibility ? 操作者 x 單位 x 試驗(yàn)次數(shù) Operator x Unit x Trial experiment ? 最佳情況 Best case: 10% ； 可以接受 Acceptable: 30% 通常以百分比表示Usually expressed as percent 注意 ： % 的測量系統(tǒng)變差。記住在做測量系統(tǒng)和以前分析結(jié)果的計(jì)算時(shí)，要經(jīng)常檢查這個(gè)值。 這里用的 是 AIAG 的工業(yè)標(biāo)準(zhǔn)。 Note: standard deviations accounts for % of MS variation. Always check the value used when making parisons between measurement systems or previous analysis calculations. The use of is the AIAG industry standard. P T Tolerance MS / ? * ? 019 MSA6 Effective Date: 2/2023 Copyright 20232023 Sigma Breakthrough Technologies, Inc. Used with permission. Copyright 2023 Cummins, Inc. All Rights Reserved. 精確度和公差比率 Precision to Tolerance Ratio Product Tolerance LSL USL 測量系統(tǒng)變差measurement system variation P/T = 20% P/T = 100% P/T = 200% 019 MSA7 Effective Date: 2/2023 Copyright 20232023 Sigma Breakthrough Technologies, Inc. Used with permission. Copyright 2023 Cummins, Inc. All Rights Reserved. 測量能力指數(shù)－ % GRR Measurement Capability Index % GRR ? 描述有多少 總變差比率 是由測量系統(tǒng)誤差造成的 Addresses what percent of the total variation is taken up by measurement error ? 同時(shí)包含了重復(fù)性和再現(xiàn)性 Includes both repeatability and reproducibility ? 操作者 x 單位 x 試驗(yàn)次數(shù) Operator x Unit x Trial experiment ? 作為一個(gè)目標(biāo)，我們期望 %RR 30% As a target, look for %RR 30% 通常以百分比表示Usually expressed as percent % R R MSTotal? ???100019 MSA8 Effective Date: 2/2023 Copyright 20232023 Sigma Breakthrough Technologies, Inc. Used with permission. Copyright 2023 Cummins, Inc. All Rights Reserved. ％重復(fù)性和再現(xiàn)性 % Repeatability Reproducibility Observed Process Variation 測量系統(tǒng)變差measurement system variation %RR = 20% %RR = 75% %RR = 100% 019 MSA9 Effective Date: 2/2023 Copyright 20232023 Sigma Breakthrough Technologies, Inc. Used with permission. Copyright 2023 Cummins, Inc. All Rights Reserved. %RR = 20% %RR = 50% 觀察到的流程變差 Observed Process Variation %RR = 100% 產(chǎn)品公差 Product Tolerance LSL USL 測量系統(tǒng)變差 measurement system variation P/T = 20% P/T = 50% P/T = 100% 019 MSA10 Effective Date: 2/2023 Copyright 20232023 Sigma Breakthrough Technologies, Inc. Used with permission. Copyright 2023 Cummins, Inc. All Rights Reserved. %RR = 25% %RR = 50% 觀察到的流程變差 Observed Process Variation %RR = 100% 產(chǎn)品公差 Product Tolerance