AT&S www.ats.net Qualit V Satisfv Measurement System Analysis (MSA) TD.S.QM-24E.01 Shanghai July 2005 AT&S www.ats.net Topic Basic concept of measurement System Analysis Measurement System Analysis Application & Determination Attribute measurement system analysis Q & A TD.S.QM-24E.01 July 2005 Shanghai MSA 2 AT&S www.ats.net Some basically concept for MSA TD.S.QM-24E.01 Shanghai July 2005 3 AT&S www.ats.net Measurement Measurement Tools Measurement System TD.S.QM-24E.01 July 2005 Shanghai MSA 4 AT&S www.ats.net Bias: Difference between mean of all measurements and the reference value. Reference value can be set up by the mean of measurements with a higher quality measurement system. Reference value Mean of measurements TD.S.QM-24E.01 July 2005 Shanghai MSA 5 AT&S www.ats.net Different mean values shows different results Analysis for systematic failure: Bias due to OPERATER: Different person get different results. Bias due to EQUIPMENT: Different equipments shows different results. ..Reference.walue Measure equipment1 IMeasure equipment 2 or/and Operator 1 orand Operator 2 TD.S.QM-24E.01 July 2005 Shanghai MSA 6 AT&S www.ats.net Stability: Variation of a measuring system by measuring the same feature over a period of time. Referencevalue irne1 Time Tirie (temporal) Stability TD.S.QM-24E.01 July 2005 Shanghai MSA 7