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Process capability control chart for non-normal data – evidence of on-going capability assessment

机译:非正常数据的过程能力控制图–正在进行的能力评估的证据

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Processcapabilityindicesarewidelyusedforvariousqualityassuranceactivitiesinmanyhigh-techindustries.Byasuitableanalysisofanindex,aproductiondepartmentcantraceandimproveapoorprocesstoenhancethequalitylevelandsatisfycustomerrequirements.Recently,somepracticalprocesscapabilitycontrolchartsweredevelopedforillustratingthecontinuousassessmentsofnormalprocesscapability.Thesechartscontaininformationregardingtheabilityoftheprocesstomeetorexceedcustomerrequirementoverthelifeofaprocess.Monitoringthebehaviouroftheprocess’sabilitytomeetcustomerrequirementcanprovidemanagerswithfeedbackandevidenceoftheprocess’sabilityintermstheyunderstand.However,processdistributionisoftenabnormal.Therefore,thisstudyincorporatesbootstrapproceduretoconstructcapabilitycontrolchartfornon-normalprocesses.Thesimulationsshowthattheempiricalcoverageprobabilityofthischartisclosetothedesiredcoverageprobabilityasthenumberofsubgroupislargeenough.
机译:Processcapabilityindicesarewidelyusedforvariousqualityassuranceactivitiesinmanyhigh-techindustries.Byasuitableanalysisofanindex,aproductiondepartmentcantraceandimproveapoorprocesstoenhancethequalitylevelandsatisfycustomerrequirements.Recently,somepracticalprocesscapabilitycontrolchartsweredevelopedforillustratingthecontinuousassessmentsofnormalprocesscapability.Thesechartscontaininformationregardingtheabilityoftheprocesstomeetorexceedcustomerrequirementoverthelifeofaprocess.Monitoringthebehaviouroftheprocess'sabilitytomeetcustomerrequirementcanprovidemanagerswithfeedbackandevidenceoftheprocess'sabilityintermstheyunderstand.However,processdistributionisoftenabnormal.Therefore,thisstudyincorporatesbootstrapproceduretoconstructcapabilitycontrolchartfornon-normalprocesses.Thesimulationsshowthattheempiricalcoverageprobabilityofthischartisclosetothedesiredcoverageprobabilityasthenumberofsubgroupislargeenough。

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