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belstaff uomo 单侧限&#2104

 
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Cholerny Spammer



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PostPosted: Fri 17:06, 01 Apr 2011    Post subject: belstaff uomo 单侧限&#2104

单侧限制管理图控制界限的探讨
3363407由式(6)和(7)可知:伍两一,[link widoczny dla zalogowanych]!~/将式(1o)代入式(5),可以得到UCL(LCL)一士2.78—_42令G一则控制中心线和控制上限(或下限)分别为CL—X和UCL(LCL)一X士G灭经整理,可以得出以下两组结果:a.有单侧下限的控制界限为CL一(10)102河海大学学报1996年1月3.2矗图由于反映了质量数据的离散程度,故仍属双侧问题,[link widoczny dla zalogowanych],控制界限与双侧问题相同,即CL—R(16)UCL—D.天(】7)工CL—DaR(1Cool式中D:,D。为两个系数,此处不再赘述.最后,利用单侧限制公式来分析前述实例的质量状态是否正常.由公式(12)及(13)可知:图:CL==28.42(MPa)LCL=寅一G一28.42—0.54×1.23—27.76(MPa)R图:CL—R一1.23(MPa)UCL一2.60(MPa)~图见图所6示.、囤\人产、,\/yV、、/\、/V-42(M—LCL~27·76(f2|6B101214161820弓R圉\八卜’—一\、/VV图6单侧X~管理匮(实例)第24卷第1期丰爨春等单倒限制管理图控制界限的探讨103根据管理图判断原则及图6实际分布情况,所有2O点均在控制界限内,且排列无异常因此可以判定工序质量处于正常状态,这与实际情况相吻合.4结语综上所述,[link widoczny dla zalogowanych],本文得出如下结论:双侧管理图仅适用于双侧质量标准限制的工序管理,它不能适用具有单侧质量公差限制的工序管理.要解决单侧限制质量控制同题,则应用本文介绍的单侧限制管理图控制界限计算公式和方法能较好地予以解决.ControlLimitofSingle—Side—RestrictedManagementChartFengJingchun(Dept.ManagementEngineering,HohaiUniv.Nanjing210098)YangKan(Dept.ofHydrologyandWaterResources,HohaiUniv.Nanjing210098)AbstractThispaperanalysesexistingproblemsofthedoublesiderestrictedmanagementchartusedwidelyinqualitycontrolatpresent,[link widoczny dla zalogowanych],andputsforwarditsapplicability.Theprincipleofthesinglesiderestrictedmanagementchartisalsoexpounded,andthecalculatingformulaeofcontrollimitforthesinglesiderestrictedmanagementchartareinferred.Atthesametime,[link widoczny dla zalogowanych],theviewpointmentionedinthepesperisdemonstratedbymeansofanengineeringexample.Thecalculatingformulaeandmethodsareonthebasisofthetwosiderestrctedmanagementchart.Thepresenttheoryandmethodareveryusefultoenrichingdynamicqualitycontro1.Keywordssmallprobabilityincident;singlesiderestrictedmanagementchart;uppercontrollimit;lowercontrollimit
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