統(tǒng)計過程控制之先進(jìn)控制圖培訓(xùn)(英文版)-資料下載頁
2025-02-06 06:31本頁面
【正文】 eControl is based on the capability of the process to meet specification limits. 26 Belton Confidential: For training only PreControl Chart The PreControl Chart prises five zones. Target Value Upper Specification Limit Lower Specification Limit Upper PreControl Limit Lower PreControl Limit Green Zone Yellow Zone Yellow Zone Red Zone Red Zone Half Tolerance Full Tolerance 27 Belton Confidential: For training only PreControl Chart While the PreControl Chart lends itself to simplicity, it is remended that it be used only in cases where the process capability is good (Cpk ? ). Variants of the PreControl Chart include replacing the ? Specification Limits with 3? Process Limits ? PreControl Limits with ? Process Limits Like the XMR Chart, the PreControl Chart is suitable for situations where sample size is 1 per observation. However, it is also highly dependent on the assumption of normality. 28 Belton Confidential: For training only Control Chart Roadmap Q u a li t yC h a r a c t e r is t i cD e f e c t s o rD e f e c t iv e sH ig h Y ie ldC o n s t a n tS / S iz eC p k 1 . 5A t t r ib u t e sD r i f tD e t e c t io nS / S iz e = 1V a r ia b le sD e f e c t iv e s D e f e c t s p C h a rt n p C h a rtC um u l a t i v eC ou n t C h a r tC o n s t a n tS / S iz eNop C h a rtNoY e sY e s c C h a r t u C h a r t u C h a r tY e sNoN o r m a lD is t r ib u t io nC U S U M C h a rt E W M A C h a rtX a n d MRC ha rt sNoP re C on t ro lC ha rt sY e sY e sY e sNoG r a d u a lNoC o n s t a n tS / S iz eS u d d e nX ba r a n d SC ha rt sNoX ba r a n d RX ba r a n d S C ha rt sY e s29 End of Presentation Rev 1 15 Mar 03 謝謝觀看 /歡迎下載 BY FAITH I MEAN A VISION OF GOOD ONE CHERISHES AND THE ENTHUSIASM THAT PUSHES ONE TO SEEK ITS FULFILLMENT REGARDLESS OF OBSTACLES. BY FAITH I BY FAITH
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