A comparison of formulas for the design of cumulative sum control charts | Zendy

Cox M. A. A. | Zendy

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A comparison of formulas for the design of cumulative sum control charts

Author(s) -

Cox M. A. A.

Publication year - 2009

Publication title -

quality and reliability engineering international

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.913

H-Index - 62

eISSN - 1099-1638

pISSN - 0748-8017

DOI - 10.1002/qre.1002

Subject(s) - control chart , statistics , mathematics , chart , scaling , control (management) , computer science , geometry , process (computing) , artificial intelligence , operating system

A conventional cumulative sum control chart has a V‐mask where each arm makes an angle θ with the horizontal and has a lead distance d. These parameters are usually related to h (=dA tan(ϑ), A is a scaling factor) and k(=A tan(ϑ)). Two systems of formulas are examined for deriving h and k for selected values of the in control and out of control average run lengths. This is the first time an exhaustive comparison has been made. Copyright © 2009 John Wiley & Sons, Ltd.

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