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Journal of the Korean Society for Quality Management > Volume 32(1); 2004 > Article
Journal of the Korean Society for Quality Management 2004;32(1): 92-.
VSI EWMA 관리도의 경제적 통계적 설계
송서일1, 박현규2, 정혜진1
1동아대학교 산업시스템공학과
2동아대학교 산업시스템공학
An Economic Statistical Design of the EWMA Control Charts with Variable Sampling Interval
Tris paper present an economic statistical design which have statistically constraints for the optimal design of an EWMA control charts with variable sampling interval. Cost function use that proposed by Lorenzen and Vance, and the optimal design parameters include the sample size, control limit width, sampling interval, EWMA weight value. Comparisons between VSI EWMA control charts optimal economic design and optimal economic statistical designs show the following fact. Although have demerits which are more costly than economic design, have merits which to detect shifts more efficiently and to improve statistical performance.
Key Words: variable sampling interval control charts;ATS;ED(economic design);ESD(economic statistical design);
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