2016
DOI: 10.1590/0103-6513.209916
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Economic design of a nonparametric EWMA control chart for location

Abstract: In this article, we have proposed an economic design of Exponentially Weighted Moving Average control chart based on sign statistic to control location parameter of the process. The economic performance of the chart is evaluated for different shifts in the location. It is observed that, as shift in the process location increases, sample size to detect the shift and the loss cost from the process decrease. The power of the chart increases with increasing shift. The design gives better economic/statistical perfo… Show more

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Cited by 7 publications
(8 citation statements)
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“…If the PM for a system is designed using incomplete maintenance, the component failure behavior is supposed to be changed after each PM action and affects the quality control chart policies. Thus, an EWMA chart is used for quality control [22].…”
Section: Arlmentioning
confidence: 99%
See 1 more Smart Citation
“…If the PM for a system is designed using incomplete maintenance, the component failure behavior is supposed to be changed after each PM action and affects the quality control chart policies. Thus, an EWMA chart is used for quality control [22].…”
Section: Arlmentioning
confidence: 99%
“…In 3, FN(•) is the cumulative distribution function of the standard normal distribution, and K = 3/ √ n, which corresponds to the false alarm rate α = 0.0027 or an in-control ARL 1 = 370. Several studies have computed ARL 2 depending on the pre-specified optimum value of ARL 1 of 370 [22]. Srivastava and Wu [35] proposed an optimum value of λ, which minimizes ARL 2 for given ARL 1 .…”
Section: Exponentially Weighted Moving Average Control Chartmentioning
confidence: 99%
“…Therefore, this will affect the control strategy. In addition to incomplete maintenance, exponentially weighted moving average (EWMA) chart has been recently used [2].…”
Section: Introductionmentioning
confidence: 99%
“…Aslam et al [7] used an EWMA statistic for exponential distribution after normal approximation, and improved the result in terms of smaller ARLs. Hariba and Tukaram [8] developed an economic design of an EWMA control chart and showed that as the shift in process mean increases, the sample size required to detect the shift decreases. Still, there is opportunity to introduce a statistic which can capitalize on the given information and is helpful in early detection of the shift.…”
Section: Introductionmentioning
confidence: 99%