Adaptive Control Charts
Mostrando 1-3 de 3 artigos, teses e dissertações.
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1. EWMA CHART WITH ADAPTIVE SMOOTHING CONSTANT FOR STATISTICAL PROCESS CONTROL / GRÁFICO EWMA COM CONSTANTE DE AMORTECIMENTO ADAPTATIVA PARA CONTROLE ESTATÍSTICO DE PROCESSOS
This work proposes an EWMA process control chart for individual observations or subgroup averages, in which the smoothing constant varies between two values according to the most recent value of the EWMA statistic, in order to achieve faster detection of small to moderate shifts in the process mean, and without the operational complexities presented by other
Publicado em: 2006
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2. GRÁFICO DE CONTROLE EWMA PARA NÃO-CONFORMIDADES COM INTERVALO DE TEMPO ENTRE AMOSTRAS VARIÁVEL / EWMA CONTROL CHART FOR NONCONFORMITIES WITH VARIABLE SAMPLING INTERVAL
The process control charts created by Shewhart in the 20`s and still in use today are efficient in signaling large shifts in the quality characteristics of a process (e.g. shifts greater than two standard deviations, in the case of the chart for means); they are however slower in the case of small and moderate shifts, in which case CUSUM and EWMA schemes are
Publicado em: 2004
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3. GRÁFICOS ADAPTATIVOS DE CONTROL DE PROCESO POR ATRIBUTOS / GRÁFICOS ADAPTATIVOS DE CONTROLE DE PROCESSO POR ATRIBUTOS / ADAPTIVE CONTROL CHARTS FOR ATTRIBUTES
It is important to investigate ways to improve the efficiency of the statistical control charts for attributes, because the controls for attributes typically require very large sample sizes for quick detection of changes in the process, and these sample sizes can be extremely undesirable or eventually unfeasible in many practical situations. The adaptive sch
Publicado em: 2000