Design and investigation of EWMA and double EWMA with quadratic process model in R2R controllers

Design and investigation of EWMA and double EWMA with quadratic process model in R2R controllers In the last few years, “Run-to-Run” (R2R) control techniques have been developed and used to control various processes in industries. These techniques combine control engineering and statistical process control techniques. The R2R controller is basically consists of a linear regression model that relates the input variables to the output variables using Exponentially Weighted Moving Average (EWMA) or double EWMA (dEWMA) scheme. In this paper, we have developed a quadratic R2R controller model as an extension of Box, Luceno and Del Castillo models. The validity and performance of the developed models were tested in the magnetic ceramic process. By this study we have found that the quadratic model improves capability of process and applying dEWMA procedure decreases variance of the response variables. The results of the study shows that the quadratic R2R control models outperform linear R2R controls in the certain manufacturing process. Quality & Quantity Springer Journals

Design and investigation of EWMA and double EWMA with quadratic process model in R2R controllers

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Springer Netherlands
Copyright © 2007 by Springer Science + Business Media B.V.
Social Sciences, general; Methodology of the Social Sciences; Social Sciences, general
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