A special cause producing temporary deviation in the underlying process can influence on process adjustment in First-Order System feedback control system. In this paper, the impact of special causes on the forecasts and the process adjustment that is based on the EWMA forecasts are derived for a first-order system. For some special causes with patterned type of contamination, the influence of the causes on the output process are explicitly investigated. A data set, contaminated by a special cause of level shift, is analyzed to confirm the impact numerically.
목차
Abstract 1. 서론 2. 피드백 공정조정 2.1 동적 피드백 시스템 2.2 First-Order 동적 피드백 조정 3. 이상원인의 영향 3.1 이상 원인이 First-Order시스템 피드백 공정조정에 미치는 영향 3.2 이상원인이 조정편차에 미치는 영향 3.3 정형화된 이상원인이 피드백 조정에 미치는 영향 4. 자료 분석 5. 결론 6. 참고문헌
키워드
Process AdjustmentFirst-Order System Feedback ControlSpecial CauseEWMA