In this paper, we Investigate rationales for feedback adjustment using some techniques associated with automatic process control based on some nonstatioary disturbance models. Feedback-control schemes are often operated so that the nature of the disturbance that is being compensated is concealed and unusual deviations from the target cannot be taken account of. In this connection feedback control schemes is useful to extend the idea of common causes and special causes to such systems. Minimum-cost feedback schemes are discussed for some simple ,but practically interesting ,models.

Abstract
 1. 서론
 2. 연구의 방법
  2.1 관리도와 공정조절의 연계
  2.2 단순한 피드백 관리
 3. 평균이동을 고려한 각란 모형 개발
  3.1. 각란 모형의 선택
  3.2. 베리오 그램에 의한 각란모형
  3.3. 선형적으로 증가하는 베리오그램에 의한 고착신기축 모형
  3.4. 공정간의 평균 이동에 관한 모형
  3.5. MMSE 컨트롤러
  3.6. PI 조절
 4. 최적 코스트 조절
  4.1 샘플링 간격 고정
  4.2 샘플링 간격이 고정되 않았을 때 최소 비용체계
 5. 결론 및 향후의 과제
 참고문헌

• 김종걸 | Jong-Gurl, Kim
• 정해운 | Hae-woon, Jung