EPC seeks to minimize variability by transferring the output variable to a related process input(controllable) variable, while SPC seeks to reduce variability by detecting and eliminating assignable causes of variation. Tn the case of product control, a very reasonable objective is to try to minimize the variance of the output deviations from the target or set point. We consider an alternative EPC model with second-order autoregressed disturbance. We compare three control systems; EPC, EPC combined system with EWMA, CUSUM and Shewhart. This paper shows through simulation that the performance of the integrated model of EPC and SPC is more preferable than that of EPC.

Abstract
 1. 서론
 2. EPC와 SPC통합 모형의 설계
  2.1 이계자기회귀 각란(捔亂)모형에 의한 공정조절모형의 설계
  2.2 맥그리거모형과 제안된 EPC모형 비교
 3. EPC와 SPC의 통합모형의 수행도 평가
  3.1 모형의 수행도 평가의 절차 및 특성
  3.2 통합모형의 수행도 측정 결과
 4. 결론
 5. 참고문헌

• 정해운 | Jung Hae Woon