CUSUM control charts are widely used in process with small shifts since they have reasonable detection capability for small shifts. CUSUM control charts, however, are less effective in detection for recurring cycles or frequent small shifts in process. With Shewhart control charts, we have applied the variety of run rules to check the stability of process in addition to the situations that some points fall outside the control limits. In this paper, we propose the Z-CUSUM control chart.

Abstract
 1. 서 론 (Introduction)
 2. 패선 발생 시 CUSUM 관리도의 문제점 인식
 3. Z-CUSUM 관리도의 설계
 4. Heuristic 접근에 의한 Z-CUSUM 관리도의 RUN RULES의 발견
 5. 결 론
 참고문헌

• 강해운(한양대학교 산업공학과)
• 강창욱(한양대학교 산업공학과)