Problems of Assignable Causes in Process Monitoring and Adjustment

공정 모니터링과 조절에 있어 이상원인의 문제

Assignable causes producing temporary deviation from the underlying system can influence on process adjustment and process monitoring in dynamic feedback control system. In this paper, the impact of assignable causes on EWMA forecasts and process adjustment which is based on the EWMA forecasts are derived for optimum control methods.