Problems of Assignable Causes in Dynamic Feedback Process Control

동적 피드백 공정조절에 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 influence of assignable causes on EWMA forecasts and compensatory variables are derived for a dynamic feedback control system. An example is presented to confirm the impact numerically through the analysis of a data.