Journal of Korean Society of Industrial and Systems Engineering (산업경영시스템학회지)
- Volume 21 Issue 48
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- Pages.65-71
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- 1998
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- 2005-0461(pISSN)
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- 2287-7975(eISSN)
Robust Control Chart for the Control of the Process Mean
공정평균을 관리하기 위한 로버스트 관리도
Abstract
Control chart is a very extensively used tool in testing whether a process is in a state of statistical control or not. In this paper, a robust control chart for variables is proposed, which is based on the Huber's M-estimator. The Huber's M-estimator is a well-known robust estimator in sense of distributional robustness. In the proposed chart, the estimation of the process deviation is modified to have a stable level and high power. To compare the performances of the proposed control chart with the classical (equation omitted), some Monte Carlo simulations are performed. The simulation results show that the robust control chart has good performance.
Keywords