Proceedings of the Safety Management and Science Conference (대한안전경영과학회:학술대회논문집)
- 2013.04a
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- Pages.547-556
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- 2013
Research Results and Trends Analysis on Process Control Charts for Non-normal Process
비정규 공정을 위한 공정관리도의 연구동향 분석
Abstract
Control chart is most widely used in SPC(Statistical Process Control), Recently it is a critical issue that the standard control chart is not suitable to non-normal process with very small percent defective. Especially, this problem causes serious errors in the reliability procurement, such as semiconductor, high-precision machining and chemical process etc. Procuring process control technique for non-normal process with very small percent defective and perturbation is becoming urgent. Control chart technique in non-normal distribution become very important issue. In this paper, we investigate on research trend of control charts under non-normal distribution.