Local T2 Control Charts for Process Control in Local Structure and Abnormal Distribution Data

Kim, Jeong-Hun; Kim, Seoung-Bum

doi:2012.40.3.337

Journal of Korean Society for Quality Management > Volume 40(3); 2012 > Article

Journal of Korean Society for Quality Management 2012;40(3): 337-.
doi: https://doi.org/10.7469/JKSQM.2012.40.3.337

지역적이고 비정규분포를 갖는 데이터의 공정관리를 위한 지역기반 T²관리도

김정훈, 김성범

고려대학교 산업경영공학과

Local T² Control Charts for Process Control in Local Structure and Abnormal Distribution Data

Jeong-Hun Kim, Seoung-Bum Kim

School of Industrial Management Engineering, Korea University

ABSTRACT

Purpose:
A Control chart is one of the important statistical process control tools that can improve processes by reducing variability and defects.
Methods:
In the present study, we propose the local $T^2$ multivariate control chart that can efficiently detect abnormal observations by considering the local pattern of the in-control observations.
Results:
A simulation study has been conducted to examine the property of the proposed control chart and compare it with existing multivariate control charts.
Conclusion:
The results demonstrate the usefulness and effectiveness of the proposed control chart.

Key Words: Multivariate Control Chart;Statistical Process Control;Bootstrap;Data Mining;Local Structure Data;