Recently, the manufacturing process system in the industrial field has become more and more complex and has been influenced by many and various factors. Moreover, these factors have the dependent correlation rather than independent of each other. Therefore, the statistical analysis has been extended from the univariate method to the multivariate method. The process capability indices have been widely used as statistical tools to assess the manufacturing process performance. Especially, the multivariate process indices need to be enhanced with more useful information and extensive application in the recent industrial fields. The various multivariate process capability indices have been studying by many researchers in recent years. Hence, the purpose of the study is to compare the useful and various multivariate process capability indices through the simulation. Among them, we compare the useful models of several multivariate process capability indices such as MCpm, MC+pm and MCpl. These multivariate process capability indices are incorporates both the process variation and the process deviation from target or consider the expected loss caused by the process deviation from target. Through the computational examples, we compare these process capability indices and discuss their usefulness and effectiveness.

1. 서 론
 2. 다변량 공정능력지수의 모델링
  2.1 기호
  2.2 모델링 방법론
 3. 비교분석
  3.1 상관계수 변화에 따른 비교
  3.2 목표치로부터 치우침 정도에 따른 비교
  3.3 경제적 손실에 따른 비교
  3.4 손실함수의 대칭과 비대칭에 따른 비교
 4. 수치 예
 5. 결 론
 References

• Hye-Jin Moon(Department of Industrial and Management Engineering, Incheon National University) | 문혜진
• Young-Bae Chung(Department of Industrial and Management Engineering, Incheon National University) | 정영배 Corresponding Author