공정개선 의사결정을 위한 VSI X 관리도의 경제적 설계 = Economic Design of VSI X Control Chart for Decision to Improve Process

다국어 초록 (Multilingual Abstract)

Today, the statistical process control (SPC) in manufacture environment is an important role at the process by the productivity improvement of the manufacturing systems. The control chart in this statistical method is widely used as an important statistical tool to find the assignable cause that provoke the change of the process parameters such as the mean of interest or standard deviation. But the traditional SPC don’t grasp the change of process according to the points fallen the near control limits because of monitoring the variance of process such as the fixed sampling interval and the sample size and handle the cost of the aspect of these sample point.
The control chart can be divided into the statistical and economic design. Generally, the economic design considers the cost that maintains the quality level of process. But it is necessary to consider the cost of the process improvement by the learning effects.
This study does the economic design in the VSI control chart and added the concept of loss function of Taguchi in the cost model. Also, we proved that the VSI control chart is better than the FSI in terms of the economic aspects and proposed the standard of the process improvement using the VSI control chart.

참고문헌 (Reference)

1 Lorenzen, "“The Economic Design of Control Charts ：A Unified Approach”" tech (tech): 3-10, 1986

2 Duncan, "“The Economic Design of -Charts When There is a Multiplicity of Assignable Causes” Journal of the American Statistical Association" 107-121, 1971

3 Park, "“Economic Design of a Variable Sample Size Chart” Communication in Statistics-Simulation and Computation" 467-483, 1994

4 Reynolds, "“ Charts with Variable Sampling Interval”" tech (tech): 1988181-191

5 Costa, "“ Charts with Variable Sample Size” Journal of Quality Technology" 26 : 401-407, 1994

6 Taguchi, "Quality Engineering in Production Systems" McGraw Hill inc 1989

7 and Montgomery, "Journal of Quality Technology" 164-176, 1994

8 Linderman, K, "Economic and Economic Statistical Designs for MEWMA Control Charts" 32 (32): 410-417, 2000

9 Costa, A. F. B, "Chart with Variable Smaple Size and Sampling Intervals" 29 (29): 401-407, 1997

10 Arnold, J. C, "CUSUM Control Charts With Variable Sample Sizes and Sampling Intervals" 33 (33): 66-81, 2001