The Determination of Control Limit and Testing Interval in the On-Line Quality Control of Taguchi Method

Taguchi Method의 On-Line Quality control에 있어서 관리한계 및 검사간격 결정에 대한 연구

We discuss the feed back control of the on-line QC in the Taguchi method. Taguchi(1982) used the assumptions that the quality characteristics follow an uniform distribution and the Brownian motion to draw the loss function and proposed ${\Delta}/3$ or ${\Delta}$ for the initial control limit. Adams and Woodall(1989) also proposed a different procedure but using the same loss function. We propose, in this paper the new loss function under the assumption of mainly Brownian motion and compare the results with the results of the above.