Abstract

Purpose: The problem for the traditional control chart is that it is unable to monitor the very small fraction of nonconforming and the underlying distribution is the normal distribution.  control chart is useful where it controls the vert small fraction on nonconforming. In this study, we will design the  control chart in order to use under non-normal process. Methods:   is calculated not by failure rate based on attribute data but using variable data. Control limit for non-normal  control chart is designed based on -risk calculated by cumulative distribution function of Burr distribution. -risk, which is for performance evaluation, obtains in the Burr distribution's cumulative distribution function and control limit. Results: The control limit for non-normal  control chart is designed based on Burr distribution. The sensi- tivity can be checked through ARL table and OC curve. Conclusion: Non-normal  control chart is able to control not only the very small fraction of nonconforming, but it is also useful when   distribution is non-normal distribution.

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