Effect of the measurement errors on two one-sided Shewhart control charts for monitoring the ratio of two normal variables - Archive ouverte HAL
Article Dans Une Revue Quality and Reliability Engineering International Année : 2020

Effect of the measurement errors on two one-sided Shewhart control charts for monitoring the ratio of two normal variables

Résumé

Monitoring the ratio between two random normal variables plays an important role in many industrial manufacturing processes. In this paper , we suggest designing two one-sided Shewhart control charts monitoring this ratio. The numerical results show that the one-sided charts have more advantages compared to the two-sided Shewhart chart proposed previously in the literature. Moreover, we investigate the effect of measurement error on the performance of these control charts where the measurement error is supposed to follow a linear covariate error model. The change of model parameters from an in-control condition to an out-of-control is presented without using a strict assumption about the independence of the shift size from measurement errors. A valuable finding from this study is that taking multiple measurements per item is not an effective way to reduce the negative effect of measurement error on the Shewhart charts' performance.
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Dates et versions

hal-02562701 , version 1 (04-05-2020)

Identifiants

Citer

Huu Du Nguyen, Kim Phuc Tran. Effect of the measurement errors on two one-sided Shewhart control charts for monitoring the ratio of two normal variables. Quality and Reliability Engineering International, 2020, ⟨10.1002/qre.2656⟩. ⟨hal-02562701⟩
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