Comparison of short runs control chart and T2 Hotelling control chart for monitoring sunergy glass production process

In recent years, the manufacturing industry has tended to reduce mass production and produce in small quantities, which is called "Short Run Production". In such a situation, the course of the production process is short, usually, the number of productions is less than 50. Therefore, a control chart for the short run production process is required. This paper discusses the comparison between multivariate control chart for short run production (V control chart) and T²Hotelling control chart applied to sunergy glass data. Furthermore, a simulation of Average Run Length (ARL) was carried out to determine the performance of the two control charts. The results obtained are that the production process has not been statistically controlled using either the V control chart or the T²Hotelling control chart. The number of out-of-control on the control chart V using the the EWMA test is more than the T²Hotelling control chart. Based on the ARL value, it shows that the V control chart is more sensitive than the T²Hotelling control chart.