کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1703593 1519417 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Using a new VSI EWMA average loss control chart to monitor changes in the difference between the process mean and target and/or the process variability
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
پیش نمایش صفحه اول مقاله
Using a new VSI EWMA average loss control chart to monitor changes in the difference between the process mean and target and/or the process variability
چکیده انگلیسی

A single chart, instead of X¯ and R   charts or X¯ and S   charts, to simultaneously monitor the process mean and variability would reduce the required time and effort. A number of studies have attempted to find such charts. Moreover, a number of studies demonstrated that the adaptive control charts may detect process shifts faster than the fixed control charts. This paper proposes an easier EWMA average loss chart with variable sampling intervals to effectively monitor the process and diagnose whether the out-of-control process is caused by the changes in the difference of process mean and target or the increase in process variability, or both. Furthermore, an optimal variable sampling interval EWMA average loss chart is also proposed. An example is used to illustrate the application and evaluate the performance of the proposed control chart in detecting and diagnosing the increases in the difference of the process mean and target and/or the process variability. Numerical analyses demonstrated that the optimal VSI EWMA average loss chart outperforms the average loss chart with fixed design parameters and the Shewhart joint X¯ and S charts. Therefore, the (optimal) VSI EWMA average loss chart is recommended.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Mathematical Modelling - Volume 37, Issues 16–17, 1 September 2013, Pages 7973–7982
نویسندگان
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