Constructing a Sensitive Control Chart to Monitor Process Mean using Optimal Filter: Time-Frequency Analysis Approach
نویسندگان
چکیده
Control charts are one of the critical tools for process monitoring. Test statistics computed as a function sample means in control monitoring mean. In this study, these functions modeled by filters. These filters have essential properties both time and frequency domains. previous studies, only their domain been considered. Thus, resulting sub-optimal performance. This study investigates optimal design The behavior is analyzed not but also domain. Properties such stability, causality, minimum phase, lowpass considered designing filter. An optimization model designed solved using Genetic Algorithm based on to minimize Average Run Length. proposed filter compared with other simulation studies. Results showed high speed detecting shifts used monitor oil price OPEC basket. results that were detected at right
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ژورنال
عنوان ژورنال: Scientia Iranica
سال: 2023
ISSN: ['1026-3098', '2345-3605']
DOI: https://doi.org/10.24200/sci.2023.61463.7321