Results 11 to 20 of about 2,575 (240)
Advances in Mechanical Engineering, 2018 In this article, building a controlled system with velocity feedback in the inner loop for a platform driven by piezoelectric motors is investigated. Such a motion control system is subject to disturbance such as friction, preload, and temperature rise ...
Yung Ting, Tho Van Nguyen, Jia-Ci Chen
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PLoS ONEThis study aims to develop a nonparametric mixed exponentially weighted moving average-moving average (NPEWMA-MA) sign control chart for monitoring shifts in process location, particularly when the distribution of a critical quality characteristic is ...
Muhammad Ali Raza +5 more
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Moving Sum versus Exponentially Weighted Moving Average Tests
, 2015 (Deutsch:) Die Arbeit „Moving Sum versus Exponentially Weighted Moving Average Tests“ führt ein aus der Statistischen Prozesskontrolle (SPC) bekanntes Verfahren zur Detektion von Strukturbrüchen in laufenden Zeitreihen in die Ökonometrie ein und vergleicht dieses mit dort etablierten Tests.
Wullers, Dominik
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Hybrid Exponentially Weighted Moving Average Chart Using Exponential Distribution
Journal of Computational and Theoretical Nanoscience, 2017 In this manuscript, a new hybrid exponentially weighted moving average chart using the exponential distribution is given. The complete structure of the proposed control chart is given. A Monte Carlo simulation is given for the proposed control chart. The necessary measurements to show the performance of the proposed chart are also given.
Arif, O.H., Aslam, M., Jun, C.-H.
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New extended exponentially weighted moving average control chart for monitoring process mean
HeliyonIn this article, we develop a new control chart based on the Exponentially Weighted Moving Average (EWMA) statistic, termed the New Extended Exponentially Weighted Moving Average (NEEWMA) statistic, designed to recognize slight changes in the process ...
Hina Javed, Muhammad Ismail, Nadia Saeed
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Inference for asymmetric exponentially weighted moving average models
Journal of Time Series Analysis, 2019 The exponentially weighted moving average (EWMA) model in ‘Risk‐Metrics’ has been a benchmark for controlling and forecasting risks in financial operations. However, it is incapable of capturing the asymmetric volatility effect and the heavy‐tailed innovation, which are two important stylized features of financial returns.
Li, Dong, Zhu, Ke
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Kuwait Journal of Science, 2020 In this paper different schemes of ranked set sampling (RSS) are used to design a new hybrid exponentially weighted moving average (HEWMA) control chart having more sensitivity to small and moderate shifts.The suggested control chart dominates ...
Muhammad Noor ul amin +3 more
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Design Strategies for the Multivariate Exponentially Weighted Moving Average Control Chart
Quality and Reliability Engineering International, 2004 The multivariate exponentially weighted moving average (MEWMA) control chart has received significant attention from researchers and practitioners because of its desirable properties.
Murat Caner Testik, Connie M Borror
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A Robust Phase I Exponentially Weighted Moving Average Chart for Dispersion
Quality and Reliability Engineering International, 2014 A Phase I estimator of the dispersion should be efficient under in‐control data and robust against contaminations. Most estimation methods proposed in the literature are either efficient or robust against either sustained shifts or scattered disturbances.
Inez Maria Zwetsloot +2 more
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PLoS ONE, 2022 Control charts are an amazing and essential statistical process control (SPC) instrument that is commonly used in monitoring systems to detect a specific defect in the procedure.
Khanittha Talordphop +2 more
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