Adaptive EWMA control chart by using support vector regression

• Published in: Quality and reliability engineering international 2024-11, Vol.40 (7), p.3831-3843
• Main Authors: Kazmi, Muhammad Waqas, Noor‐ul‐Amin, Muhammad
• Format: Article
• Language: English
• Subjects: Adaptive control; adaptive control chart; Control charts; Data smoothing; machine learning; Monitoring; Polynomials; Process parameters; Radial basis function; Robust control; Support vector machines; support vector regression
• ISSN: 0748-8017; 1099-1638
• DOI: 10.1002/qre.3603

Traditional control charts depend on the process parameters that are used to monitor the shifts in the process. The adaptive control charts are used to adapt a process parameter during the online monitoring. This research introduces a support vector regression (SVR) based adaptive exponentially weighted moving average control chat to enhance the monitoring of the mean in industrial processes. The study systematically investigates the comparative efficiency of linear, radial basis function (RBF), and polynomial functions within the SVR framework. The proposed SVR‐based AEWMA control chart leverages the strengths of the RBF kernel, providing a robust mechanism for detecting shifts in the process mean by adapting the smoothing constant according to the size of the shift. To validate the efficacy of the proposed methodology, a practical application is presented by using real‐life data. The application showcases the adaptability and reliability of the SVR‐based adaptive EWMA control chart in effectively monitoring location shifts.