Novel adaptive approach for anomaly detection in nonlinear and time-varying industrial systems

Abstract The present research describes a novel adaptive anomaly detection method to optimize the performance of nonlinear and time-varying systems. The proposal integrates a centroid-based approach with the real-time identification technique Recursive Least Squares. In order to find anomalies, the...

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Bibliographic Details
Published in:Logic journal of the IGPL 2024-05
Main Authors: Michelena, Álvaro, Zayas-Gato, Francisco, Jove, Esteban, Casteleiro-Roca, José-Luis, Quintián, Héctor, Fontenla-Romero, Óscar, Luis Calvo-Rolle, José
Format: Article
Language:English
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Summary:Abstract The present research describes a novel adaptive anomaly detection method to optimize the performance of nonlinear and time-varying systems. The proposal integrates a centroid-based approach with the real-time identification technique Recursive Least Squares. In order to find anomalies, the approach compares the present system dynamics with the average (centroid) of the dynamics found in earlier states for a given setpoint. The system labels the dynamics difference as an anomaly if it rises over a determinate threshold. To validate the proposal, two different datasets obtained from a level control plant operation have been used, to which anomalies have been artificially added. The results shown have determined a satisfactory performance of the method, especially in those processes with low noise.
ISSN:1367-0751
1368-9894
DOI:10.1093/jigpal/jzae070