Fault Detection Using an Adapted Interval PCA Approach

Year 2025, Volume: 8 Issue: 1, 22 - 38, 03.07.2025

Anis El Maharat , Chakour Chouaib Azzedine Hamza

https://doi.org/10.53508/ijiam.1603442

Abstract

Principal Component Analysis (PCA) is a commonly employed technique in industrial systems for process monitoring and fault diagnosis, owing to its capability to efficiently process large datasets. Traditionally, it is applied to single-valued variables, where critical information can be lost in real scenarios with data uncertainties. Interval-valued PCA methods like Symbolic Covariance PCA (SCPCA) and Complete Information PCA (CIPCA) have been developed to enhance fault detection by incorporating data uncertainties in the PCA model. This paper presents a novel adaptation of SCPCA for detecting incertain sensor faults, marking the first correct implementation of SCPCA for fault detection and isolation (FDI). It aims to compare the performance of the new SCPCA with that of CIPCA, evaluating its reliability and accuracy in detecting sensor faults in a greenhouse prototype system.

Keywords

Fault Detection , Symbolic Covariance PCA , Complete Information PCA , Interval Data

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