Parametric Fault Detection in Nonlinear Systems - A Recursive Subspace-based Approach

Paulo Gil, Fábio Santos, Alberto Cardoso, Luis Palma

2013

Abstract

This paper deals with the problem of detecting nolinear systems’ parametric faults modeled as changes in the eigenvalues of a local linear state-space model. The linear state-space model approximations are obtained by recursive subspace system identification techniques, from which the eigenvalues are extracted at each sampling time. Residuals are generated by comparing the eigenvalues against those associated with a local nominal model derived from a neural network predictor describing the nonlinear plant dynamics in free fault conditions. Parametric fault symptoms are generated from the eigenvalues residuals, whenever a given predefined threshold is exceeded. The feasibility and effectiveness of the proposed framework is demonstrated in a practical case study.

Paper Citation

in Harvard Style

Gil P., Santos F., Cardoso A. and Palma L. (2013). Parametric Fault Detection in Nonlinear Systems - A Recursive Subspace-based Approach . In Proceedings of the 10th International Conference on Informatics in Control, Automation and Robotics - Volume 1: ICINCO, ISBN 978-989-8565-70-9, pages 82-88. DOI: 10.5220/0004422100820088

in Bibtex Style

@conference{icinco13,
author={Paulo Gil and Fábio Santos and Alberto Cardoso and Luis Palma},
title={Parametric Fault Detection in Nonlinear Systems - A Recursive Subspace-based Approach},
booktitle={Proceedings of the 10th International Conference on Informatics in Control, Automation and Robotics - Volume 1: ICINCO,},
year={2013},
pages={82-88},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004422100820088},
isbn={978-989-8565-70-9},
}

in EndNote Style

TY - CONF
JO - Proceedings of the 10th International Conference on Informatics in Control, Automation and Robotics - Volume 1: ICINCO,
TI - Parametric Fault Detection in Nonlinear Systems - A Recursive Subspace-based Approach
SN - 978-989-8565-70-9
AU - Gil P.
AU - Santos F.
AU - Cardoso A.
AU - Palma L.
PY - 2013
SP - 82
EP - 88
DO - 10.5220/0004422100820088