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Model-based fault detection and isolation for a gas-liquid separation unit

par Kinnaert, Michel ;Vrančić, Damir;Denolin, Eric ;Juričić, Dani;Petrovic, Jéléna
Référence Control engineering practice, 8, 11, page (1273-1283)
Publication Publié, 2000

Article révisé par les pairs

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Résumé :

A complete fault detection and isolation system is designed for a gas-liquid separation unit. It involves the determination and identification of grey box models, the design of a model-based residual generator, and finally the evaluation of the residuals via a set of statistical tests. The latter are cumulative sum (CUSUM) tests which are combined in such a way that both fault detection and fault isolation can be achieved. The performance of the resulting diagnosis system, such as missed alarm rate, wrong isolation rate and mean detection delay, are studied via simulations. (C) 2000 Elsevier Science Ltd. All rights reserved.