Multiple sensor fault detection in heat exchanger system

Abdel Aïtouche (1) , Didier Maquin (2) , Frédéric Busson (1)

1 LAIL - Laboratoire d'Automatique et d'Informatique Industrielle de Lille
2 CRAN - Centre de Recherche en Automatique de Nancy

A two stage strategy for fault detection isolation and estimation of multiple gross measurement errors (faults) in a class of systems described simultaneously by linear and bilinear equations is presented. The first stage consists in the detection and isolation of gross measurement errors intervening only in the linear equations. The second stage deals with the detection and isolation of gross measurement errors intervening on the bilinear equations by using corrected measurements of the preceding stage. A GLR method is employed to detect and to isolate the faults. An application of the proposed strategy is presented for a heat exchanger system for which the process model consists of a set of linear and bilinear equations. Simulations were perfonned to test the efficiency of the proposed method.

Domaines: Automatique / Robotique

Abdel Aïtouche, Didier Maquin, Frédéric Busson. Multiple sensor fault detection in heat exchanger system. IEEE International Conference on Control Applications, CCA'98, Sep 1998, Trieste, Italy. pp.741-745, ⟨10.1109/CCA.1998.721557⟩. ⟨hal-00201418⟩