Identification of analytical redundancy relations design for sensor fault diagnosis of a wastewater treatment station

Yvon Tharrault (1) , Gilles Mourot (1) , José Ragot (1) , David Fiorelli (2) , Serge Gillé (2)

1 CRAN - Centre de Recherche en Automatique de Nancy
2 LTI - Laboratoire des Technologies Industrielles

This article deals with identification design for sensor fault diagnosis of a wastewater treatment station. First, we established a physical model of this station by simplifying and linearizing the model ASM1 (Henze et al., 1987). Then, we study the measurement values in order to find other redundancy equations. Multiple linear regression allowed the determination of a static black box type model, coherent with the physical model. The addition of temporal lags between the signals makes possible to improve the performances of this model. We show finally the use of this model for detection-localization of faults measurements.

Mots clés: Diagnostic; ASM1; Data validation; Identification

Domaines: Automatique / Robotique

Yvon Tharrault, Gilles Mourot, José Ragot, David Fiorelli, Serge Gillé. Identification of analytical redundancy relations design for sensor fault diagnosis of a wastewater treatment station. Nov 2006, pp.CDROM. ⟨hal-00121477⟩