Flatness for Actuators Monitoring in Process Engineering

Authors:	El Osta Wassim, Ecole Centrale de Lille, France Bouamama Belkacem Ould, Ecole Polytechnique de Lille, France Sueur Christophe, Ecole Centrale de Lille, France
Topic:	6.4 Safeprocess
Session:	Fault Detection and Isolation for Nonlinear Systems
Keywords:	Bond graphs, Multiport, Structural analysis, Flatness, Fault Detection and Isolation

Abstract

Process engineering systems encountered in many risky industries (nuclear, chemical…) are complex because of their multidomain energy character. Actuators are the main elements for their control design. They need for their safety a monitoring system. The monitorability model based analysis (ability to detect and to isolate an actuator fault) is based on the structured residual analysis using analytical redundancy or covering causal path based on bond graph methodology. The present paper proposes a new approach based on flatness topology for actuator monitorability analysis. The developed approach is illustrated by a thermofluid application (a non-linear multienergy system).