A new model-free method performing closed-loop fault diagnosis for an aeronautical system

Julien Marzat (1, 2) , Hélène Piet-Lahanier (1) , Frédéric Damongeot (1) , Eric Walter (2)

1 ONERA - The French Aerospace Lab [Châtillon]
2 L2S - Laboratoire des signaux et systèmes

Fault diagnosis for a closed-loop controlled aeronautical system is considered. The geometry of the problem, the nonlinear model of the aircraft and two guidance laws are described. A new approach to perform fault detection, based on the study of the control signals, is then introduced. The method proposed allows the detection and isolation of actuator faults. Simulation results with measurement uncertainty illustrate the relevance of the approach. The influence of the guidance law and perspectives are discussed.

Mots clés: aircraft; closed-loop system; fault detection and isolation; fault diagnosis; guidance and control

Domaines: Automatique / Robotique

Julien Marzat, Hélène Piet-Lahanier, Frédéric Damongeot, Eric Walter. A new model-free method performing closed-loop fault diagnosis for an aeronautical system. 7th Workshop on Advanced Control and Diagnosis, ACD'2009, Nov 2009, Zielona Gora, Poland. pp.6. ⟨hal-00429745⟩