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CEAS EuroGNC 2024

Comparison of state observer schemes for leak detection and isolation: Application to the feeding lines of a reusable launcher
Renato Murata PhD student, DTIS, ONERA, Université Paris Saclay, F-91120 , Palaiseau, France.
Julien Marzat Research Scientist, DTIS, ONERA, Université Paris Saclay, 91120, Palaiseau, France.
Hélène Piet-Lahanier Research Scientist, DTIS, ONERA, Université Paris Saclay, 91120, Palaiseau, France.
Sandra Boujnah Research Scientist, Sous-Direction Techniques Systèmes de Transport Spatial, CNES, 75612, Paris, France.
François Farago Research Scientist, Sous-Direction Techniques Systèmes de Transport Spatial, CNES, 75612, Paris, France.
Abstract:
This paper presents a comparison between three state observer schemes, including a nonlinear high-gain observer, a Luenberger observer, and an unknown input observer, in order to detect and isolate leaks in the propellant feeding system of a reusable launcher. The results show that the high-gain observer had the best overall performance. On the other hand, due to decoupling strategies, the bank of unknown input observers generates a more robust fault signature matrix. Monte Carlo experiments under realistic measurement noise assumptions are included to compare the proposed approaches.
Keywords: Normal canonical form; Sequential Probability Ratio Test; Fault Signature Matrix; Monte Carlo simulations
 View PDF CEAS-GNC-2024-004


Renato Murata, Julien Marzat, Hélène Piet-Lahanier, Sandra Boujnah, François Farago: Comparison of state observer schemes for leak detection and isolation: Application to the feeding lines of a reusable launcher. Proceedings of the 2024 CEAS EuroGNC conference. Bristol, UK. June 2024. CEAS-GNC-2024-004.
BibTeX entry:

@Incollection{CEAS-GNC-2024-004,
    author = {Murata, Renato and Marzat, Julien and Piet-Lahanier, Hélène and Boujnah, Sandra and Farago, François},
    title = {Comparison of state observer schemes for leak detection and isolation: Application to the feeding lines of a reusable launcher},
    booktitle = {Proceedings of the 2024 {CEAS EuroGNC} conference},
    address = {Bristol, UK},
    month = jun,
    year = {2024},
    note = {CEAS-GNC-2024-004}
}