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Oscillatory Failure Case Detection for Aircraft using Non‐Homogeneous Differentiator in Noisy Environment

Abstract : In this paper, the problem of Oscillatory Failure Case (OFC) detection in aircraft servo-loop control surfaces is addressed. OFC leads to strong interactions with loads and aeroelasticity and consequently must be detected as quick as possible. This paper proposes a hybrid monitoring scheme developed during ADDSAFE project for robust and early detection of such unauthorized oscillatory events. More precisely, a hybrid robust non-homogeneous finite-time differentiator is firstly used to provide bounded and accurate derivatives in noisy environment. Fault reconstruction is next made by solving on-line a nonlinear equation using a gradient descent method. The detection is finally done by the decision making rules currently used for in-service Airbus A380 airplane. Robustness and performance of the proposed scheme are tested using a high fidelity benchmark and intensive Monte Carlo simulations based on several flight scenarios specified in ADDSAFE. The performance indicators highlight that the proposed scheme can be a viable solution for realistic issues. Note that the term "viable" covers some important aspects which are often under-estimated (or missing) in the classical academic publications: tuning, complexity of the design, real time capability, etc.
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Contributor : Jérome Cieslak <>
Submitted on : Wednesday, February 13, 2013 - 2:27:36 PM
Last modification on : Friday, December 11, 2020 - 6:44:06 PM


  • HAL Id : hal-00787966, version 1


Jérome Cieslak, Denis Efimov, Ali Zolghadri, David Henry, Philippe Goupil. Oscillatory Failure Case Detection for Aircraft using Non‐Homogeneous Differentiator in Noisy Environment. 2nd CEAS Specialist Conference on Guidance, Navigation & Control, Apr 2013, Delft, Netherlands. ⟨hal-00787966⟩



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