Early and robust detection of Oscillatory Failure Cases (OFC) in the Flight Control System: a data driven technique

11/12/2015
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OAI : oai:www.see.asso.fr:1146:14600
DOI :

Résumé

Early and robust detection of Oscillatory Failure Cases (OFC) in the Flight Control System: a data driven technique

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© AIRBUS Operations S.A.S. All rights reserved. Confidential and proprietary document. Early and robust detection of Oscillatory Failure Cases (OFC) in the Flight Control System: a data driven technique 07/12/2015OFC Detection Supervisors Dr. GOUPIL Philippe Prof. CHAUMETTE Eric Prof. TOURNERET Jean-Yves Eng. DAYRE Remy URBANO Simone Simone.URBANO@supaero.isae.fr Page 1 © AIRBUS Operations S.A.S. All rights reserved. Confidential and proprietary document. Context – OFC and weight saving Flight Control System failures lead to undesired oscillations (OFC) and thus to local structural load augmentation ! 07/12/2015OFC Detection Page 2 • A380: Model based approach • A350: + Extended Kalman Filter (EKF) OFC OFC © AIRBUS Operations S.A.S. All rights reserved. Confidential and proprietary document. DATA DRIVEN MODEL BASED 07/12/2015OFC Detection Page 3 Command Real System System Model Residual Decision Making Measured Position Estimated Position Command Measured Position Real System Similarity computation Decision Making State of the art – Model based approach and Data driven technique © AIRBUS Operations S.A.S. All rights reserved. Confidential and proprietary document. SELECTED APPROACH Data driven techniques – Investigated approaches 07/12/2015OFC Detection Page 4 By Category: • Frequency • Time/Frequency • Probabilistic • Distance based • Statistical / Correlation • Distance & Correlation • Domain based • Derivative • Fault modelling Command Measured Position Confirmation Time Decision Making Sub-band Filtering Distance & Correlation Computation More than 20 methods coded and tested. More than 100 bibliographic references. OFC OFC © AIRBUS Operations S.A.S. All rights reserved. Confidential and proprietary document. 07/12/2015OFC Detection © AIRBUS Operations S.A.S. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of AIRBUS Operations S.A.S. No intellectual property rights are granted by the delivery of this document or the disclosure of its content. This document shall not be reproduced or disclosed to a third party without the express written consent of AIRBUS Operations S.A.S. This document and its content shall not be used for any purpose other than that for which it is supplied. The statements made herein do not constitute an offer. They are based on the mentioned assumptions and are expressed in good faith. Where the supporting grounds for these statements are not shown, AIRBUS Operations S.A.S will be pleased to explain the basis thereof. AIRBUS, its logo, A300, A310, A318, A319, A320, A321, A330, A340, A350, A380, A400M are registered trademarks. Q & A Thank you for your attention ! Page 5