Oscillatory Failure Case detection for new generation Airbus aircraft: A model-based challenge

摘要: Robust and early detection of Oscillatory Failure Case (OFC) in the Electrical Flight Control System (EFCS) new generation aircraft (A/C) appears to be a challenging problem. OFC leads strong interactions with loads aero-elasticity consequently must detected time. A robust analytical redundancy-based technique implemented A380 Computer (FCC) is used for detecting such unauthorized oscillatory events. The has been successfully validated provides complete coverage without false alarms EFCS. However, upcoming future A/C, it could required detect less important amplitude. To meet this requirement, becomes necessary get more sensitive fault indicating signals. It shown that model quality can significantly improved by reliable estimating some physical parameters. signals obtained proposed methodology are compared those from FCC during flight tests. results quite encouraging suggest amplitude strategy.