Robust Detection of Oscillatory Failure Case in Aircraft Control Surface Servo-Loops

摘要: This chapter deals with model-based Fault Detection and Diagnosis (FDD) methods which have been recently applied to Oscillatory Failure Case (OFC) in aircraft control surface servo-loops. failure case, related the Electrical Flight Control System (EFCS), could an influence on structural loads controllability. Two will be presented and, order improve FDD performance robustness, tuning of their free design parameters are discussed. The nonlinear observer fault reconstruction via sliding-mode differentiation. efficiency above techniques illustrated through application highly representative benchmarks, real flight data, real-time implementation Airbus test facilities. In addition thrust control, principal means controlling is aerodynamic forces generated by surfaces generally movable flaps located fuselage, wing, tail. primary purpose certain (e.g., elevator, rudder, ailerons) generate moments; hence, resultant act at some distance from center mass. this section main functions briefly recalled (see Fig. 3.1).