Robustness Improvment of Actuator Nonlinear Geometric Approach FDI

This paper proposes the development of a robust FDI scheme based on the NonLinear Geometric Approach. New guidelines for optimizing the robustness of the nonlinear generators with respect to modelling errors and disturbance are given. In order to verify the residual generators robustness, an aircraft nonlinear simulation model embedding the effects of wind gusts, atmospheric turbulence and measurement errors is adopted. Moreover the robustness with respect to a change of the flight condition is tested by simulating a typical aircraft reference trajectory embedding several steady–state flight conditions, such as straight flight phases and coordinated turns.