In this paper we consider the problem of detecting and isolating sensor faults on a small commercial aircraft in the presence of external disturbances and uncertainties. A nonlinear observer based approach is proposed which makes use of the complete nonlinear model of the aircraft. This approach is based on the so-called unknown input observers (UIO) theory and guarantees disturbance decoupling, H-infinity performance, and an ȧssigned rate of convergence for the estimation errors. A comparison between the application of the standard UIO based FDI scheme, and the proposed nonlinear scheme shows the benefits of this technique. Some numerical simulations are carried out on the model of the small commercial aircraft under consideration in the Brite Euram ADFCS-II project.
A Nonlinear UIO Scheme for the FDI on a small commercial Aircraft
MATTEI, Massimiliano;
2002
Abstract
In this paper we consider the problem of detecting and isolating sensor faults on a small commercial aircraft in the presence of external disturbances and uncertainties. A nonlinear observer based approach is proposed which makes use of the complete nonlinear model of the aircraft. This approach is based on the so-called unknown input observers (UIO) theory and guarantees disturbance decoupling, H-infinity performance, and an ȧssigned rate of convergence for the estimation errors. A comparison between the application of the standard UIO based FDI scheme, and the proposed nonlinear scheme shows the benefits of this technique. Some numerical simulations are carried out on the model of the small commercial aircraft under consideration in the Brite Euram ADFCS-II project.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
