Sliding-Mode Observer Design with Extra-Robustness and Its Application for an Aircraft Example

This paper considers the improvement of robustness properties of a particular type of sliding-mode observers and the application of this nonlinear observer to reconstruct the states of an aircraft system. Robust eigenstructure assignment together with genetic algorithm is used to select the design parameters of the sliding-mode-observer. The observer also can be implemented to detect faults based on a previously developed technique. The main advantage of this method is to minimize the system sensitive to a particular class of model uncertainties while the system has been already insensitive to match uncertainties because of using sliding-mode observers. Simulation results are provided to show the effectiveness of the proposed method.