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Adaptive control algorithms are of interest in flight control systems design not only for their capability to improve performance and reliability but also for handling aerodynamic parameter uncertainties, external disturbances and modeling inaccuracies. In this paper, a direct adaptive sliding mode control is developed for the quadrotor attitude(More)
With the growth of civil aviation traffic, enhanced accuracy performances are required from guidance systems to maintain efficiency and safety in flight operations. This communication proposes a new representation of aircraft flight dynamics at approach for landing and a space-based nonlinear dynamic inversion control for a transportation aircraft. The main(More)
Adaptive control algorithms are of interest in the flight control systems design not only for their capability to improve performance and reliability but also for handling aerodynamic parameter uncertainties, external disturbances and modeling inaccuracies. This paper addresses a nonlinear direct adaptive sliding mode controller to perform a flight path(More)
In this communication we consider a transportation airplane in the situation in which a main aerodynamic actuator failure occurs while he has either to maintain trim conditions or to perform guidance maneuvers. Depending of the extension and the importance of the failure and considering the redundant effects from other actuators, three cases can be(More)
In this study it is considered that in regions presenting high air traffic density, traffic can be organized along main airstreams using common spatial reference tracks. The adoption of such spatial references should ease the traffic separation task. The concept of airstream is introduced as well as the basis for a spatial indexed guidance law allowing(More)
With the growth of civil aviation traffic capacity, safety and environmental considerations urge today for the development of guidance systems with improved accuracy for spatial and temporal trajectory tracking. This should induce increased capacity by allowing safe operations at minimum separation standards. Also, at take-off and landing, trajectory(More)
The purpose of this communication is to investigate the interest of using a spatial reference for performing first aircraft trajectory generation and then trajectory tracking while overfly or arrival time constraints are imposed. The adoption of a space reference leads us to rewrite the aircraft flight dynamics. Then an aircraft trajectory optimization(More)
— The purpose of this communication is to investigate the effectiveness of a spatial indexed guidance law to perform longitudinal trajectory tracking with overfly time constraints. The aircraft flight dynamics are expressed in a space indexed frame and a nonlinear control structure is adopted. The influence of wind and navigation estimation errors on the(More)
Adaptive control is of interest in control systems design not only for its capability to improve performance and reliability but also for handling parameters uncertainties, external disturbances and modeling inaccuracies. This paper addresses a systematic procedure design to develop an adaptive backstepping tracking control approach for a second-order class(More)
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