Autonomy in accomplishing a planned flight mission is a crucial requirement for unmanned aerial vehicles. To achieve this goal, the flight control system of the aircraft must feature a high level of robustness against model and parameter uncertainties as well as significant adaptability in order to be able to cope with disturbances and failure conditions. Furthermore, adherence to the operational envelope of the aircraft must be ensured. An adaptive control concept, based on nonlinear dynamic inversion is presented, that meets the requirements stated above and allows tracking complex, three-dimensional trajectories at a high bandwidth and with high accuracy. The system allows the full exploitation of the physical capabilities of the airframe and accounts for saturation effects in control deflections and rates. The assessment of the system is performed on the basis of nonlinear simulations utilizing a complex simulation model.
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Autonomy in accomplishing a planned flight mission is a crucial requirement for unmanned aerial vehicles. To achieve this goal, the flight control system of the aircraft must feature a high level of robustness against model and parameter uncertainties as well as significant adaptability in order to be able to cope with disturbances and failure conditions. Furthermore, adherence to the operational envelope of the aircraft must be ensured. An adaptive control concept, based on nonlinear dynamic in...
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