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Incremental control and guidance of hybrid aircraft applied to the Cyclone tailsitter UAV

Abstract : Hybrid unmanned aircraft, that combine hover capability with a wing for fast and efficient forward flight, have attracted a lot of attention in recent years. Many different designs are proposed, but one of the most promising is the tailsitter concept. However, tailsitters are difficult to control across the entire flight envelope, which often includes stalled flight. Additionally, their wing surface makes them susceptible to wind gusts. In this paper, we propose incremental nonlinear dynamic inversion control for the attitude and position control. The result is a single, continuous controller, that is able to track the acceleration of the vehicle across the flight envelope. The proposed controller is implemented on the Cyclone hybrid UAV. Multiple outdoor experiments are performed, showing that unmodeled forces and moments are effectively compensated by the incremental control structure, and that accelerations can be tracked across the flight envelope. Finally, we provide a comprehensive procedure for the implementation of the controller on other types of hybrid UAVs.
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Submitted on : Saturday, February 10, 2018 - 11:07:07 AM
Last modification on : Tuesday, October 19, 2021 - 11:02:50 AM

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E. J. J. Smeur, Murat Bronz, G. C. H. E. de Croon. Incremental control and guidance of hybrid aircraft applied to the Cyclone tailsitter UAV. Journal of Guidance, Control, and Dynamics, American Institute of Aeronautics and Astronautics, 2019, ⟨10.2514/1.G004520⟩. ⟨hal-02293693v2⟩



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