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Robust Adaptive Nonlinear Attitude Control for a Quadrotor UAV
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摘要
This paper proposes a robust adaptive Backstepping controller for the quadrotor attitude dynamics. The attitude dynamic model is obtained to translate into a MIMO nonlinear system with generalized uncertainty. To overcome complex disturbances from various uncertainties, we design a strict feedback controller for the system. It's used to counteract the influence of the uncertainties by robust adaptive function, which includes matched disturbance and unmatched disturbance. We propose a new way to estimate the differential signal of the virtual control law and reduces the "computer explosion" problem. The tracking differentiator system is proved to be stable by the Lyapunov stability theorem. The validity and robustness of the proposed control strategy are demonstrated by simulations.
This paper proposes a robust adaptive Backstepping controller for the quadrotor attitude dynamics. The attitude dynamic model is obtained to translate into a MIMO nonlinear system with generalized uncertainty. To overcome complex disturbances from various uncertainties, we design a strict feedback controller for the system. It's used to counteract the influence of the uncertainties by robust adaptive function, which includes matched disturbance and unmatched disturbance. We propose a new way to estimate the differential signal of the virtual control law and reduces the "computer explosion" problem. The tracking differentiator system is proved to be stable by the Lyapunov stability theorem. The validity and robustness of the proposed control strategy are demonstrated by simulations.
引文
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