Quadcopter UAVs Extended States/Disturbance Observer-Based Nonlinear Robust Backstepping Control.

Autor: Thanh, Ha Le Nhu Ngoc, Huynh, Tuan Tu, Vu, Mai The, Mung, Nguyen Xuan, Phi, Nguyen Ngoc, Hong, Sung Kyung, Vu, Truong Nguyen Luan
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Zdroj: Sensors (14248220); Jul2022, Vol. 22 Issue 14, pN.PAG-N.PAG, 20p
Abstrakt: A trajectory tracking control for quadcopter unmanned aerial vehicle (UAV) based on a nonlinear robust backstepping algorithm and extended state/disturbance observer (ESDO) is presented in this paper. To obtain robust attitude stabilization and superior performance of three-dimension position tracking control, the construction of the proposed algorithm can be separated into three parts. First, a mathematical model of UAV negatively influenced by exogenous disturbances is established. Following, an extended state/disturbance observer using a general second-order model is designed to approximate undesirable influences of perturbations on the UAVs dynamics. Finally, a nonlinear robust controller is constructed by an integration of the nominal backstepping technique with ESDO to enhance the performance of attitude and position control mode. Robust stability of the closed-loop disturbed system is obtained and guaranteed through the Lyapunov theorem without precise knowledge of the upper bound condition of perturbations. Lastly, a numerical simulation is carried out and compared with other previous controllers to demonstrate the great advantage and effectiveness of the proposed control method. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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