基于扰动观测器的飞行器轨迹跟踪控制器设计

doi:10.12305/j.issn.1001-506X.2022.08.24

Abstract

Abstract:

Aiming at the tracking of the three-dimensional trajectory of fixed-wing aircraft under various disturbances, a non-singular fast terminal sliding mode (TSM) trajectory tracking controller based on an improved nonlinear disturbance observer is proposed. Firstly, a three-dimensional trajectory tracking error model of the fixed-wing aircraft is derived. Considering the model error and the unknown disturbance during the flight, a nonlinear disturbance observer based on state estimation error feedback is designed to observe disturbances. Based on the non-singular fast TSM control method, the trajectory tracking controller is designed with the double power reaching law, and the stability of the closed-loop control system is proved. Simulation results show that the designed trajectory tracking controller can accurately and stably track the three-dimensional maneuvering trajectory under various disturbances.

Key words: trajectory tracking, disturbance observer, terminal sliding mode (TSM), double power reaching law, fixed-wing aircraft

CLC Number:

TJ765

Chuanxu LI, Xiuyun MENG, Jie WANG. Design of aircraft trajectory tracking controller based on disturbance observer[J]. Systems Engineering and Electronics, 2022, 44(8): 2593-2600.

Figures/Tables 7

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References 30

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Design of aircraft trajectory tracking controller based on disturbance observer

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