4.7 Article

Three-dimensional nonlinear trajectory tracking control based on adaptive sliding mode

Journal

AEROSPACE SCIENCE AND TECHNOLOGY
Volume 128, Issue -, Pages -

Publisher

ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ast.2022.107734

Keywords

Missile; Three-dimensional trajectory tracking; Nonlinear; Adaptive control; Sliding mode control

Funding

  1. Aviation Science Foundation of China [20200001053001]
  2. Fundamental Research Funds for the Central Universities [D5000220138]

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This paper proposes a novel three-dimensional adaptive sliding mode controller for the nonlinear three-dimensional trajectory tracking of missiles. By decomposing the trajectory tracking problem into the pitch channel and the yaw channel, and introducing fast non-singular terminal sliding mode and a novel adaptive reaching law, the controller achieves rapid convergence and stability.
A novel three-dimensional adaptive sliding mode controller (ASMC) is proposed for the nonlinear three-dimensional trajectory tracking of missiles. Firstly, the three-dimensional trajectory tracking problem is decomposed into the pitch channel and the yaw channel, and the trajectory tracking control model of each channel is established, respectively. Secondly, in the design process of the controller, a fast non-singular terminal sliding mode with finite-time convergence characteristics that can avoid singularities and a novel adaptive reaching law that can avoid chattering and accelerate convergence are introduced into the two channels. Thirdly, the Lyapunov stability analysis shows that the adaptive sliding mode tracking controller proposed in this paper can guarantee the rapid convergence and stability of the closed-loop system in the presence of modeling errors. Finally, simulation results show that the controller can effectively complete trajectory tracking under the influence of the wind disturbance and mismatched disturbances. (c) 2022 Elsevier Masson SAS. All rights reserved.

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