Design of Backstepping Flight Control Law for UAV Based on Singular Perturbation Theory

LI Yong; CHANG Xucheng; LI Shuhao

doi:10.15892/j.cnki.djzdxb.2022.03.018

Journal of Projectiles, Rockets, Missiles and Guidance >

2022 , Vol. 42 >Issue 3: 89 - 96

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2022.03.018

Design of Backstepping Flight Control Law for UAV Based on Singular Perturbation Theory

LI Yong ,
CHANG Xucheng ,
LI Shuhao

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School of Aero Engine,Zhengzhou University of Aeronautics, Zhengzhou 450046,China

Received date: 2021-12-27

Online published: 2025-02-03

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Abstract

In order to meet the requirements of the practical flight control system of a small UAV, a design method of nonlinear flight control law is proposed, which is based on the backstepping method of singular perturbation theory and improves the traditional backstepping design method. This method uses measurement data rather than model knowledge in the implementation process, so it is suitable for a wider range of small general-purpose aircraft or UAV series. The performance of the controller is simulated and analyzed for the aircraft model developed by a small UAV. The results show that the measurement noise has little effect on the flight control. The controller can obtain good tracking performance (whether there is uncertainty or not) and ensure the stability of the controlled system at the same time. The new controller developed in this paper has more advantages than the traditional backstepping method, that is, the model uncertainty has less impact on the performance, so the design method of the controller plays a further role in promoting the certification of UAV advanced flight control law.

Key words： unmanned aerial vehicle; singular perturbation theory; backstepping; flight control law; nonlinear

Cite this article

LI Yong , CHANG Xucheng , LI Shuhao . Design of Backstepping Flight Control Law for UAV Based on Singular Perturbation Theory[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2022 , 42(3) : 89 -96 . DOI: 10.15892/j.cnki.djzdxb.2022.03.018

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