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Nonlinear robust control of tail-sitter aircrafts in flight mode transitions

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journal contribution
posted on 2018-11-06, 14:53 authored by Zhaoying Li, Lixin Zhang, Hao Liu, Zongyu Zuo, Cunjia LiuCunjia Liu
© 2018 Elsevier Masson SAS In this paper, a nonlinear robust controller is proposed to deal with the flight mode transition control problem of tail-sitter aircrafts. During the mode transitions, the control problem is challenging due to the high nonlinearities and strong couplings. The tail-sitter aircraft model can be considered as a nominal part with uncertainties including nonlinear terms, parametric uncertainties, and external disturbances. The proposed controller consists of a nominal H∞controller and a nonlinear disturbance observer. The nominal H∞controller based on the nominal model is designed to achieve the desired trajectory tracking performance. The uncertainties are regarded as equivalent disturbances to restrain their influences by the nonlinear disturbance observer. Theoretical analysis and simulation results are given to show advantages of the proposed control method, compared with the standard H∞control approach.

Funding

This work was supported by the National Natural Science Foundation of China under Grants 61503012 and 61673034, and the Fundamental Research Funds for the Central Universities under Grants YWF-18-BJ-Y-81 and YWF-17-BJ-Y-86.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

Aerospace Science and Technology

Volume

81

Pages

348 - 361

Citation

LI, Z. ... et al., 2018. Nonlinear robust control of tail-sitter aircrafts in flight mode transitions. Aerospace Science and Technology, 81, pp. 348-361.

Publisher

© Elsevier

Version

  • AM (Accepted Manuscript)

Publisher statement

This paper was accepted for publication in the journal Aerospace Science and Technology and the definitive published version is available at https://doi.org/10.1016/j.ast.2018.08.021.

Acceptance date

2018-08-15

Publication date

2018-08-22

ISSN

1270-9638

Language

  • en