Second-order time-varying sliding mode control for reentry vehicle
International Journal of Intelligent Computing and Cybernetics
ISSN: 1756-378X
Article publication date: 19 August 2013
Abstract
Purpose
The purpose of this paper is to design a global robust and continuous control scheme for the attitude tracking control problem of the reentry vehicle with parameter uncertainties and disturbances.
Design/methodology/approach
First, feedback linearization is applied to the model of reentry vehicle, resulting in three independent uncertain subsystems. Then a new second-order time-varying sliding function is proposed, based on which a continuous second-order time-varying sliding mode control (SOTVSMC) law is proposed for each subsystem. The global robustness and convergence performance of the closed-loop reentry vehicle control system under the proposed control law are proved.
Findings
Simulation is made for a reentry vehicle through the assumption that there is external disturbance to aerodynamic moment and the aerodynamic parameters as well as the atmospheric density are perturbed. The results verify the validity and robustness of the proposed strategy.
Originality/value
The SOTVSMC attitude controller based on feedback linearization is proposed for the reentry vehicle. The advantages of the proposed SOTVSMC are twofold. First, the global second order sliding mode is established, which implies that the closed-loop system is global robust against matched parameter uncertainties and disturbances in reentry. Second, the chattering problem is significantly alleviated.
Keywords
Acknowledgements
This research was supported by National Natural Science Foundation of China under grant 61104153, Major State Basic Research Development Program under grant 2012CB720000, and Research Fund for the Doctoral Program of Higher Education of China under grant 20091101110025.
Citation
Geng, J., Sheng, Y. and Liu, X. (2013), "Second-order time-varying sliding mode control for reentry vehicle", International Journal of Intelligent Computing and Cybernetics, Vol. 6 No. 3, pp. 272-295. https://doi.org/10.1108/IJICC-02-2013-0002
Publisher
:Emerald Group Publishing Limited
Copyright © 2013, Emerald Group Publishing Limited