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Mathematical Problems in EngineeringVolume 2013 2013, Article ID 357685, 11 pages

Research Article

School of Electric and Automation Engineering, Tianjin University, Tianjin 300072, China

Aeronautical Automation College, Civil Aviation University of China, Tianjin 300300, China

Received 6 January 2013; Revised 8 March 2013; Accepted 9 March 2013

Academic Editor: Shihua Li

Copyright © 2013 Bailing Tian et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper describes the design of a nonlinear robust adaptive controller for a flexible hypersonic vehicle model which is nonlinear, multivariable, and unstable, and includes uncertain parameters. Firstly, a control-oriented model is derived for controller design. Then, the model analysis is conducted for this model via input-output I-O linearized technique. Secondly, the sliding mode manifold is designed based on the homogeneity theory. Then, the adaptive high order sliding mode controller is designed to achieve the tracking for hypersonic vehicle where the upper bounds of the uncertainties are not known in advance. Furthermore, the stability of the system is proved via the Lyapunov theory. Finally, the Monte-Carlo simulation results on the full-order nonlinear model with aerodynamic uncertainties are provided to demonstrate the effectiveness of the proposed control strategy.





Autor: Bailing Tian, Wenru Fan, Qun Zong, Jie Wang, and Fang Wang

Fuente: https://www.hindawi.com/



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