DocumentCode :
64016
Title :
Non-linear disturbance observer-based back-stepping control for airbreathing hypersonic vehicles with mismatched disturbances
Author :
Haibin Sun ; Shihua Li ; Jun Yang ; Lei Guo
Author_Institution :
Sch. of Autom., Southeast Univ., Nanjing, China
Volume :
8
Issue :
17
fYear :
2014
fDate :
11 20 2014
Firstpage :
1852
Lastpage :
1865
Abstract :
This study concerns with robust tracking control problem for the longitudinal model of airbreathing hypersonic vehicles (AHVs). The AHVs include serious non-linearities, strong couplings, parametric perturbations and mismatched disturbances, which results in great difficultly in the controller design. By using back-stepping method and non-linear disturbance observer technique, a novel composite controller is proposed, which can guarantee system outputs asymptotically track their reference signals. A new idea is that disturbance estimations are introduced into virtual control law in each step to compensate the mismatched disturbances. As compared with other robust flight control methods for AHVs, the developed method exhibits not only excellent robustness and disturbance rejection performance but also the property of nominal performance recovery. Finally, the effectiveness of the proposed method is demonstrated by simulation results.
Keywords :
aircraft control; control nonlinearities; nonlinear control systems; observers; robust control; AHV; airbreathing hypersonic vehicles; back-stepping control; composite controller; disturbance estimations; disturbance rejection performance; mismatched disturbances; nonlinear disturbance observer; parametric perturbations; robust flight control methods; robust tracking control; virtual control law;
fLanguage :
English
Journal_Title :
Control Theory & Applications, IET
Publisher :
iet
ISSN :
1751-8644
Type :
jour
DOI :
10.1049/iet-cta.2013.0821
Filename :
6969735
Link To Document :
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