Super Twisting Disturbance Observer-Based Fixed-Time Sliding Mode Backstepping Control for Air-Breathing Hypersonic Vehicle

This paper investigates the velocity and altitude tracking control problem for air-breathing hypersonic vehicle (AHV) under external disturbances and uncertainties. An improved smooth super-twisting based disturbance observer (SSTDOB) is proposed to estimate the unknown external disturbances. With t...

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Bibliographic Details
Published inIEEE access Vol. 8; pp. 17567 - 17583
Main Authors Wu, Yunjie, Ma, Fei, Liu, Xiaocen, Hua, Yueyang, Liu, Xiaodong, Li, Guofei
Format Journal Article
LanguageEnglish
Published Piscataway IEEE 2020
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Aerodynamics
Air-breathing hypersonic vehicle
Backstepping
backstepping control
Control stability
disturbance observer
Disturbance observers
Feedback control
fixed-time sliding mode control
Hypersonic vehicles
Sliding mode control
Stability analysis
super twisting algorithm
Tracking control
Tracking errors
Twisting
Uncertainty
Vehicle dynamics
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Summary:This paper investigates the velocity and altitude tracking control problem for air-breathing hypersonic vehicle (AHV) under external disturbances and uncertainties. An improved smooth super-twisting based disturbance observer (SSTDOB) is proposed to estimate the unknown external disturbances. With the assistance of SSTDOB, an effective fixed-time sliding mode backstepping control (FSMBC) is designed to guarantee the tracking errors converge to a small neighbor of the origin. Meanwhile, a fixed-time tracking differentiator (FTD) is employed to estimate the virtual control inputs, which can eliminate the differential explosion problem. The overall stability of the closed-loop system is analyzed by utilizing Lyapunov stability theory. Simulation results demonstrate the effectiveness of the composite method.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2020.2968396