Finite-Time Super Twisting Disturbance Observer-Based Backstepping Control for Body-Flap Hypersonic Vehicle

Daiming Liu, Changwan Min, Jiashan Cui (), Fei Li, Dongzhu Feng and Pei Dai
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Daiming Liu: School of Aerospace and Technology, Xidian University, Xi’an 710071, China
Changwan Min: School of Aerospace and Technology, Xidian University, Xi’an 710071, China
Jiashan Cui: School of Aerospace and Technology, Xidian University, Xi’an 710071, China
Fei Li: China Academy of Launch Vehicles, Beijing 100076, China
Dongzhu Feng: School of Aerospace and Technology, Xidian University, Xi’an 710071, China
Pei Dai: School of Aerospace and Technology, Xidian University, Xi’an 710071, China

Mathematics, 2023, vol. 11, issue 11, 1-14

Abstract: This paper investigates the attitude control problem for underactuated body-flap hypersonic vehicles (BFHSVs) with mixed disturbances. First, the control-oriented model for BFHSV is introduced. Then, an improved finite-time super twisting disturbance observer (STDO) is designed. Finite-time convergence of estimate error and smoother inputs are achieved. Meanwhile, a parametric command method is introduced to calculate the differential of inputs which can enhance the dynamic response of the closed-loop system. Subsequently, the virtual control signal is derived by a second-order filter to avoid the differential explosion problem. The overall stability of the closed-loop system is demonstrated by applying the Lyapunov stability theory. Finally, the performance of the proposed control scheme is evaluated through extensive and comparative numerical simulations under multiple disturbances.

Keywords: body-flap hypersonic vehicle; super twisting algorithm; disturbance observer; backstepping control (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2023
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