Finite-Time Extended State Observer-Based Attitude Control for Hypersonic Vehicles with Angle-of-Attack Constraint

Qingli Lu, Ruisheng Sun (), Yu Lu and Xuanting Liu
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Qingli Lu: School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Ruisheng Sun: School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Yu Lu: School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Xuanting Liu: School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

Mathematics, 2024, vol. 12, issue 7, 1-21

Abstract: This paper develops and validates a modified backstepping control scheme for hypersonic vehicles (HSVs) with uncertain dynamics and angle-of-attack (AOA) constraint, which incorporates a novel finite-time extended state observer (FTESO) and a time-varying barrier Lyapunov function (BLF)-based controller. In order to ensure that observation errors converge before the controller reaches the steady states, the “adding a power integrator” (AAPI) technique is utilized to design the FTESO by transforming the observation problem of the traditional extended state observer (ESO) into a stabilization problem. Combining time-varying constraints and tracking errors to construct the BLF, the backstepping control law that can adapt to large initial tracking errors is derived. Theoretical and comparative simulation results show that the proposed FTESO performs well in terms of speed and accuracy, and AOA is constrained within the prescribed region.

Keywords: hypersonic vehicles; angle-of-attack constraint; finite-time extended state observer; barrier Lyapunov function (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2024
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