期刊
ISA TRANSACTIONS
卷 96, 期 -, 页码 163-176出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.isatra.2019.06.011
关键词
Hypersonic flight vehicle; Barrier Lyapunov function; Finite-time convergence; Flight state constraint; Adaptive backstepping
资金
- National Natural Science Foundation of China [61833016, 61873295]
This paper investigates the finite-time tracking control problem of the hypersonic flight vehicle (HFV) with state constraints. Firstly, a control-oriented model is introduced to enable the application of adaptive backstepping scheme. To meet strict requirements in terms of working conditions of HFV, barrier Lyapunov function is adopted to constrain the tracking errors, while piecewise saturation function is constructed to restrict the virtual signals. To guarantee the finite-time convergent property of HFV dynamics, an adaptive scheme in accordance with finite-time stability theory is designed. Meanwhile, a sliding mode differentiator is employed to estimate the derivatives of the virtual control laws. Novel auxiliary systems are then designed to consider the side effects of the possible saturation and to maintain the finite-time convergent property. In the final stage, the effectiveness and performance of the proposed method is demonstrated by numerical simulations. (C) 2019 ISA. Published by Elsevier Ltd. All rights reserved.
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