Robust adaptive control of hypersonic flight vehicle with asymmetric AOA constraint
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. RESEARCH PAPER .
November 2020, Vol. 63 212203:1–212203:13 https://doi.org/10.1007/s11432-019-2682-y
Robust adaptive control of hypersonic flight vehicle with asymmetric AOA constraint Yuyan GUO1 , Bin XU1* , Weixin HAN1 , Shuai LI2 , Yueping WANG3 & Yu ZHANG4 1 School of Automation, Northwestern Polytechnical University, Xi’an 710000, China; Department of Computing, The Hong Kong Polytechnic University, Hong Kong 999077, China; 3 Flight Automatic Control Research Institute, Xi’an 710000, China; 4 State Key Laboratory of Industrial Control Technology, College of Control Science and Engineering, Zhejiang University, Hangzhou 310027, China 2
Received 2 June 2019/Revised 6 August 2019/Accepted 27 September 2019/Published online 18 August 2020
Abstract This paper investigates the state-constrained controller design of a hypersonic flight vehicle (HFV) based on an asymmetric barrier Lyapunov function (ABLF). The robust adaptive back-stepping controller with integral terms is applied for the HFV longitudinal dynamics. Considering the asymmetric angle of attack (AOA) constraint caused by the unique structure and scramjet, the controller is modified by constructing an ABLF, where the asymmetric constraint on AOA tracking error is introduced. Combined with the constraint on virtual control, the AOA is restricted to a predefined asymmetric interval. The system stability and the AOA constraint are guaranteed via Lyapunov analysis. Simulation results verify that the AOA can be kept in the given asymmetric interval while the altitude reference signal is tracked. Keywords hypersonic flight vehicle, HFV, integral back-stepping control, adaptive control, asymmetric barrier Lyapunov function, ABLF, angle of attack (AOA) constraint Citation Guo Y Y, Xu B, Han W X, et al. Robust adaptive control of hypersonic flight vehicle with asymmetric AOA constraint. Sci China Inf Sci, 2020, 63(11): 212203, https://doi.org/10.1007/s11432-019-2682-y
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Introduction
Hypersonic flight vehicles (HFVs) have received extensive attention of many countries owing to the potential in fast transportation and “prompt global strike”. To ensure the accuracy of tracking the given trajectory or striking a target, flight control systems play an important role in HFV techniques. Considering the specific characteristics including model nonlinearity and uncertainty, some representative control approaches such as output-feedback control [1], linear parameter varying control [2], sliding mode control [3–5], and fuzzy control [6] have been applied to hypersonic dynamics. The comprehensive review on HFV control can be found in [7]. In HFV controller design, back-stepping technique has been utilized to the longitudinal dynamics since the cascade dynamics can be transferred to several one-order subsystems [7,8]. Combined with intelligent and adaptive techniques, back-stepping has been developed against the model uncertainty [9, 10] and the actuator nonlinearity [11,12] of HFV and other nonlinear systems [13]. Considering different task requirements, some advanced
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