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This paper investigates a problem with regard to predictive tracking control for the longitudinal dynamics of a hypersonic vehicle (HV) which is subject to external bounded disturbance. Different from conventional predictive control, a predictive controller based on sliding mode technology is adopted to reduce the online calculation for the HV system. To eliminate the negative impact caused by the unknown bounded disturbance, a disturbance observer is employed in this paper. Then, a sliding mode controller is presented to compensate the estimation errors. It is proved with the Lyapunov analysis that the predictive sliding mode controller ensures the rigorous stability of the closed-loop system. By means of the simulation results, the proposed control scheme achieving satisfactory performance for the tracking control of the HV system are demonstrated.
Inspec keywords: nonlinear control systems; Lyapunov methods; aircraft control; variable structure systems; adaptive control; stability; observers; closed loop systems; predictive control; control system synthesis
Subjects: Aerospace control; Nonlinear control systems; Multivariable control systems; Stability in control theory; Optimal control; Self-adjusting control systems; Control system analysis and synthesis methods