This article addresses the tracking control problem of a hypersonic vehicle subject to multisource uncertainty and actuator fault. A composite fixed time control scheme is designed to achieve the stable tracking of velocity and altitude in fixed time. A nonsingular fast terminal sliding mode controller and a practically fixed-time backstepping controller are, respectively, developed for velocity subsystem and altitude subsystem. Fixed-time disturbance observer is used to tackle lumped uncertainties and a new fast fixed time filter is constructed to avoid the “explosion of terms” problem. Then, the fixed-time stability of velocity tracking error and the practically fixed-time stability of altitude tracking error are proved. Finally, compared simulations are carried out to present the efficiency of the designed control scheme.
Composite Practically Fixed Time Controller Design for a Hypersonic Vehicle With Multisource Uncertainty and Actuator Fault
IEEE Transactions on Aerospace and Electronic Systems ; 57 , 6 ; 4375-4389
2021-12-01
2267372 byte
Article (Journal)
Electronic Resource
English
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