Incremental Twisting Fault Tolerant Control for Hypersonic Vehicles With Partial Model Knowledge

A passive fault tolerant control scheme is proposed for the full reentry trajectory tracking of a hypersonic vehicle in presence modeling uncertainties, external disturbances, and actuator faults. To achieve this goal, attitude error dynamics with relative degree two formulated first by ignoring nonlinearities induced translational motions. Then, multivariable twisting controller developed as benchmark to ensure precise task. Theoretical analysis Lyapunov method proves that its first-order derivative can simultaneously converge origin exponentially. depend less on model knowledge reduce system an incremental derived based nonlinear dynamic inversion predesigned controller. In article, it shown not only benefits both are inherited, but also their side effects reduced. Notably, user friendly fixed gains partial required. Numerical simulations various cases comparison studies conducted verify effectiveness method.