In this paper, the related research and analysis are made on the finite-time tracking control of hypersonic aircrafts. Two finite-time anti-saturation integral sliding mode controllers are designed with the consideration of external disturbances, coupling responses, model parameter uncertainties, and input saturation. Firstly, based on the mean value theorem, the control problem with input saturation constraints is transformed into the one without input constraints, which overcomes the assumption of the input boundedness. Secondly, two adaptive finite-time integral sliding mode controllers are designed: the first controller is finite-time stable, while the second controller is practical finite-time stable which utilizes the adaptive algorithms with low-pass filtering properties to ensure the boundedness of adaptive parameters. Finally, the digital simulation is carried out on different types of signals to further verify the validity and robustness of the proposed finite-time anti-saturation controllers.
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