SCIENTIA SINICA Informationis, Volume 49 , Issue 5 : 585-598(2019) https://doi.org/10.1360/N112018-00342

Robust tracking control of variable swept-wing near space vehicle based on disturbance observers

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  • ReceivedDec 30, 2018
  • AcceptedMar 10, 2019
  • PublishedMay 8, 2019


In this study, we establish a nonlinear multi-model switching system for variable swept-wing aircraft based on the characteristics of multiple working modes and the large flight envelope. The tracking control of the flight altitude and speed during backswept varying process is studied. To reduce the uncertainty and external unknown disturbance in the attitude system, a nonlinear disturbance observer is proposed to estimate the complex disturbance. Moreover, a sliding mode attitude controller is designed to maintain a good attitude tracking performance. The average dwell time method is employed to prove that the designed controller offers switching system stability. Finally, simulation results are presented to confirm the effectiveness of the proposed method.

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