Special Topic of Guidance and Control Technology for Aerospace Vehicles

Time-scale decomposition based intelligent control of flexible hypersonic flight vehicle

  • XU Bin ,
  • WANG Xia
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  • School of Automation, Northwestern Polytechnical University, Xi'an 710072, China

Received date: 2020-06-08

  Revised date: 2020-07-09

  Online published: 2020-09-02

Supported by

National Natural Science Foundation of China (61933010); Natural Science Foundation of Shaanxi Province (2019 JZ-08); Aeronautical Science Foundation of China (20180753007, 201905053005); Fok Ying-Tong Education Foundation (161058)

Abstract

Considering the longitudinal dynamics of a flexible hypersonic flight vehicle, the time-scale decomposition based intelligent control is proposed. Considering the different time-scale characteristics between the rigid states and the flexible states, the singular perturbation theory is used to conduct the time-scale decomposition such that the vehicle model is transformed to the rigid slow dynamics and the flexible fast perturbation. For the rigid subsystem with dynamics uncertainty, based on the serial-parallel estimation model that can reflect the estimation performance, the prediction error is constructed and the composite learning control is designed. For the flexible subsystem, the adaptive sliding mode control is designed to stabilize the flexible states. The uniformly ultimately bounded stability of the system is proved via the Lyapunov stability analysis. The simulation test shows that the proposed method can guarantee the stable convergence of the whole system and achieve the higher tracking accuracy, the better learning performance and the faster convergence.

Cite this article

XU Bin , WANG Xia . Time-scale decomposition based intelligent control of flexible hypersonic flight vehicle[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2020 , 41(11) : 624387 -624387 . DOI: 10.7527/S1000-6893.2020.24387

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