Control separation based fault accommodation for flexible hypersonic vehicles

Dong Zhao, Bin Jiang, Hao Yang and Gang Tao

International Journal of Systems Science, 2021, vol. 52, issue 10, 2020-2033

Abstract: This paper addresses a fault accommodation issue for flexible hypersonic vehicles by the static output feedback. Firstly, a longitudinal dynamics for hypersonic vehicles is established in the ODE-beam cascade form and the distributed fault model is built. Next, a novel fault accommodation scheme is developed to achieve fault accommodation and vibration suppression. Such a control strategy is based on the control separation formulation: one component is for accommodating the distributed fault, another one is for the closed-loop stability. The input-to-state stability of the closed-loop system is analysed by using the direct Lyapunov method and bilinear matrix inequalities technique. Then, a new algorithm is provided to obtain the control gain matrices of the fault-tolerant control law. Finally, the simulation results are given to illustrate the effectiveness of the theoretical results.

Date: 2021
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DOI: 10.1080/00207721.2021.1876274

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