Prescribed performance control for a hypersonic vehicle considering elastic vibration

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (7) : 241-247.

ZHAO Hewei,HU Yun’an,YANG Xiuxia,LIANG Yong

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Abstract

Aiming at the longitudinal dynamic model of an elastic hypersonic vehicle,the short period subsystem controller ws designed using prescribed performance control and the backstepping technique.The elastic modes were taken as the uncertainties of the system,the online approaching was conducted using the fully tuned dynamic neural network and the influences of estimation errors of the neural network were dealed with by introducing the robust term.The prescribed performance control was combined with the backstepping technique,the performance function and the error conversion function were introduced to convert the original ‘constrained’ system into an equivalent ‘unconstrained’ one.The fully states prescribed performance backstepping controller was designed based on Lyapunov theory,it was proved that the system is stable and all the signals are bounded according to the theoretical analysis; all error states of the longitudinal short period subsystem of the typersonic vehicle satisfy the prescribed transient state and steady state performances.The simulation results demonstrated the correctness of the proposed method.

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elasticity / hypersonic vehicle / prescribed performance / neural network

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ZHAO Hewei,HU Yun’an,YANG Xiuxia,LIANG Yong. Prescribed performance control for a hypersonic vehicle considering elastic vibration[J]. Journal of Vibration and Shock, 2017, 36(7): 241-247

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