A novel tracking control method for a flexible air-breathing hypersonic vehicle

This paper is focused on developing a non-fragile state feedback tracking control for a flexible air-breathing hypersonic vehicle under the condition that the elastic modal is not measured. First, the linear model of the FAHV is obtained under given trim condition by using Jacobian linearization. Second, through treating flexibility as the input disturbance, the non-fragile state feedback controller has been designed to stabilize the closed-loop systems and reduce the fragility encountered in controller implementation. Linear matrix inequalities constraints are formulated for designing a velocity and altitude tracking controller. Finally, numerical simulations have demonstrated the effectiveness of the proposed approach.