A novel method for hypersonic flight vehicle's maneuver flight constrained control

An air-breathing hypersonic flight vehicle requires that its elevator deflection should not be too large and that such flight states as angle of attack and angular velocity must satisfy certain constraints to meet the working conditions of scramjet engine and to reduce the state diffusion of the flight vehicle. Therefore, we proposed the above-mentioned control method based on the model predictive control principles and designed two separate controllers: a traditional linear controller that guarantees the tracking of the altitude of the hypersonic flight vehicle in the absence of constraints and a command governor, a nonlinear static device that must modify the reference signals of normal acceleration to meet the constraints imposed by actuators and flight vehicle. The simulation results show that under the interference of gust, our method can effectively fast track maneuver commands, control the altitude of the hypersonic flight vehicle and satisfy its elevator deflection and flight state constraints.