Active disturbance rejection control of air-breathing hypersonic vehicles based on backstepping method

This paper studies active disturbance rejection control (ADRC) for the longitudinal dynamics of an air-breathing hypersonic vehicle. To track the altitude and velocity reference commands, altitude subsystem and velocity subsystem are designed independently based on backstepping method. An active disturbance rejection controller is designed by each step. The internal and external disturbances can be estimated by extended state observer (ESO) accurately and compensated in real time. The p article swarm optimization (PSO) is used to optimize parameters of active disturbance rejection controller to enhance control performance according to the fitness function. Simulation results show the effectiveness of the control scheme. The controller is robust to system uncertainties and has a good external disturbances rejection ability.