基于加速度测量的高超声速飞行器抗干扰控制

An anti-disturbance backstepping control scheme based on acceleration measurement is proposed for the complexity and uncertainty of the aerodynamic characteristics of air-breathing hypersonic vehicle(AHV). The control scheme includes both internal and external loop designs. The external loop introduces the measured acceleration signals of sensor in the backstepping method. And a nonlinear disturbance observer is designed to observe and compensate the composite disturbance. The dynamic inversion method based on singular perturbation theory is used for the internal loop design. The Lyapunov theory is used to prove the uniformly ultimately bounded stabilization. In this scheme, the control signal is totally constituted by signals which can be directly measured by sensors. The controller has high robustness for the uncertainty of aerodynamic parameters. Moreover, the anti-disturbance capacity is improved by the disturbance observer. The simulated results demonstrate that the control scheme can obtain desired control performance considering high uncertainty and external disturbance.