针对高超声速飞行器控制系统纵向平面轨迹跟踪问题,提出了一种基于干扰观测器的终端(Terminal)滑模控制器设计方法。将结构的弹性振动视为刚体动力学系统中的不确定因素,采用Terminal滑模控制方法设计速度和高度控制器。为增强控制器的鲁棒性,设计了一种非线性干扰观测器对模型不确定项进行自适应估计和补偿。仿真实验表明,该控制器对模型不确定性和气动弹性影响具有鲁棒性,能够实现对速度和高度参考输入的稳定跟踪。 Aiming at the problem of longitudinal planar trajectory tracking in hypersonic vehicle control system, a terminal sliding mode controller design method based on disturbance observer is proposed. The structure of the elastic vibration as rigid body dynamics in the system uncertainty, Terminal sliding mode control method using speed and height controller. In order to enhance the robustness of the controller, a nonlinear disturbance observer is designed to estimate and compensate the uncertainties of the model adaptively. Simulation results show that the controller is robust to model uncertainty and aeroelasticity, and it can achieve stable tracking of velocity and altitude reference inputs.