针对大型空间飞行器的大角度姿态控制问题,考虑航天器惯量矩阵中的不确定性和外部扰动力矩,应用高阶滑模控制方法设计了姿态跟踪控制律.采用的二阶滑模控制方法改善了系统针对不确定性及外部扰动的鲁棒性,并减弱了振颤现象.针对所设计的控制器进行了仿真验证,并与一阶滑模控制进行了对比,仿真结果表明了所提出方法的有效性. Aiming at the problem of large-scale attitude control of large spacecraft, the attitude tracking control law is designed by using the high-order sliding mode control method, considering the uncertainty of the spacecraft inertia matrix and the external disturbing moment. The second-order sliding mode control method is improved The system is robust against uncertainties and external perturbations, and reduces the chattering. A simulation of the proposed controller is performed and compared with the first-order sliding mode control. The simulation results show that the proposed method Effectiveness.