【摘要】 针对航天器姿态跟踪控制中存在稳态误差和转动惯量摄动未知的问题,给出一种高精度自适应姿态跟踪控制策略。通过扩展姿态动力学系统结构,将姿态角积分项引入姿态控制器中,以消除稳态误差和提升姿态跟踪精度,给出扩展系统的期望轨迹设置方法。给出一种结构更为简化的多环递归跟踪控制策略,结合自适应估计设计了自适应多环递归姿态跟踪控制器。与滑模自适应控制器对比仿真,验证了方法的优越性。更多还原

【Abstract】 A high precision adaptive attitude tracking control strategy is proposed for spacecraft to solve the problem of attitude tracking control,in which,attitude tracking steady state error and unknown perturbation of inertia moment are considered. An integral of attitude tracking error is introduced to the attitude control system to drop the steady-state error,improving the attitude tracking accuracy,and an extending attitude dynamics system is obtained. The method of designing the desired trajectory for extending system is proposed. A multi-loop tracking control method is constructed,then,an adaptive multi-loop attitude tracking controller is designed for spacecraft. The simulation results show the superiority of the proposed method.更多还原