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针对卫星姿态机动控制问题,提出一种只利用向量测量信息的无角速度反馈的输出反馈控制方法。卫星姿态的指向直接通过旋转矩阵进行描述,而不是先进行参数化过程,避免了由欧拉角、修正的罗德里格参数(MRPs)与四元数等姿态描述方式产生的奇异问题与退绕问题。首先,通过向量测量信息与一组期望姿态向量,引入一个新的姿态指向误差向量,并对其性质进行分析。其次,进一步结合主导滤波器的思想,设计了无需角速度信息的卫星姿态机动控制器,并应用Lyapunov理论,对闭环系统的全局稳定性进行了严格的证明。最后,对所提出的控制算法进行了数值仿真,其结果验证了所设计的输出反馈控制算法的可行性和有效性。
Aiming at the problem of satellite attitude maneuver control, an output feedback control method of angular velocity feedback using only vector measurement information is proposed. The orientation of the satellite attitude is described directly by the rotation matrix rather than the parameterization process first, avoiding the singularities and unwinding problems caused by Euler angles, modified Rodrigues parameters (MRPs) and quaternions, problem. First, a new attitude-pointing error vector is introduced through vector measurement information and a set of expected pose vectors, and their properties are analyzed. Secondly, combined with the idea of dominant filter, a satellite attitude maneuver controller without angular velocity information is designed. Lyapunov theory is applied to verify the global stability of the closed-loop system. Finally, the proposed control algorithm is numerically simulated. The results verify the feasibility and effectiveness of the proposed output feedback control algorithm.