利用反作用飞轮阵实现飞行器大角度姿态机动的非线性快速控制

本文首先给出了采用姿态角速度和四元数矢量部分表示的姿态动力学模型。然后,构造了一个可逆的全局非线性坐标变换,使得非线性姿态动力学模型与一个具有可控标准形的线性系统等价。进一步的设计了反作用飞轮电机力矩的快速控制规律。给出了机动时间和系统状态的简单计算公式。最后,文中还介绍了数字仿真实例和结果。

NONLINEAR TIME OPTIMAL CONTROL OF SPACECRAFT LARGE-ANGLE ATTITUDE MANEUVERS WITH REACTION WHEELS

In this paper, the nonlinear attitude dynamic model is obtained, the dynamic equation is represented by using the angular velocity and the vector of Euler quaternion. Then, a global linearizing coordinates transformed into an equivalent controllable linear system. The time-optimal control law for motor torques of reaction wheels is designed, and, the calculated formulations of maneuver time and system state are given. Finally, the illustration of digital simulation is shown.