空间站姿态控制的一种新算法

New algorithm to attitude control for the space station

以四元数作为定位参数对空间站进行姿态控制。首先给出了以四元数表示的系统动力学模型 ;其次提出了非线性三轴姿态控制方法 ,该方法是以四元数作为反馈量 ,控制力矩陀螺作为执行元件 ,利用李亚普诺夫函数对非线性系统进行控制 ,为大型航天器的姿态控制开辟了新的途径 ;最后以一空间站为例进行了姿态控制仿真计算 ,从而说明以四元数为定位参数的空间站姿态控制方法具有计算速度快、计算精度高等优点。

In this paper, the quaternion is taken for positional parameters to control attitude of the space station. The first, the system dynamic model, which is expressed in quaternion, is given. The second, the method of non liner three axis attitude control is presented, which use quaternion as feedback, control moment gyros as a primary actuating device and introduce Lyapunov functions to control the non linear system. It is a new methodology for large spacecraft attitude control. Finally, a space station is taken as an example, the attitude control simulation is calculated. Comparing with Euler's method, the method issued in this paper is much faster and higher precision.