欠驱动刚性航天器旋转轴稳定研究

Spin-Axis Stabilization of Underactuated Rigid Spacecraft

研究欠驱动刚性航天器受到干扰力矩作用时的旋转轴指向稳定控制问题。首先采用(w,z)姿态参数建立欠驱动刚性航天器的运动学方程,然后引入干扰模型,采用退步法和内模原理设计了一种新的控制律,并结合Lyapunov直接法和Barbalat引理证明了该控制律的全局渐近稳定性。理论分析和仿真结果都表明新的控制律能够实现旋转轴指向全局渐近稳定。

This paper mainly deals with the spin-axis stabilization of underactuated spacecraft in the presence of sinusoidal disturbance.By using(w,z) parameter describing the kinematical equations of the rigid spacecraft,the paper studies the spin-axis stabilization of the underactuated rigid spacecraft under sinusoidal disturbance and derives a new control law based on the backstepping method with the internal modal principle applied to eliminate the disturbance.The paper also proves that the closed-loop system is ...