航天器姿态大角度机动有限时间控制

针对航天器姿态大角度机动控制问题，在存在外部扰动的情况下，基于航天器姿态跟踪系统的标准级联特性，利用反步法和自适应控制设计有限时间控制器。提出的控制方法可以严格保证姿态大角度机动系统是全局有限时间稳定的。李雅普诺夫理论推导和仿真结果表明，系统在控制器的作用下可以快速机动到平衡点并保持稳定，全物理仿真试验进一步表明了所提出的控制方法的有效性和优越性。

Finite Time Control for Spacecraft Attitude Large Angle Maneuver

For attitude large-angle maneuver control of spacecraft, according to the standard cascading characteristic of the spacecraft attitude tracking system, a finite-time controller is designed by using the backstepping method and the adaptive control under the condition of external disturbances existing. The proposed controller can strictly guarantee that the attitude large-angle maneuver system is finite-time stable globally. The Lyapunov theory and simulation results show that the system can quickly maneuver to the equilibrium point and hold steady. The full-physical simulation experiments also demonstrate the effectiveness and superiority of the proposed control scheme.