论文标题
规定的时间滑动模式控制，用于跟踪航天器的态度
The prescribed time sliding mode control for attitude tracking of spacecraft
论文作者
论文摘要
随着太空任务的发展，规定时间融合的需求有广泛的任务。但是，由于规定的时间方法的无限增益，在接近规定的时间和两个滑动模式控制的时期时，将规定的时间方法与滑动模式控制结合在一起仍然是一项艰巨的工作。在本文中，为具有匹配干扰的通用系统（从二阶系统到高阶系统）提出了一种新规定的时间滑动模式控制方法。具有显式时间术语的新型滑动模式变量旨在实现规定的时间收敛。更重要的是，随着时间的流逝，可以避免控制输入的奇异性。最后，本文提出了一种基于干扰观察者的规定时间滑动模式控制方法，用于跟踪航天器的态度跟踪，并且通过数值模拟验证了该方法的效率。
With the development of the space missions, there are extensive missions in the demand of the prescribed time convergence. However, it is still a difficult work to combine the prescribed time method with the sliding mode control due to the infinite gain of the prescribed time method while approaching the prescribed time and two periods of sliding mode control. In this paper, a new prescribed time sliding mode control method is proposed for general systems with matched disturbances, from the second-order system to the high-order system. A novel sliding mode variable with explicit time term is designed for achieving the prescribed time convergence. More importantly, as time approaches the prescribed time, the singularity of control input can be avoided. Finally, this paper presents a disturbance observer based prescribed time sliding mode control method for attitude tracking of spacecraft and the efficiency of this method has been verified through the numerical simulations.
