自适应RBF Terminal在精密实时跟踪控制中的应用研究

进行空间对接、空间光通信以及空间对抗等,需要在卫星间实现精确的捕获跟踪瞄准(Acquisition,Tracking,Pointing,ATP)。提出了用自适应RBF变结构控制方法实现捕获跟踪瞄准系统中跟踪子系统的精密实时跟踪控制,以提高系统的性能。首先由Terminal滑模变结构控制器实现快速稳定的跟踪,然后,通过自适应RBF神经网络对系统中不确定干扰的上界进行估计。并且用李亚普诺夫方法证明了系统的稳定性和对参数变化的鲁棒性。最后,仿真结果证明了方法的有效性。

Adaptive RBF Terminal Sliding Mode Applied in the Precision Real Time Tracking and Control System

It was necessary to keep precise pointing and tracking between two satellites to realize Rendezvous and Docking,laser communication as well as counterwork.An adaptive RBF terminal sliding mode control was proposed in the coarse tracking subsystem of the Acquisition,Tracking and Pointing (ATP) system.ATerminal sliding mode controller was usedto obtain a stable and fast tracking first,then the upper bound of system uncertainties were estimated through an adaptive RBF neural network.The system was proved to be stable and the parameters are provedto be bounded under the control scheme of this paper,using Lyapunov methodology.At last,simulation results show the highly robust and efficient controller design.