Adaptive fault-tolerant attitude tracking control for spacecraft formation with unknown inertia
Adaptive fault-tolerant attitude tracking control for spacecraft formation with unknown inertia
复制标题
惯性未知航天器编队自适应容错姿态跟踪控制
DOI：
10.1002/acs.2822
复制
发表时间：
2018
影响因子：
3.1
通讯作者：
Guo Yu
中科院分区：
文献类型：
--
作者：
Zhu Zhihao;Guo Yu
研究了在惯性矩阵和外部干扰未知时变的情况下，基于有向通信拓扑结构的航天器编队自适应容错姿态协调跟踪问题.在没有故障和惯性先验知识的情况下，提出了一种自适应方法来抑制干扰和不确定性的影响。同时，结合一致性算法和图论，设计了一种自适应容错姿态同步跟踪控制律，将姿态调节到一个公共的时变参考状态。为了优化控制律，引入了一个动态调整函数，根据姿态跟踪误差来调整控制增益。仿真结果证明了所提出的控制方法的有效性。
In this paper, an adaptive fault‐tolerant attitude coordinated tracking problem for spacecraft formation is investigated under a directed communication topology containing a spanning tree with the leader as the root, where inertia matrices and external disturbances are unknown time‐varying. With no prior knowledge of faults and inertia, an adaptive approach is proposed to reject the influence of disturbances and uncertainties. Meanwhile, combining with a consensus algorithm and graph theory, an adaptive fault‐tolerant attitude synchronization tracking control law is presented to regulate the attitude to a common time‐varying reference state. Aiming at optimizing the control law, a dynamic adjustment function is introduced to adjust the control gain according to the attitude tracking error. The effectiveness of the proposed control approach is demonstrated through simulation results.