Distributed Attitude Synchronization for Spacecraft Formation Flying via Event-Triggered Control

被引:5
|
作者
Xie, Xiong [1 ]
Sheng, Tao [1 ]
He, Liang [1 ]
机构
[1] Natl Univ Def Technol, Coll Aerosp Sci & Engn, Changsha 410073, Peoples R China
来源
APPLIED SCIENCES-BASEL | 2021年 / 11卷 / 14期
基金
国家自然科学基金重大项目;
关键词
spacecraft formation flying; event-triggered strategy; attitude control; distributed control; COORDINATION CONTROL; MULTIAGENT SYSTEMS; CONSENSUS;
D O I
10.3390/app11146299
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The distributed attitude synchronization control problem for spacecraft formation flying subject to limited energy and computational resources is addressed based on event-triggered mechanism. Firstly, a distributed event-driven controller is designed to achieve attitude coordination with the limitation of energy and computing resources. Under the proposed control strategy, the controller is only updated at the event triggering instants, which effectively reduces the update frequency. Subsequently, an event-triggered strategy is developed to further decrease energy consumption and the amount of computation. The proposed event-triggered function only requires the latest state information about its neighbors, implying that the trigger threshold does not need to be calculated continuously. It is shown that the triggering interval between two successive events is strictly positive, showing that the control system has no Zeno phenomenon. Moreover, the update frequency of the proposed controller can be reduced by more than 90% compared to the update frequency of the corresponding time-driven controller with an update frequency of 10 Hz by choosing appropriate control parameters and the control system can still achieve high-precision convergence. Finally, the effectiveness of the constructed control scheme is verified by numerical simulations.
引用
收藏
页数:19
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