Attitude Synchronization and Stabilization for Multi-Satellite Formation Flying with Advanced Angular Velocity Observers

IF 0.7 Q3 COMPUTER SCIENCE, THEORY & METHODS
B. Kada, K. Munawar, M. S. Shaikh
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引用次数: 0

Abstract

—This paper focuses on two aspects of satellite formation flying (SFF) control: finite-time attitude synchronization and stabilization under undirected time-varying communication topology and synchronization without angular velocity measurements. First, a distributed nonlinear control law ensures rapid convergence and robust disturbance attenuation. To prove stability, a Lyapunov function involving an integrator term is utilized. Specifically, attitude synchronization and stabilization conditions are derived using graph theory, local finite-time convergence for homogeneous systems, and LaSalle's non-smooth invariance principle. Second, the requirements for angular velocity measurements are loosened using a distributed high-order sliding mode estimator. Despite the failure of inter-satellite communication links, the homogeneous sliding mode observer precisely estimates the relative angular velocity and provides smooth control to prevent the actuators of the satellites from chattering. Simulations numerically demonstrate the efficacy of the proposed design scheme.
基于先进角速度观测器的多卫星编队飞行姿态同步与稳定
重点研究了卫星编队飞行(SFF)控制的两个方面:无向时变通信拓扑下的有限时间姿态同步与稳定以及无角速度测量的同步。首先,分布式非线性控制律保证了快速收敛和鲁棒干扰衰减。为了证明稳定性,利用了一个包含积分项的李雅普诺夫函数。具体地说,利用图论、齐次系统的局部有限时间收敛和LaSalle的非光滑不变性原理推导了姿态同步和稳定条件。其次,利用分布式高阶滑模估计器放宽了对角速度测量的要求。在卫星间通信链路失效的情况下,均质滑模观测器能精确估计相对角速度,并提供平滑控制以防止卫星作动器的抖振。数值仿真验证了所提设计方案的有效性。
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来源期刊
CiteScore
2.30
自引率
22.20%
发文量
519
期刊介绍: IJACSA is a scholarly computer science journal representing the best in research. Its mission is to provide an outlet for quality research to be publicised and published to a global audience. The journal aims to publish papers selected through rigorous double-blind peer review to ensure originality, timeliness, relevance, and readability. In sync with the Journal''s vision "to be a respected publication that publishes peer reviewed research articles, as well as review and survey papers contributed by International community of Authors", we have drawn reviewers and editors from Institutions and Universities across the globe. A double blind peer review process is conducted to ensure that we retain high standards. At IJACSA, we stand strong because we know that global challenges make way for new innovations, new ways and new talent. International Journal of Advanced Computer Science and Applications publishes carefully refereed research, review and survey papers which offer a significant contribution to the computer science literature, and which are of interest to a wide audience. Coverage extends to all main-stream branches of computer science and related applications
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