Shape control of spacecraft formation using a virtual spring-damper mesh
Shape control of spacecraft formation using a virtual spring-damper mesh
复制标题
使用虚拟弹簧阻尼器网格对航天器编队进行形状控制
DOI:
10.1016/j.cja.2016.09.009
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发表时间:
2016-12
影响因子:
5.7
通讯作者:
Xing Jianjun
中科院分区:
文献类型:
--
作者:
Qifeng Chen;Meng Yunhe;Xing Jianjun
This paper derives a distance-based formation control method to maintain the desired formation shape for spacecraft in a gravitational potential field. The method is an analogy of a virtual spring-damper mesh. Spacecraft are connected virtually by spring-damper pairs. Convergence analysis is performed using the energy method. Approximate expressions for the distance errors and control accelerations at steady state are derived by using algebraic graph representations and results of graph rigidity. Analytical results indicate that if the underlying graph of the mesh is rigid, the convergence to a static shape is assured, and higher formation control precision can be achieved by increasing the elastic coefficient without increasing the control accelerations. A numerical example of spacecraft formation in low Earth orbit confirms the theoretical analysis and shows that the desired formation shape can be well achieved using the presented method, whereas the orientation of the formation can be kept pointing to the center of the Earth by the gravity gradient. The method is decentralized, and uses only relative measurement information. Constructing a distributed virtual structure in space can be the general application area. The proposed method can serve as an active shape control law for the spacecraft formations using propellantless internal forces.
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影响因子:
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Journal of Guidance, Control and Dynamics
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期刊:
Commun. Inf. Syst.
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