Nonlinear modeling and validation of spacecraft dynamics for space-based gravitational wave detector

被引：3

作者：

Zhang, Dexuan ^{[1
]}

Ye, Xiaorong ^{[1
]}

Li, Hongyin ^{[1
]}

Zhao, Guoying ^{[1
]}

Lian, Junxiang ^{[1
]}

机构：

[1] Sun Yat Sen Univ, TianQin Res Ctr Gravitat Phys, MOE Key Lab TianQin Mission, Zhuhai Campus, Zhuhai 519082, Peoples R China

来源：

ACTA ASTRONAUTICA | 2024年 / 224卷

关键词：

Space-based gravitational wave detector; Drag-free; Spacecraft; Dynamics; Multibody; Modeling;

D O I：

10.1016/j.actaastro.2024.07.047

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

The development of the Drag-Free and Attitude Control System is crucial for space-based gravitational wave detectors. The Drag-Free and Attitude Control System includes for spacecraft attitude control, drag-free control, moving optical subassemblies pointing control, and test masses electrostatic control during multiple phases of the mission lifetime. An accurate model of the spacecraft dynamics model is not only a precondition for the control design of Drag-Free and Attitude Control System, but also can serve as a valuable reference to assess the noise budget of gravitational wave detectors. This paper presents a generic, nonlinear mathematical model that describes the multi-body dynamics for the gravitational wave detectors. The model fully considers the couplings between the bodies involved, with a particular focus on the impact of the moving optical subassemblies on the spacecraft attitude. Additionally, a corresponding reduced model for the control design of the science mode is divided. Both models are validated numerically by Monte Carlo simulations and motion analysis, respectively.

引用

页码：57 / 68

页数：12

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