Adaptive Control for Test Mass Capture and Drag-Free Mode in Drag-Free Satellite

In space-borne gravitational wave detection missions, drag-free satellites are essential for achieving high-precision interferometric measurements. This paper aims to develop nonlinear control schemes for test mass capture and drag-free mode to achieve stringent ultra-quiet-stable requirements. The...

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Bibliographic Details
Published inIEEE transactions on aerospace and electronic systems pp. 1 - 16
Main Authors Wang, Yankai, Chen, Yingjie, Chen, Ti, Wei, Zhengtao, Tayebi, Javad
Format Journal Article
LanguageEnglish
Published IEEE 2025
Subjects
Actuators
Adaptation models
Adaptive control
Aerodynamics
Drag-free control
Drag-free satellite
Gravitational waves
Laser beams
Mathematical models
Nonlinear control
Nonlinear dynamical systems
Satellites
Space vehicles
Test mass capture
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Summary:In space-borne gravitational wave detection missions, drag-free satellites are essential for achieving high-precision interferometric measurements. This paper aims to develop nonlinear control schemes for test mass capture and drag-free mode to achieve stringent ultra-quiet-stable requirements. The nonlinear dynamics model is reformulated within the Lagrangian framework, without relying on the skew-symmetric property. An adaptive controller is proposed for capture phase, addressing uncertain parameters in the actuator matrix. The proposed controller directly compensates for uncertain parameters in the nonlinear system without skew-symmetric property. Based on two sliding surfaces defined for the sensitive and insensitive axis, an adaptive controller is designed for drag-free mode subject to uncertain parameters and time-varying disturbances. Finally, numerical simulations are conducted to verify the effectiveness of the proposed controllers.
ISSN:0018-9251
1557-9603
DOI:10.1109/TAES.2025.3575552