Test Mass Capture Control for Drag-Free Satellite Based on State-Dependent Riccati Equation Method

Yingjie Chen; Yankai Wang; Ti Chen; Zhengtao Wei; Javad Tayebi

doi:10.3390/act13110434

Actuators (Oct 2024)

Test Mass Capture Control for Drag-Free Satellite Based on State-Dependent Riccati Equation Method

Yingjie Chen,
Yankai Wang,
Ti Chen,
Zhengtao Wei,
Javad Tayebi

Affiliations

Yingjie Chen: State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, No. 29 Yudao Street, Nanjing 210016, China
Yankai Wang: State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, No. 29 Yudao Street, Nanjing 210016, China
Ti Chen: State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, No. 29 Yudao Street, Nanjing 210016, China
Zhengtao Wei: State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, No. 29 Yudao Street, Nanjing 210016, China
Javad Tayebi: State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, No. 29 Yudao Street, Nanjing 210016, China

DOI: https://doi.org/10.3390/act13110434
Journal volume & issue: Vol. 13, no. 11
p. 434

Abstract

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The drag-free satellite plays an important role in the space-based gravitational wave observatory. The capture control of test mass after release is a crucial technology that can affect the success of the mission. The test mass must be released to the center of the electrostatic suspension cage accurately. This paper presents a nonlinear dynamic model of drag-free satellites in Lagrange formalism. A capture control scheme for test mass release phase is proposed based on the state-dependent Riccati equation (SDRE) strategy. To deal with the actuator saturation problem, a nonlinear saturation model is introduced to the dynamics of satellite, while the SDRE strategy is applied to the non-affine system. The effectiveness of the proposed methodology is verified by the numerical simulation for the drag-free satellite.

Published in Actuators

ISSN: 2076-0825 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials; Technology: Electrical engineering. Electronics. Nuclear engineering: Production of electric energy or power. Powerplants. Central stations
Website: http://www.mdpi.com/journal/actuators

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