Journal
ISA TRANSACTIONS
Volume 88, Issue -, Pages 62-72Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.isatra.2018.11.049
Keywords
Non-contact satellite; Drag-free and attitude control; Non-contact Lorentz actuator; EKF-based estimation; Minimum norm allocation
Categories
Funding
- key program of Chinese science and technology ministry [2016YFB0500801]
- talents program of Shanghai science and Technology Commission, China [16QB1403500, 16XD1423200]
- natural science foundation of China [41504034]
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A novel non-contact satellite for drag-free and attitude control is proposed in this paper. The non-contact satellite is separated into a payload module and a service module by non-contact Lorentz actuators. Instead of thrusters, the non-contact Lorentz actuators are used to exerted precise forces and torques, enabling drag-free and attitude control of the payload module, while the service module is designed to track the payload module to avoid collision. On the basis of this new design, the dynamics of drag-free and attitude control can be precisely modeled. Accordingly, a hierarchical control algorithm, consisting of an EKF-based estimation and rejection of environmental acceleration of payload module, attitude control of payload module, minimum norm allocation of non-contact Lorentz actuators, as well as collaborative control of service module, is systematically designed. A numerical simulation is then conducted to demonstrate the validity and effectiveness of the proposed design. (C) 2018 ISA. Published by Elsevier Ltd. All rights reserved.
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