### Attitude Control of Spherical Liquid-Filled Spacecraft Based on High-Order Fully Actuated System Approaches

XIAO Fuzheng, CHEN Liqun

1. School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
• Received:2022-01-18 Published:2022-04-13
• Contact: CHEN Liqun. Email: chenliqun@hit.edu.cn
• Supported by:
This research was supported by the National Natural Science Foundation of China under Grant Nos. 62188101 and 12132002.

XIAO Fuzheng, CHEN Liqun. Attitude Control of Spherical Liquid-Filled Spacecraft Based on High-Order Fully Actuated System Approaches[J]. Journal of Systems Science and Complexity, 2022, 35(2): 471-480.

The attitude of spherical liquid-filled spacecraft is controlled based on the high-order fully actuated system approaches. The rigid-fluid coupling dynamic equation can be established in terms of the Euler angles of the spacecraft and the angular velocities of the liquid fuel. According to the dynamic equation, three kinds of input selections are presented. In the case of one control input, the dynamic equation is transformed into the third-order or the second-order differential equations of the Euler angle by the high-order fully actuated system approaches. Then a control law is designed to track the target. The effectiveness of the control law is demonstrated by numerical simulations.
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