Journal of Astronautics ›› 2020, Vol. 41 ›› Issue (1): 19-26.doi: 10.3873/j.issn.1000-1328.2020.01.003

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Dynamics Modeling and Attitude Control of Spacecraft with Multiple Propellant Tanks

LIU Feng, YUE Bao zeng, TANG Yong   

  1. School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China
  • Received:2018-11-08 Revised:2019-04-23 Online:2020-01-15 Published:2020-01-25

Abstract: This paper is focused on the accurate dynamics modeling of a multi-tank spacecraft through the Lagrangian approach. The sloshing liquid in the tanks is represented by a constraint surface model for liquid sloshing. The equivalent slosh forces and torques acted on the spacecraft hub, when the spacecraft is excited by a set of arbitrary complex excitations in zero-g environment, are compared with the Flow3D results, and the results show good agreements. Based on the derived mathematical model, a kind of compensation controller is developed for jitter-suppressing in attitude motion of this liquid-filled spacecraft, when the spacecraft executes three-axial-stabilized attitude maneuvers.

Key words: Constraint surface model for liquid sloshing, Large amplitude liquid slosh, Multi-tank spacecraft, Three-axis-stabilized attitude maneuver, Compensation control

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