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Finite-time control for multiple model liquid-filled flexible spacecraft


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Finite-time control for multiple model liquid-filled flexible spacecraft
Zhu ZhihaoGuo YuChen Qingwei
School of Automation,Nanjing University of Science and Technology,Nanjing 210094,China
multiple model liquid-filled flexible spacecrafts finite-time control path planning input shapers
In this paper,the problem of attitude large angle maneuver completed in finite-time for the multiple liquid-filled flexible spacecraft is investigated,and a finite-time control algorithm is proposed. Aiming at reducing the flexible appendages'vibration and liquid sloshing during attitude maneuvering of the spacecraft,a sinusoidal angular jerk-based seven segment curve path is designed to smooth the desired attitude and avoid the violent vibration and sloshing resulted by step signal. To further rejecting the residual vibration and sloshing,the input shaper is utilized to modulate the smooth path. Finally,the effectiveness of the proposed finite-time control approach is illustrated by the simulation results.


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Last Update: 2020-04-20