|Table of Contents|

Sloshing mode observer and sliding mode attitude controlfor liquid-filled flexible spacecraft(PDF)

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2019年05期
Page:
640-646
Research Field:
Publishing date:

Info

Title:
Sloshing mode observer and sliding mode attitude controlfor liquid-filled flexible spacecraft
Author(s):
Yu Wenjie1Zhu Zhihao1Zhong Chenxing2Wang Lu1Guo Yu1
1.School of Automation,Nanjing University of Science and Technology,Nanjing 210094,China; 2.The 29th Research Institute,China Electronics Technology Group Corporation,Chengdu 610036,China
Keywords:
liquid-filled flexible spacecrafts sliding mode variable strncture attitude control observers
PACS:
TP273
DOI:
10.14177/j.cnki.32-1397n.2019.43.05.014
Abstract:
Aiming at solving the problems of appendages’ vibration and liquid sloshing during attitude maneuvering of the liquid-filled flexible spacecraft,a sliding mode variable structure control method with steady-state liquid slosh compensation is proposed here. Based on the Lyapunov theory,an improved variable structure attitude control law is designed. To reduce the chattering,the symbol function is replaced by the square root function. Considering the small sloshing frequency and damping ratio of the liquid,in order to improve the performance of attitude stabilization control,a liquid sloshing mode observer is designed to reduce the influence of liquid sloshing in the steady state process. The simulation results show that the proposed control method can effectively improve the steady-state pointing accuracy and the stability of the attitude of the liquid-filled flexible spacecraft.

References:

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Last Update: 2019-11-30