Micro-Thrust, Low-Fuel Consumption, and High-Precision East/West Station Keeping Control for GEO Satellites Based on Synovial Variable Structure Control

Fucheng Liu, Lijun Ye (), Chunyang Liu, Jingji Wang and Haining Yin
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Fucheng Liu: Shanghai Academy of Spaceflight Technology, Shanghai 201109, China
Lijun Ye: School of Aerospace Engineering, Tsinghua University, Beijing 100084, China
Chunyang Liu: Shanghai Key Laboratory of Aerospace Intelligent Control Technology, Shanghai 201109, China
Jingji Wang: Shanghai Key Laboratory of Aerospace Intelligent Control Technology, Shanghai 201109, China
Haining Yin: Shanghai Key Laboratory of Aerospace Intelligent Control Technology, Shanghai 201109, China

Mathematics, 2023, vol. 11, issue 3, 1-22

Abstract: Aiming at the shortcomings of non-optimal fuel consumption and low accuracy of Geosynchronous orbit (GEO) satellites in the east/west station keeping (EWSK) at the current stage, a micro-thrust EWSK algorithm for GEO satellites based on a single-synovial surface is proposed. This algorithm has the characteristics of low fuel consumption and high control precision. However, when this algorithm performs GEO station switching under the condition of limited velocity increment, the mean longitude capture path may not be optimal, the capture time of the mean longitude is too long, and the engineering applicability is not good. In view of the above problems, a micro-thrust EWSK for GEO satellites based on dual synovial surfaces is proposed. Through the advance planning of the mean longitude, the control lag caused by the limited velocity increment is eliminated, the optimal path-planning problem of the mean longitude is solved, and the capture time of the mean longitude is greatly shortened. The two EWSK algorithms proposed in this paper have the advantages of small calculation amount, optimal fuel consumption, high precision and strong stability, which have good engineering application value.

Keywords: GEO satellite; micro-thrust; EWSK; mean longitude keeping; synovial control (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2023
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