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

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