Low-Thrust Control

Author: Tianjiang Shuo

Website: https://cislunarspace.cn

Definition

An orbit correction approach using sustained, low-magnitude thrust. Unlike impulsive high-thrust maneuvers, low-thrust is applied continuously within each control interval at magnitudes far smaller than the spacecraft weight, suited for long-duration station-keeping near collinear libration points. The paper demonstrates that for a third-order Halo orbit at the Sun-Earth-Moon L2 point, control every 1.8 days over 10 years requires a total ΔV of approximately 1132 m/s.

Application Value

This term has significant application value in cislunar space missions。In the orbital design phase, engineers use relevant theories for trajectory optimization；In navigation and orbit determination, it is used to improve measurement accuracy；In attitude control and orbit maintenance tasks, it ensures stable spacecraft operation。In practical applications, parameter optimization and algorithm adaptation can be combined with mission requirements to improve mission success rate and resource utilization efficiency。

References

  • 关于探测器定点在共线平动点附近的控制问题
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Contributors: ouyangjiahong, Ou Yang Jiahong