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Abstract <p>This article considers the control of the center of mass motion of a spacecraft (SC) with a low-thrust propulsion system in the vicinity of an irregularly shaped asteroid. Formation of the motion control program during mission planning is complicated by incomplete knowledge of the asteroid’s gravity. A superposition of N attractive points rotating with the asteroid’s own angular velocity at a constant distance can be used as a mathematical model of the asteroid’s gravitational potential. A preliminary study of the research object allows calculating the characteristics of such a model with two attractive centers. Software control in the vicinity of the asteroid for target maneuvers is formed on the basis of a combination of locally optimal control laws and the developed algorithm of relay switching between them with a dead zone. The developed algorithms and methods are illustrated by the results of modeling the SC motion in the vicinity of the asteroid 433 Eros.</p>

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Program Control of a Spacecraft with Electric Propulsion Engines in the Vicinity of an Asteroid

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • O. L. Starinova,
  • D. Chen,
  • P. V. Fadeenkov

摘要

Abstract

This article considers the control of the center of mass motion of a spacecraft (SC) with a low-thrust propulsion system in the vicinity of an irregularly shaped asteroid. Formation of the motion control program during mission planning is complicated by incomplete knowledge of the asteroid’s gravity. A superposition of N attractive points rotating with the asteroid’s own angular velocity at a constant distance can be used as a mathematical model of the asteroid’s gravitational potential. A preliminary study of the research object allows calculating the characteristics of such a model with two attractive centers. Software control in the vicinity of the asteroid for target maneuvers is formed on the basis of a combination of locally optimal control laws and the developed algorithm of relay switching between them with a dead zone. The developed algorithms and methods are illustrated by the results of modeling the SC motion in the vicinity of the asteroid 433 Eros.