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This paper investigates the coordinative orbit and attitude control system in a satellite formation consisting of n members. Multiple uncertainties including the number of available members, external disturbances and parametric perturbations are taken into consideration. To improve system performances, an observer based nonsingular terminal sliding mode control (NTSMC) law is designed in orbit and attitude loops. The extended state observers are developed to estimate unknown relative velocities, immeasurable angular velocities and lumped disturbances. The NTSMC law is proposed to realize high-accuracy orbit and attitude tracking. Finally, simulations are implemented for a formation consisting of four cube-satellites to verify the effectiveness of proposed coordinative method.

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Fault-Tolerant Orbit and Attitude Control for Satellite Formation with Leader-Following Configuration

  • 会议论文

  • 发表日期：

    2025年

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  • Liming Fan,
  • Qiang Zhang,
  • Guangde Xu,
  • Zongbo He,
  • Mingyang Zhang

摘要

This paper investigates the coordinative orbit and attitude control system in a satellite formation consisting of n members. Multiple uncertainties including the number of available members, external disturbances and parametric perturbations are taken into consideration. To improve system performances, an observer based nonsingular terminal sliding mode control (NTSMC) law is designed in orbit and attitude loops. The extended state observers are developed to estimate unknown relative velocities, immeasurable angular velocities and lumped disturbances. The NTSMC law is proposed to realize high-accuracy orbit and attitude tracking. Finally, simulations are implemented for a formation consisting of four cube-satellites to verify the effectiveness of proposed coordinative method.