Systems Engineering and Electronics ›› 2025, Vol. 47 ›› Issue (6): 1975-1984.doi: 10.12305/j.issn.1001-506X.2025.06.25

• Guidance, Navigation and Control • Previous Articles     Next Articles

Attitude dynamics and aerodynamic compensation control of low-orbit mass moment spacecraft

Zhengliang LU, Jiatong LI, Yuandong HU, Wenhe LIAO   

  1. School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
  • Received:2024-09-26 Online:2025-06-25 Published:2025-07-09
  • Contact: Yuandong HU

Abstract:

Aiming at the serious interference of aerodynamic eccentric moment on the attitude control performance of ultra-low Earth orbit satellites, an adaptive dynamic compensation control method for micro-nano satellites based on mass moment technology is proposed. For the mass moment drive method based on ball screw pairs, considering the mechanism transmission friction, a complete dynamic model of mass moment satellite rotation, translation, and actuator translation is established to clarify the influence of various parameters on disturbance moment. To address the uncertainties in the aerodynamic environment and the unknown center of mass of the satellite, an adaptive dynamic compensation scheme is designed, which includes a radial basis function (RBF)-based disturbance observer, a sliding mode controller, and an integral separated proportional-integral-derivation (PID) controller. Simulation results show that the proposed compensation control method can accurately estimate and compensate for aerodynamic moment disturbances and effectively eliminate the influence of friction in the mass moment mechanism, and validate the effectiveness of the proposed aerodynamic compensation control method.

Key words: ultra-low Earth orbit satellite, attitude control, aerodynamic moment, friction characteristics, sliding mode control

CLC Number: 

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