Authors

Juan Cristobal Alcaraz Tapia, Carlos E. Castañeda, Héctor Vargas-Rodríguez

Abstract

In this article, we propose a mathematical model using the port-Hamiltonian formalism for a satellite’s three-axis attitude system comprising fluid rings. Fluid rings are an alternative to reaction wheels used for the same purpose, since, for the same mass, they can exert a greater torque than a reaction wheel as the fluid can circulate the periphery of the satellite. The port-Hamiltonian representation lays the foundation for a posterior controller that is feasible, stable, and robust based on the interconnection of the system to energy shaping and/or damping injection components, and by adding energy routing controllers. The torques exerted by the fluid rings are modeled using linear regression analysis on the experimental data got from a prototype of a fluid ring. Since the dynamics of turbulent flows is complex, the torques obtained by the prototype lead to a simpler first approach, leaving its uncertainties to a controller. Thus, the attitude system model could be tested in a future prototype before considering a spatial environment.

Citation

  • Journal: Energies
  • Year: 2021
  • Volume: 14
  • Issue: 21
  • Pages: 6906
  • Publisher: MDPI AG
  • DOI: 10.3390/en14216906

BibTeX

@article{Alcaraz_Tapia_2021,
  title={{Port-Hamiltonian Mathematical Model of a Fluid Ring Attitude System}},
  volume={14},
  ISSN={1996-1073},
  DOI={10.3390/en14216906},
  number={21},
  journal={Energies},
  publisher={MDPI AG},
  author={Alcaraz Tapia, Juan Cristobal and Castañeda, Carlos E. and Vargas-Rodríguez, Héctor},
  year={2021},
  pages={6906}
}

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References