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Port-Hamiltonian Mathematical Model of a Fluid Ring Attitude System.
- Source :
-
Energies (19961073) . Nov2021, Vol. 14 Issue 21, p6906. 1p. - Publication Year :
- 2021
-
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. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 19961073
- Volume :
- 14
- Issue :
- 21
- Database :
- Academic Search Index
- Journal :
- Energies (19961073)
- Publication Type :
- Academic Journal
- Accession number :
- 153601848
- Full Text :
- https://doi.org/10.3390/en14216906