Phasing of Satellites in a Single Orbital Plane: A Lyapunov Control Approach

Studenteropgave: Kandidatspeciale og HD afgangsprojekt

  • Michael Juul Nielsen
  • Jacob Wesenberg
4. semester, Regulering og Automation (cand.polyt.), Kandidat (Kandidatuddannelse)
The aim of this project was to phase grouped satellites in a single orbital plane. The project was done as a part of the research project MARIOT, which seeks to develop a satellite based maritime IoT network using VDES communication. First, a problem analysis investigating the different aspects of a satellite in orbit are presented. This included orbit parameters, different actuation methods, specifications of antennas, and some satellite constellations currently providing communication coverage around the world. Kinematics and dynamics describing a satellite with respect to another satellite in orbit were defined. The dynamics included modelling of gravitational and atmospheric drag perturbations, which was verified using the program AGI STK. A PD-, LQR-, and Lyapunov controller was implemented and tested in MATLAB/Simulink. The PD controller was stable distant to the reference, the LQR controller was stable near the reference, and the Lyapunov controller was stable all the way. The Lyapunov control was introduced to drag and remained stable. The implementation of the system was deemed successful.
Udgivelsesdato4 jun. 2020
Antal sider97
ID: 333575682