| Título: | Station-keeping control design for Earth-Moon L1 libration point halo orbits |
| Autor: | Thiago César Lousada Marsola |
| Programa: | Engenharia Aeronáutica e Mecânica |
| Área de Concentração: | Projeto Aeronáutico, Estruturas e Sistemas Aeroespaciais |
| Orientador : | José Manoel Balthazar |
| Coorientador : | Sandro da Silva Fernandes |
| Ano de Publicação : | 2018 |
| Curso : | Mestrado Acadêmico |
| Assuntos : | Pontos de equilíbrio de Lagrange |
| t | Problema de três corpos |
| t | Mecânica celeste |
| t | Sistemas Terra-Lua |
| t | Órbitas |
| t | Sistemas dinâmicos |
| t | Controle ótimo |
| t | Engenharia aeroespacial |
| Resumo : | In this work, we consider the dynamics of the Circular Restricted Three-Body Problem for the Earth-Moon system. Taking into account the L1 equilibrium point in this dynamics, it is constructed a family of periodic orbits in the vicinity of this libration point, called halo orbits. The construction is built using an analytical approach as a first guess with a numerical method in addition, in order to correct the linear approximation procedure. Withal the stability of this libration point trajectories analyzed and proven to be unstable, a spacecraft moving near this point must use some correction maneuver to remain close to the nominal orbit. We proposed a station-keeping strategy applicable to those trajectories using optimal linear and nonlinear feedback control laws. The proposed nonlinear control law was synthesized through the solution of an Riccati equation. |
| Data de Defesa : | 07/12/2018 |
| Texto na íntegra : | [Visualizar] |