ETD system

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Tesi etd-02072018-153522


Thesis type
Tesi di dottorato di ricerca
Author
FRANZINI, GIOVANNI
URN
etd-02072018-153522
Title
Relative Motion Dynamics and Control in the Two-Body and in the Restricted Three-Body Problems
Settore scientifico disciplinare
ING-INF/04
Corso di studi
INGEGNERIA DELL'INFORMAZIONE
Commissione
tutor Prof. Innocenti, Mario
Parole chiave
  • H-infinity control
  • lunar orbit
  • rendezvous
  • three-body problem
  • spacecraft relative motion
Data inizio appello
16/05/2018;
Consultabilità
completa
Riassunto analitico
The objective of the present Thesis is a detailed study of relative motion dynamics and control in a two-body and a three-body gravity fields. For the former scenario, a general set of equations for the inclusion of arbitrary orbital perturbations is derived. The equations are then used for the design of a nonlinear H-infinity controller based on the state-dependent Riccati equation technique. A closed-form solution for the H-infinity control problem for the relative motion control on elliptic orbits is also presented, based on a linearized time-varying set of equations. Relative motion in the three-body scenario is also studied. In particular, a nonlinear set of equations for relative motion description in the local-vertical local-horizon frame is derived. Starting from this set, simplified equations are proposed and their performance compared. The computation of rendezvous maneuvers adopting both impulses or continuous thrust is then presented, in order to establish potential feasible trajectories.
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