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Digital archive of theses discussed at the University of Pisa

 

Thesis etd-01092023-111502


Thesis type
Tesi di dottorato di ricerca
Author
QUARTULLO, RENATO
URN
etd-01092023-111502
Thesis title
Model predictive control techniques for low-thrust spacecraft rendezvous
Academic discipline
ING-INF/04
Course of study
SMART INDUSTRY
Supervisors
tutor Prof. Garulli, Andrea
correlatore Prof. Giannitrapani, Antonio
Keywords
  • Aerospace
  • Automation
  • Control
  • MPC
Graduation session start date
12/01/2023
Availability
Full
Summary
The first objective of this thesis is to present innovative MPC schemes, in which
the cost function is defined by a sum of vector norms, instead of the typical
quadratic one. This feature allows one to meet fuel optimization requirements
which are typical of space applications. Closed-loop stability for both linear
time-invariant and time-periodic systems is guaranteed by systematic methods
to construct terminal cost and terminal constraints. Secondly, the proposed
control schemes are applied to a variety of low-thrust autonomous space rendezvous
missions, within an optimization-based framework. In particular, the
scenarios addressed are: a long-range rendezvous on a near-circular orbit; a midrange
mission involving periodic dynamics due to geopotential effects and solar
eclipses; a halo orbit tracking mission. Another MPC strategy, which is able
to account for mission-specific requirements, while satisfying on-off constraint
inherent to the adopted EP technology, is presented. Finally, the trajectory
planning problem for rendezvous and docking to a tumbling target is addressed.
The use of a variable-horizon MPC strategy is proposed in order to construct
an appropriate maneuver plan.
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