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Sloshing-aware attitude control of impulsively actuated spacecraft

Sopasakis, Pantelis and Bernardini, Daniele and Strauch, Hans and Bennani, Samir and Bemporad, Alberto Sloshing-aware attitude control of impulsively actuated spacecraft. In: European Control Conference, 15th-17th July 2015, Linz, Austria (In Press) (2015)

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Abstract

Upper stages of launchers sometimes drift, with the main engine switched-off, for a longer period of time until re-ignition and subsequent payload release. During this period a large amount of propellant is still in the tank and the motion of the fluid (sloshing) has an impact on the attitude of the stage. For the flight phase the classical spring/damper or pendulum models cannot be applied. A more elaborate sloshing-aware model is described in the paper involving a time-varying inertia tensor. Using principles of hybrid systems theory we model the minimum impulse bit (MIB) effect, that is, the minimum torque that can be exerted by the thrusters. We design a hybrid model predictive control scheme for the attitude control of a launcher during its long coasting period, aiming at minimising the actuation count of the thrusters.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Aerospace, hybrid systems, predictive control for linear systems
Subjects: Q Science > QA Mathematics
Q Science > QA Mathematics > QA75 Electronic computers. Computer science
T Technology > T Technology (General)
Research Area: Computer Science and Applications
Depositing User: Pantelis Sopasakis
Date Deposited: 12 May 2015 10:23
Last Modified: 12 May 2015 10:23
URI: http://eprints.imtlucca.it/id/eprint/2673

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