Modern spacecraft often contain large quantities of liquid fuel to execute station keeping and attitude maneuvers for space missions. In recent works a hybrid control method based on input shaping technique and feedback linearization for liquid-filled spacecraft maneuvers has been proposed to guarantee that the attitude maneuver does not excite the liquid-fuel slosh. In general the combined liquidstructure system is very difficult to model, and the analyses are based on some assumed simplification. A realistic representation of the liquid dynamics inside closed containers can be approximated by an equivalent mechanical system. The technique of equivalent mechanical models can be considered a very useful mathematical tool for solving the complete dynamics problem of a system containing liquid Thus they are particularly useful when designing a control system or to study the stability margins of the coupled dynamics The commonly used equivalent mechanical models are the mass–spring models and the pendulum models.
Dynamic modelling and control of a flexible spacecraft with fuel slosh / Gasbarri, Paolo; Sabatini, Marco; Pisculli, Andrea. - CD-ROM. - Volume 8, 2015:(2015), pp. 6300-6316. (Intervento presentato al convegno 66th International Astronautical Congress 2015: Space - The Gateway for Mankind's Future, IAC 2015; Jerusalem; Israel; 12 October 2015 through 16 October 2015; Code 122921 tenutosi a Jerusalem nel 12-16 October 2015).
Dynamic modelling and control of a flexible spacecraft with fuel slosh
GASBARRI, Paolo;SABATINI, MARCO;PISCULLI, ANDREA
2015
Abstract
Modern spacecraft often contain large quantities of liquid fuel to execute station keeping and attitude maneuvers for space missions. In recent works a hybrid control method based on input shaping technique and feedback linearization for liquid-filled spacecraft maneuvers has been proposed to guarantee that the attitude maneuver does not excite the liquid-fuel slosh. In general the combined liquidstructure system is very difficult to model, and the analyses are based on some assumed simplification. A realistic representation of the liquid dynamics inside closed containers can be approximated by an equivalent mechanical system. The technique of equivalent mechanical models can be considered a very useful mathematical tool for solving the complete dynamics problem of a system containing liquid Thus they are particularly useful when designing a control system or to study the stability margins of the coupled dynamics The commonly used equivalent mechanical models are the mass–spring models and the pendulum models.File | Dimensione | Formato | |
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