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Nonlinear inverse models for the control of satellites with flexible structures

Reiner, Matthias and Bals, Johann (2014) Nonlinear inverse models for the control of satellites with flexible structures. In: Proceedings of the 10th International Modelica Conference - Lund, Sweden - Mar 10-12, 2014, pp. 577-587. LiU Electronic Press. 10th International Modelica Conference 2014, 10.- 12. März, 2014, Lund, Sweden. DOI: 10.3384/ecp14096577 ISBN 1650-3686

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Official URL: http://www.ep.liu.se/ecp/096/061/ecp14096061.pdf


Nonlinear inverse dynamic models can be utilized in various parts of advanced model-based control system design: reference trajectory optimization, feedforward control and feedback linearization. In this paper, a new synthesis approach for nonlinear inverse dynamic models of satellites with flexible structures is presented. For satellite configurations with unstable zero dynamics, a stable inverse model approximation is proposed which has been successfully applied to robots with flexible bodies. This inverse modeling approach is part of the newly developed DLR Space Systems Library for objectoriented modeling and simulation of satellites and launchers in a detailed space environment. For satellites with flexible structures, the library provides models for normal simulation mode and the necessary tools to directly generate approximate inverse models. In this paper, trajectory optimization is shown to be an important use case for inverse dynamic models. By inversion based reformulation of the trajectory optimization problem, the optimal reference motion of the control system can be determined in a reliable and efficient way.

Item URL in elib:https://elib.dlr.de/92164/
Document Type:Conference or Workshop Item (Speech)
Title:Nonlinear inverse models for the control of satellites with flexible structures
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Journal or Publication Title:Proceedings of the 10th International Modelica Conference - Lund, Sweden - Mar 10-12, 2014
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.3384/ecp14096577
Page Range:pp. 577-587
Tummescheit, HubertusUNSPECIFIED
Publisher:LiU Electronic Press
Series Name:Linköping Electronic Conference Proceedings
Keywords:satellite modeling; nonlinear inverse model; trajectory optimization; flexible structure
Event Title:10th International Modelica Conference 2014
Event Location:Lund, Sweden
Event Type:international Conference
Event Dates:10.- 12. März, 2014
Organizer:Modelica Association and Modelon
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):R - Vorhaben Robotische Explorationstechnologie (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of System Dynamics and Control > Space System Dynamics
Deposited By: Reiner, Matthias
Deposited On:15 Dec 2014 15:36
Last Modified:15 Dec 2014 15:36

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