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Modelica Hybrid Modeling and Efficient Simulation

Mattsson, Sven Erik and Otter, Martin and Elmqvist, Hilding (1999) Modelica Hybrid Modeling and Efficient Simulation. In: Proceedings fo the 38th IEEE Confrence on Decision and Control, CDC 1999, pp. 3502-3507. 38th IEEE Conference on Decision and Control, 1999-12-07 - 1999-12-10, Phoenix, Arizona (USA). ISBN 0-7803-5253-X.

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Abstract

Modelica is an object-oriented language for modeling of large and heterogeneous physical systems. Typical applications include mechatronic models in automo-tive and aerospace applications involving mechani-cal, electrical and hydraulic subsystems as well as control systems. Modeling of an ideal diode and Coulomb friction is discussed to illustrate the unique hybrid features of Modelica. The language has been designed to allow tools to generate efficient code automatically. Approaches supported by the Dynamic Modeling Laboratory Dymola from Dynasim are presented. Real-time simulation of an automatic gearbox is discussed to demonstrate the power of symbolic manipulation. A gearbox is inherently hybrid, since the structure varies during each gearshift. Friction is also an important phenomenon. It takes Dymola only a few seconds to translate a Modelica model of an automatic gearbox with 11 switching elements into efficient simulation code. A 500 MHz DEC alpha processor from dSPACE evaluates one Euler step including a possible mode switch in less than 0.18 ms

Document Type:Conference or Workshop Item (Speech)
Additional Information:LIDO-Berichtsjahr=1999,
Title:Modelica Hybrid Modeling and Efficient Simulation
Authors:
AuthorsInstitution or Email of Authors
Mattsson, Sven ErikDynasim AB, Lund
Otter, MartinUNSPECIFIED
Elmqvist, HildingDynasim AB, Lund
Date:1999
Journal or Publication Title:Proceedings fo the 38th IEEE Confrence on Decision and Control, CDC 1999
Page Range:pp. 3502-3507
Editors:
EditorsEmail
IEEE, UNSPECIFIED
ISBN:0-7803-5253-X
Status:Published
Keywords:Modelica, hybrid systems, object-oriented modeling, automatic gearbox
Event Title:38th IEEE Conference on Decision and Control
Event Location:Phoenix, Arizona (USA)
Event Type:international Conference
Event Dates:1999-12-07 - 1999-12-10
Organizer:CDC'99
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W SY - Technik für Raumfahrtsysteme
DLR - Research area:Space
DLR - Program:W SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):W - Weiterentwicklung Robotik - Mechatronik und Dynamik (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Robotics and Mechatronics
Deposited By: elib DLR-Beauftragter
Deposited On:15 Mar 2006
Last Modified:12 Dec 2013 20:01

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