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Model Semantics and Simulation of Time Scale Abstractions in Collision Models

Mosterman, P.J. and Broenink, J.F. and Biswas, G. (1998) Model Semantics and Simulation of Time Scale Abstractions in Collision Models. 3rd International Congress of the Federation of EUROpean SIMulation Societies, Helsinki, April 14-17, 1998.

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Abstract

Effective design of models requires simplification of different components of the system. For example, interactions of the system under scrutiny with its environment are modeled as idealized sources and sinks, and system behavior is derived from idealized interactions among constituent components. Some of the more detailed behavior is governed by small parameters, that produce continuous but complex nonlinear behaviors. These nonlinear continuous behaviors are often simplified to piecewise continuous forms, which then results in discontinuities at the temporal or spatial scale of interest. The resulting models are of a mixed continuous/discrete, or hybrid, nature. Physical systems theory based on continuity of power and conservation of energy is well understood. However, once discontinuous effects are included, these laws may be violated at the macroscopic level. The challenge is to endow hybrid models with semantics that do not violate the underlying physical nature of the system. This paper studies the effects and semantics of time scale abstraction, such as embodied by Newton's collision rule. The results show that hybrid modeling of physical systems can be systematic without the need for ad hoc hysteresis effects.

Item URL in elib:https://elib.dlr.de/3495/
Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1999,
Title:Model Semantics and Simulation of Time Scale Abstractions in Collision Models
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Mosterman, P.J.UNSPECIFIEDUNSPECIFIED
Broenink, J.F.University of TwenteUNSPECIFIED
Biswas, G.Vanderbilt University, Nashville, TNUNSPECIFIED
Date:1998
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 230-237
Status:Published
Keywords:hybrid systems, bond graphs, physical system, modeling, simulation, event iteration, collision models
Event Title:3rd International Congress of the Federation of EUROpean SIMulation Societies, Helsinki, April 14-17, 1998
Organizer:Eurosim'98
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):UNSPECIFIED
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Robotics and Mechatronics (until 2012) > Institut für Robotik und Systemdynamik
Deposited By: DLR-Beauftragter, elib
Deposited On:16 Sep 2005
Last Modified:06 Jan 2010 16:29

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