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Building Hybrid Observers for Complex Dynamic Systems Using Model Abstractions

Mosterman, P. J. and Biswas, G. (1999) Building Hybrid Observers for Complex Dynamic Systems Using Model Abstractions. In: Hybrid Systems: Computation and Control Lecture Notes in Computer Science, 1569. Springer-Verlag, Berlin. pp. 178-192. ISBN 3-540-65734-7.

Full text not available from this repository.

Abstract

Controllers for embedded dynamic systems have to deal with models that combine continuous behavior evolution with discrete mode transitions. These transitions may cause discontinuous changes in the field that defines continuous system behavior and the variable values associated with the continuous state vector. In reality, these discontinuous changes are fast continuous transients. To simplify the analysis of these transients time scale and parameter abstractions are applied to system models causing instantaneous transitions and discontinuities in the state vector. The two abstraction events have very different impacts on the analysis of system behavior. We have developed a systematic modeling approach that introduces formal semantics for behavior generation corresponding to these two abstraction events. This paper discusses the implementation of this scheme in a hybrid observer to track embedded system behavior. The resultant observer is based on piecewise simpler continuous models with mode transitions defined between the piecewise models. Actual mode transitions in the system are provided by a digital controller and directly obtained from measuring physical variables, therefore, the resultant observer system does not deal with complicated mode estimation problems.

Document Type:Book Section
Additional Information: LIDO-Berichtsjahr=1999,
Title:Building Hybrid Observers for Complex Dynamic Systems Using Model Abstractions
Authors:
AuthorsInstitution or Email of Authors
Mosterman, P. J.UNSPECIFIED
Biswas, G.Vanderbilt University, Nashville, TN
Date:1999
Journal or Publication Title:Hybrid Systems: Computation and Control
Refereed publication:Yes
In ISI Web of Science:No
Volume:1569
Page Range:pp. 178-192
Editors:
EditorsEmail
van Schuppen, Frits W. Vaandragger Jan H.UNSPECIFIED
Publisher:Springer-Verlag, Berlin
Series Name:Lecture Notes in Computer Science
ISBN:3-540-65734-7
Status:Published
Keywords:predictive control, observers, hybrid systems, event iteration
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L ST - Starrflüglertechnologien
DLR - Research theme (Project):UNSPECIFIED
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Robotics and Mechatronics > Institut für Robotik und Systemdynamik
Deposited By: elib DLR-Beauftragter
Deposited On:16 Sep 2005
Last Modified:06 Jan 2010 16:25

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