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Effects of Event-Free Noise Signals on Continuous-Time Simulation Performance

van der Linden, Franciscus L. J. and Klöckner, Andreas and Zimmer, Dirk (2015) Effects of Event-Free Noise Signals on Continuous-Time Simulation Performance. In: IFAC-PapersOnLine, 48 (1), pp. 280-285. Elsevier. MATHMOD 2015 - 8th Vienna International Conference on Mathematical Modelling, 18.-20. Feb. 2015, Wien. doi: [10.1016/j.ifacol.2015.05.039]. ISSN 1474-6670.

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Generating stochastic input signals such as noise in physical systems is traditionally implemented using discrete random number generators based on discrete time-events. Within the Modelica community, random number generators free of time-events have recently been proposed in order to increase the performance of system simulations. However, the impact of such signals on commonly used solvers, such as DASSL or Radau IIA, is still under discussion. In order to provide better understanding for modeling practitioners, we examine the influence of event-free noise models on simulation performance. To this end, we conduct practical simulation experiments with systems of three sizes, two solvers, and different parameters. Results indicate that step-size control can handle event-free noise generators well and that they outperform sampled generators. The findings can be related to other time-dependent system inputs.

Item URL in elib:https://elib.dlr.de/96981/
Document Type:Conference or Workshop Item (Speech)
Title:Effects of Event-Free Noise Signals on Continuous-Time Simulation Performance
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
van der Linden, Franciscus L. J.franciscus.vanderlinden (at) dlr.deUNSPECIFIED
Klöckner, Andreasandreas.kloeckner (at) dlr.deUNSPECIFIED
Zimmer, DirkDirk.Zimmer (at) DLR.deUNSPECIFIED
Date:February 2015
Journal or Publication Title:IFAC-PapersOnLine
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
DOI :[10.1016/j.ifacol.2015.05.039]
Page Range:pp. 280-285
Series Name:IFAC-PapersOnLine
Keywords:Numerical simulation, Random number generators, Continuous time systems, Integrators, Software performance
Event Title:MATHMOD 2015 - 8th Vienna International Conference on Mathematical Modelling
Event Location:Wien
Event Type:international Conference
Event Dates:18.-20. Feb. 2015
Organizer:Vienna University of Technology
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Systems and Cabin (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of System Dynamics and Control > Aircraft System Dynamics
Deposited By: van der Linden, Franciscus
Deposited On:24 Aug 2015 15:29
Last Modified:31 Jul 2019 19:53

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