Article | Proceedings of the 11th International Modelica Conference, Versailles, France, September 21-23, 2015 | How to Shape Noise Spectra for Continuous System Simulation
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Title:
How to Shape Noise Spectra for Continuous System Simulation
Author:
Andreas Klöckner: DLR German Aerospace Center, Institute of System Dynamics and Control, We√üling, Germany, Andreas Knoblach: DLR German Aerospace Center, Institute of System Dynamics and Control, We√üling, Germany, Andreas Heckmann: DLR German Aerospace Center, Institute of System Dynamics and Control, We√üling, Germany,
DOI:
10.3384/ecp15118411
Download:
Full text (pdf)
Year:
2015
Conference:
Proceedings of the 11th International Modelica Conference, Versailles, France, September 21-23, 2015
Issue:
118
Article no.:
044
Pages:
411-418
No. of pages:
8
Publication type:
Abstract and Fulltext
Published:
2015-09-18
ISBN:
978-91-7685-955-1
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press, Linköpings universitet


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Noise for continuous-time system simulation is relevant for many applications, where time-domain results are required. Simulating such noise raises the need to consistently shape the frequency content of the signal. However, the methods for this task are not obvious and often state space implementations of form filters are approximated. In this paper, we address the problem with a new method relying on directly using the specified power spectral density for a convolution filter. For the example of railway track irregularities, we explain how to derive the required filters, implement them in the open-source Noise library, and verify the results. The new method produces correct results, is very simple to use, and enables new features for time simulation of physical systems.

Keywords: Noise; power spectral density; track irregularity

Proceedings of the 11th International Modelica Conference, Versailles, France, September 21-23, 2015

Author:
Andreas Klöckner, Andreas Knoblach, Andreas Heckmann
Title:
How to Shape Noise Spectra for Continuous System Simulation
DOI:
http://dx.doi.org/10.3384/ecp15118411
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Proceedings of the 11th International Modelica Conference, Versailles, France, September 21-23, 2015

Author:
Andreas Klöckner, Andreas Knoblach, Andreas Heckmann
Title:
How to Shape Noise Spectra for Continuous System Simulation
DOI:
http://dx.doi.org/10.3384/ecp15118411
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