Conference article

Implementing stabilized co-simulation of strongly coupled systems using the Functional Mock-up Interface 2.0

Antoine Viel
LMS Imagine, Roanne, France

Download articlehttp://dx.doi.org/10.3384/ecp14096213

Published in: Proceedings of the 10th International Modelica Conference; March 10-12; 2014; Lund; Sweden

Linköping Electronic Conference Proceedings 96:22, p. 213-223

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Published: 2014-03-10

ISBN: 978-91-7519-380-9

ISSN: 1650-3686 (print), 1650-3740 (online)

Abstract

This paper addresses the main issue encountered with the co-simulation of coupled systems that exchange energy;i.e. the trade-off between computational performances and numerical stability. This property is first explained in details with the help of a simple generic test system for which a large oversampling with respect to the Nyquist frequency is required in order to keep a good level of accuracy. The linearly implicit stabilization method from Arnold is then implemented and tested thanks to the directional directives computation capability of the FMI for Co-simulation 2.0 standard. Some minor extensions to the standard are proposed to efficiently implement the method. When applied to the test system; it is shown that large co-simulation steps can be taken; and hence significant computation time speed-ups are observed.

Keywords

Functional Mock-up Interface; cosimulation; linear system theory; stability

References

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