Andreas Uhlig
ITI GmbH, Germany
Torsten Blockwitz
ITI GmbH, Germany
Uwe Schnabel
ITI GmbH, Germany
Tobias Nähring
ITI GmbH, Germany
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http://dx.doi.org/10.3384/ecp09430122Published in: Proceedings of the 7th International Modelica Conference; Como; Italy; 20-22 September 2009
Linköping Electronic Conference Proceedings 43:25, p. 233-242
Published: 2009-12-29
ISBN: 978-91-7393-513-5
ISSN: 1650-3686 (print), 1650-3740 (online)
The solution of Differential-Algebraic Equations (DAEs) requires the calculation of initial values at the beginning of the simulation as well as after discontinuities. An approach is described that allows consistent initial value calculation (IVC) for higher index DAE with structural changes. To consider rigid impacts integral equations for the conservation of momentum are automatically generated. The method includes handling of fixed initial values and the observance of feasible regions.
