| Title | Improving Newton's method for Initialization of Modelica models |
| Authors | Johan Ylikiiskilä, Johan Åkesson, Claus Führer |
| Alternative Location | http://www.control.lth.se/d... |
| Year | 2011 |
| Document type | Conference paper |
| Conference name | 8th International Modelica Conference |
| Conference Date | 2011-03-20 |
| Conference Location | Dresden, Germany |
| Status | Published |
| Quality controlled | Yes |
| Language | eng |
| Abstract English | Initializing a model written in Modelica translates to finding consistent initial values to the underlying DAE. Adding initial equations and conditions creates a system of non-linear equations that can be solved for the initial configuration. This paper reports an implementation of Newton's method to solve the non-linear initialization system. This implementation also uses a regularization method to deal with singular Jacobians as well as sparse solvers to exploit the sparsity structure of the Jacobian. The implementation is based on the open-source projects JModelica.org and Assimulo, KINSOL from the SUNDIALS suite and SuperLU. |
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