Initial Value Calculation for DAE with Higher Index
Andreas Uhlig, Torsten Blochwitz, Uwe Schnabel, Tobias Nähring · Linköping electronic conference proceedings · 2009
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.