Hi all,

I am currently working on a Library for Battery Module Simulation. In this context I am looking for a function (or a block) comparable to Matlab's "interp3" which gives me a solution for y = f(x1, x2, x3). I have succeeded building my own modelica function but it did not quite match the performance requirements. In order to achieve a better performance, I investigated the usage of external C functions but I could not manage to get it working (I am a absolute beginner to C coding, so thats probably an issue).

Apart from building my own function and trying to implement a external c function, I was also investigating in Packages, which already offer a ND-Table. My investigation lead me to the SDF and the DataFiles Package both available in Dymola. SDF does not really match my requirements but the DataFiles package showed promising results with my Dymola trial version.

Now my questions:

a) Does anybody know a way apart from the mentioned to implement 3D interpolation in OpenModelica?
b) Is it possible to use the DataFiles Package in OpenModelica? I easily managed to open the library in OpenModelica but I have no clue how to establish the connection from the used "interpolate"-function to the underlying C library.


I am really stuck with this topic, I would really appreciated some help!

Cheers!!