Is it possible to deactivate the extrapolation in 1D-Table?

Question

Greetings,

while trying to understand the File Importing function from this thread: https://forum.plexim.com/11/is-it-possible-to-import-waveform-data-into-plecs It was found out that, when the datas in .CSV files "run out", the 1D-Table Block will automatically extrapolate the rest of data until end of simulation. This makes it hard to achieve a automatically adjusted simulation time by getting a warning signal, when the data stream has depleted itself during simulation.

Quesion: Any work around for this? Either disable Extrapolation or other form of stopping the simulation (Not aborting) will definitely help.

Thanks.

Answer 1

The From File component, introduced in PLECS 4.4, has an Output after last time step parameter where you can specify: linear extrapolation, hold last value, or specify last value.

If you want to keep using the old method of importing data, you could add a dummy time step / value pair just after the last pair in your series.  That way the result of the extrapolation is a constant value.  Another "lazy" workaround is to add a Saturation block.