Circuit modeling and hysteresis loop?

Hello,

I am envolved in a project where I need to model an RC circuit BUT the output needs to be displayed as a hysteresis loop ( Field (V/m) v.s. Displacement (Q/m^2)).

I am able to model an RC circuit no problem. I can view voltage on the scope no problem. BUT I cannot find an obivous solution to output the data as a loop.

Is there a module block that does this? Is a solution to capture the voltage across the cap and convert and graph it in matlab code? Please advise any direction.

thanks,

Mike

[Sam Chak]

Hi @MICHAEL NORRELL

Can you make a basic sketch of what the hysteresis loop of the Field vs. Displacement looks like?

[MICHAEL NORRELL]

@Sam Chak A pure capacitor will look like a line. As the capacitor gets lossier the line opens to a loop.

Answer 1

[Brahmadev]

Hi Michael,

You can use the "XY graph" block to plot the Hysteresis Curve. Necessary conversions should be made to get the Displacement output from the current and Field from the voltage.

You can refer to the documentation of "Record, XY graph" for more information.

https://www.mathworks.com/help/simulink/slref/record.html

Hope this helps!

[MICHAEL NORRELL]

thank you for the reply. I was able to do something similar to plot collected lab data vs. modeled data. The results will be a soon to be published paper. :)