Change/reset initial state values in a level 2 C-mex S-function
2 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Marcus
am 21 Jul. 2012
Kommentiert: Sebastián Gómez Jorge
am 2 Aug. 2023
Hi all! I'm creating a simulation with level 2 c-mex s-function, and I need to change some state values, when some conditions are verified. How can I do that? I read about the enabled subsystem, but I don't know how it works, and also I don't know if there is something faster that do the same thing.
Can you help me?
Thanks in advance!
0 Kommentare
Akzeptierte Antwort
Ryan G
am 24 Jul. 2012
If you wrote or have the c-code for the s-function you can simply add another input and write a conditional to reset the data when that condition is verified.
1 Kommentar
Pan Zhao
am 22 Jun. 2017
I was wondering whether this way really works. I tried this method and met the same problem Michael met (see the answer from Michael below and my comment under that) .
Weitere Antworten (3)
Michael Walker
am 16 Mai 2014
I have a similar problem, but the evaluation of the variable that triggers the reset is done inside the S-function itself. The problem I'm having is that I can't figure out how to actually reset a continuous state value. Although Simulink seems to let me change the value of variables I fetch with ssGetContStates(S), then next time those state values are needed (again invoking ssGetContStates(S)) they've reverted back to an integrated value of the original initial condition. How do I get this to work?
2 Kommentare
Pan Zhao
am 21 Jun. 2017
I have the same problem. Although we can set the ContStates in a S function, they revert to the integrated value of the original initial condition one sampling interval after the setting. Was wondering how we can really reset the states.
Sebastián Gómez Jorge
am 2 Aug. 2023
Same problem and there seems to be no solution. I tired reseting the cont states using the pointer provided by ssGetContStates, but it does not work. The recommended soulution of using an ensabled subsystem is no good, because I want to change the value of only one continuous state when a certain condition happens inside the sfunction. Very frustrating.
Kaustubha Govind
am 2 Aug. 2012
You can either follow Ryan's suggestion or put your S-function inside an enabled subsystem with "Output when disabled" set to "reset" - this will call your mdlInitializeConditions method every time the subsystem is disabled.
0 Kommentare
Siehe auch
Kategorien
Mehr zu Simulink Functions finden Sie in Help Center und File Exchange
Produkte
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!