Saving/Loading the SimState Programmatically

Question

Benjamin 2011-2-21

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1736-saving-loading-the-simstate-programmatically

I have a problem with saving/loading SimState programmatically. It works when i do it manually in the Simulink settings, but when doing it in a m file i get an error. My code is simply

simfile = 'simfile';
set_param(simfile, 'SaveFinalState', 'on', 'FinalStateName','SimState','SaveCompleteFinalSimState', 'on');
set_param(simfile, 'LoadInitialState', 'off');
simOut = sim(simfile,'StopTime',num2str(10));
set_param(simfile, 'SaveFinalState', 'off');
set_param(simfile, 'LoadInitialState', 'on', 'InitialState','SimState');
simOut = sim(simfile,'StopTime',num2str(20));

resulting in an error

??? Error using ==> simtest at 10
Error evaluating expression 'SimState' for 'Initial state' specified in the Configuration Parameters dialog for block diagram 'simfile': Undefined function or variable
'SimState'.

What am i missing?

Thanks :)

Benjamin

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Answer 1

Benjamin 2011-2-21

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https://ww2.mathworks.cn/matlabcentral/answers/1736-saving-loading-the-simstate-programmatically#answer_2563

Thanks for quick response :)

I changed the code into simOut = sim(simfile,'StopTime',num2str(10),'SaveFinalState','on','FinalStateName','SimState','SaveCompleteFinalSimState', 'on'); simOut = sim(simfile,'StopTime',num2str(20),'SaveFinalState', 'off','LoadInitialState', 'on', 'InitialState','SimState');

which works. I didn't get your answer though. I thought the string you questioned, made that the mdl file called 'simfile.mdl' save the final values under the name 'SimState'. And these states are then loaded later. What am i misunderstanding?

Thanks again :)

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Paulo Silva 2011-2-21

btw thanks for posting your code, it might be useful for other like me.

Benjamin 2011-2-21

You're welcome :)

Ben

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Answer 2

Ronald Verhoeven 2011-2-26

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https://ww2.mathworks.cn/matlabcentral/answers/1736-saving-loading-the-simstate-programmatically#answer_3271

I have exactly the same problem. I didn't get the answer yet. Who could help me solving the above posted question? Thank you.

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Benjamin 2011-2-28

For the record: I forgot to mention, that the assignin() function is needed to assign xFinal into the workspace, if the sim() function is called from within a function.

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