Simulink Unable to Identify Variable in Base Workspace

2016 6 1
2 个回答
更新时间：2018 9 21
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I am running a program which calls Simulink, however when simulink gets called I get this error:
Error using Run_Sim (line 39)
Error evaluating expression 'Tsim' for 'StopTime' specified in the Configuration
Parameters dialog for block diagram 'New_model_working_plecs_2012b': Undefined function or
variable 'Tsim'.
however, Tsim is in the base workspace so im not sure what is going wrong here, this file also runs fine matlab 2012

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回答（2 个）

Sebastian Castro
Sebastian Castro 2016-6-2

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Are you calling the command from inside a MATLAB function?
If so, you need to make sure to tell the sim command to use the current caller's (the function's) workspace.
simout = sim('modelName','SrcWorkspace','current', ... )
- Sebastian

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Jake G
Jake G 2016-6-2
I am but the variables I need are in the base workspace.
Error using Run_Sim (line 39)
Undefined function or variable 'N_samples'.
and after I run 'Main' I can look over into the workspace and see:
'N_samples 600'
really not to sure whats going on here because like I said this code will run in 2012(I need it to run in this version)
Sebastian Castro
Sebastian Castro 2016-6-2
Oh, so you want to use the base workspace inside the function.
Would 'SrcWorkspace','base' do it for you?
- Sebastian
Jake G
Jake G 2016-6-2
I am starting to think my error is more involved than this, I am running matlabs Genetic Algorithm using simulink as the fitness function and that is where my problem is coming from
Jake G
Jake G 2016-6-3
I figured out the problem, Thanks for your help!

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Arihant Sureka
Arihant Sureka 2018-9-19
编辑：Sebastian Castro 2018-9-19

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Hi Sebastian
The Version is Matlab 2017b and still the Problem persists. I have already defined my model properties in the base Workspace but Simulink is not able to capture it. Also, this command line
simOut = parsim(simIn,'SrcWorkspace','current');
gives an error
'Invalid parameter 'SrcWorkspace' specified'.
Please guide further as there isn#t any answer available anywhere.
Thanks

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Sebastian Castro
Sebastian Castro 2018-9-19
Your question is on parsim and not sim, which are different functions. As the error message suggests, parsim does not have a SrcWorkspace property to configure.
Looking at the documentation, and depending on how your data is set up, you either want to use AttachedFiles or TransferBaseWorkspaceVariables.
https://www.mathworks.com/help/simulink/slref/parsim.html
- Sebastian
Arihant Sureka
Arihant Sureka 2018-9-21
Hi Sebastien
The thing worked. Thanks for the help but since the Matlab 2017b has Bugs I had to clear the previously created slprj Folder and stuff.
Thanks and cheers!

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