How to compile Simulink models before doing simulation?

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Rednar
Rednar 2013-7-12
评论： Philipp 2024-10-21
I'm working on a MATLAB script that will run different Simulink models but everytime I load one using sim(myModel) it takes an awful lot of time and I need its execution to be practically immediate.
Is there a way to compile at the start of the script and later on when I need to run the simulation just tell it 'play' somehow so that it will run without taking time to load anything else? Or is there any other workaround for this problem?
By the way I tried using
open_system(myModel)
and it gives me an error: Invalid Simulink object handle
Unfortunately that's all it says, but if that's the answer to compiling before the simulation, any ideas of what the problem could be?
Thanks.
  1 个评论
Kaustubha Govind
Kaustubha Govind 2013-7-12
Try open_system('myModel') if myModel is the name of your model. This just opens the model, but doesn't compile it.

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采纳的回答

Kaustubha Govind
Kaustubha Govind 2013-7-12
You can use the modelname command to compile the model. For example, if your model is named myModel.mdl or myModel.slx, use the following set of commands:
myModel([], [], [], 'compile')
myModel([], [], [], 'term')
Note that Simulink will still need to perform some compilation tasks when you run the simulation, but if you have Stateflow charts, MATLAB Function blocks, or referenced models, it will definitely help to pre-compile your model.
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Han Geerligs
Han Geerligs 2024-9-24
when trying this approach I found that it doe not work for models with Accelerator mode. It reports
'Accelerator mode is not supported through the model command.'
Any suggestion how to solve this?
--Han
Philipp
Philipp 2024-10-21
Hint, as I struggled a while on this:
If the name of your model is stored in a variable e.g. testMdlName, then you can not execute
testMdlName([], [], [], 'compile')
I got the error: Index in position 4 exceeds array bounds. Index must not exceed 1.
But you can do this:
eval( [testMdlName '([], [], [], ''compile'')'] )

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更多回答（2 个）

Brian Kim
Brian Kim 2023-5-19
You can use also use set_param as well to compile the model
set_param(modelName, 'SimulationCommand', 'update')
The difference is that in scripting workflow, this will wait until the compilation is finished.
  1 个评论
August
August 2024-4-16
When I use that command I get the build text through the command window and eventually get the error:
Warning: Non-scalar data in first argument to set_param is detected.
Only first handle in the matrix is processed.
Invalid Simulink object handle
However, when I run:
set_param('modelName','SimulationCommand', 'update')
it runs the command and does not produce any comments in the command window.
Two questions:
  1. do you know why running the set_param() command with my modelName NOT in quotes does what I want it to do but throws the invalid simulink object handle?
  2. Is there a way to get the output of set_param() with my ModelName in quotes to produce an output in the command window?
Thanks for your help!

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Azzi Abdelmalek
Azzi Abdelmalek 2013-7-12
  1 个评论
Rednar
Rednar 2013-7-12
My simulation is fine and the problem with the time it takes to compile is that I use complex blocks for brain signal recording and bandpower extraction, but I don't mind the time it takes to compile, I'm just wondering if there's a way to do that compilation of the model beforehand and then run the simulation immediately when I command it?

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