How to load a variable to simulink at the first model run only?

Question

Amr 2023-12-15

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2060952-how-to-load-a-variable-to-simulink-at-the-first-model-run-only

评论： Amr 2023-12-15

I have a large lookup table in Simulink. Each time I run the model, it took around two minutes in the compilation phase even the simulation itself is so fast. When I comment the table, the compilation phase is so fast. So, i guss it uploads the tabel data in that time.

i'm woundring if there is a way to upload this table data in simulink one time only at the beginnign and continue using it without re-uploading.

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Answer 1

atharva 2023-12-15

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https://ww2.mathworks.cn/matlabcentral/answers/2060952-how-to-load-a-variable-to-simulink-at-the-first-model-run-only#answer_1372177

Hey Amr,

I understand that you want to to upload your table data in simulink one time only at the beginning and continue using it without re-uploading.

Yes, you can use the "From File" block in Simulink to load the lookup table data from a file at the beginning of the simulation. This way, the data will be loaded only once and can be used throughout the simulation without re-uploading. You can use the "MAT-file" option in the "From File" block to load the data from a .mat file.

You can go through the official mathworks documentation for better understanding

https://www.mathworks.com/help/simulink/ug/load-data-using-the-from-file-block.html

I hope this helps!

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Amr 2023-12-15

thanks for your answer.

actually using this block will need to upload the file each time the simulation starts.

I found something that solved it. By using the Fast Restart mode. In that case, the model is compiled only one time and as long as the structure is not changed, no need to do compilation again.

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