How to pass a changing value from workspaces to Simulink?

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Andrea Strappato 2020-5-27

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评论： zahra hosaini 2021-9-7

Hi everyone,

I'm trying to pass a value from workspaces to Simulink calculated by Matlab step-by-step. This value changes each step, but the Simulink simulation take the first value and keep it costant. I'm using simin block and doesn't refresh data. How can I solve this issue?

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Ameer Hamza 2020-5-28

How is value changing in base workspace? Are you running a loop which changes the value of the variable?

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Ameer Hamza 2020-5-28

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编辑：Ameer Hamza 2020-5-28

sim_model.mdl

If the value is continually changing in the base workspace, you need to use MATLAB function block and evalin() to read the updated value at each time-step. See the attached file (saved in R2020a). It reads the value of variable 'x' from base-workspace.