How to pass a changing value from workspaces to Simulink?

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?

[Ameer Hamza]

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

Answer 1

[Ameer Hamza]

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.

[Andrea Strappato]

Thank you for the clear answer and the Simulink model provided as an example. Now it works!!!

Thank you so much!

[Ameer Hamza]

I am glad to be of help!

[zahra hosaini]

OMG

this actualy works!

i have been looking for a week

thank you very much for the answer