Andersonwilliams asked . 2020-04-29

Accessing variables from workspace into user-created function block in Simulink?

As the title suggests, I defined some variable say, x in the workspace that has a number.
Using MATLAB function, I am trying to import that variable (just once!) and as simulation progress, under
certain condition, I want to increment that variable. However, since the function does not 'see' the variable x,
I end up declaring that variable inside the MATLAB Function Block. However, this keeps initializing the variable
and thus, I cannot increment it.
I need help to resolve this problem!

matlab, simulink, simulation

Expert Answer

Neeta Dsouza answered . 2024-12-21 14:43:57

You can declare your variable as persistent

function y=fcn(u)
persistent v
if isempty(v)
  v=your_constant
end
v=v+increment


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