How can I call a simulink block from matlab editor?

Question

I'm beginner at simulink block. Actually I'm working at time delayed system. I have a simulink block to apply a time varying delay in a signal.

I'm using matlab editor with for loop to define my variables with different values. These variables are the input of the simulink block. I used simto workspace as output. I want to use this output in matlab editor in the same forloop as scalar. How can I modify the dimension of output ? enter image description here

for t=0:0.001:5
   v1=...
   sim(v1delay.slx');
   z=v1delay*A;
end

Phil Goddard Phil Goddard · Accepted Answer · 2019-07-26T22:54:53

Your code is completely inappropriate for what you are trying to achieve. You should read How Simulink Works (and the pages linked off that page) to get a better understanding of what it is and how to use it.

The sim function will simulate your model from the start time to end time (that you have specified in your model, not your variable t) You should not be using it in a loop where you (think you) are incrementing time yourself - the Simulink solver does that for you.

The way you have set up the From Workspace block requires you to define, in MATLAB, a variable called t and another called v1, both of which must be column vectors. (It looks like you also need to define a variable called tauf, although it's not clear what that block is so I can't be sure.)

t=0:0.001:5
v1=...

Specifically note that t is used to define the time points at which v1 changes, it has nothing to do with the time steps taken by the Simulink solver stepping the model through time.

Then you want to run the simulation,

sim('v1delay');

This will generate a variable called v1_delay in the MATLAB Workspace. The To Workspace block allows this to be one of several different data-types. Depending on which one you have selected, you will use slightly different functionality to access the actual numeric data to calculate your z variable.

z=??? % syntax will depend on the data type of v1_delay

How can I call a simulink block from matlab editor?

1 Answers