How to simulate simulink model in a given set of time-points only?

I have a set of time-points in an array and I want the simulink model to run only in the given time-stamps.

The timestep is non-uniform.

Answer 1

[Birdman]

Yes, it is possible. Consider the attached Simulink model which contains a ramp block and its slope parameter is set as 5. Its stop time is 10. We expect to see the output of the ramp at t=0,1,6,9. Run the following code from command line:

t=[0 1 6 9];
y=sim('Rampout',t);
y.RampOut.Signals.Values

The last line will give you 0,5, 30 and 45 which shows that the model is ran at specified time values. You can adapt this to your application.

[Vinayak Dan]

I attached a scope to the simulink model and ran the code in command line.

What I want to see is only values of 0 5 30 and 45 on the scope and the model to not simulate on any other time. That's what my question is.

[Birdman]

But you are seeing those values in command line and don't you want to only see those values? Does it matter where you see those values?

t=[0 1 6 9];
y=sim('Rampout',t);
y.RampOut.Signals.Values

ans =


            0
            5
            30
            45

[Vinayak Dan]

What I meant is that the simulation should happen only at those timestamps. At other time points I want it to hold the previous value.

[Birdman]

Ok then. Try the following code with the attached modified Simulink model:

y=sim('Rampout','StartTime','0','StopTime','0')
y.Rampout.signals.values

y=sim('Rampout','StartTime','1','StopTime','1')
y.Rampout.signals.values

y=sim('Rampout','StartTime','6','StopTime','6')
y.Rampout.signals.values

y=sim('Rampout','StartTime','9','StopTime','9')
y.Rampout.signals.values

If you run each pair of line respectively, you will see the previous results that we obtained.