Why do I get a different response when using the "step" command in the command line and the scope in Simulink?

I have a MIMO (10 outputs and 5 inputs) state transition matrix I don't understand why do I get different responses when invoking a step input in the command line and in Simulink. Can someone give me a light on this?

Answer 1

[Birdman]

It is because of the solver. In Simulink, you probably use variable step solver, which is more accurate. In MATLAB Command line, you can overcome this situation by making the simulation with a small step size that you define, so you will get more accurate results.

t = 0:1e-6:10;
step('your model',t)

Try the code above.

[Mr. NailGuy]

Thanks for the answer. I will stick to the simulink then.

[Birdman]

It is up to you. The code above is to improve the performance of the step function in command line.