How can I create a multistep function with variable number of steps in simulink?

I am running a simulation in simulink that requires me to change the value of a constant block during the simulation. If I have an array of of all of the values i want to use, how can I have it change from value to value based on the time of the simulation ? I have tried using the clock and floor function, this will return an integer that I can use to reference the element of the array . However, the index of the array in the constant block does not appear to be able to change. Can anyone help with this? See attached MATLAB code for a visual description of the problem.

Answer 1

[Nikhil Negi]

Hello Evan,

You can use a selector block to select different elements of a vector. I've modified your example you can see it and also read about selector block to modify it according to your needs.

[Evan Tsiklidis]

Works great, thanks!

Answer 2

[Sviatoslav Klos]

I can suggest to use some manualization of running simulink.

You can create some kind of 'for' or 'while' cycle with command

set_param('vdp','SimulationCommand','stepforward')

% update constant block variable

cont1=array(1,i);

set_param('modelName','SimulationCommand','update')

end

This may solve your issue.

You may read more about commands here - https://www.mathworks.com/help/simulink/ug/using-the-sim-command.html