Using a MATLAB function-block in Simulink to generate random numbers
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I've tried to both google this question and search among the questions and answers here, but I've found no definitve answer to my question so I'm making a new one. Hopefully it won't be too much trouble!
I'm creating a simulation in Simulink where I have a "MATLAB function"-block that is supposed to take input from another source (we can consider this source a "Constant"-block) and then apply a random number that is generated from the MATLAB function-block on the input.
My problem is that I get the exact same randomized numbers every single time I run the Simulink simulation. And I was wondering if someone could help me solve my problem?
Here is the code (not all of it, but all of it that matters):
% function MC_output = randomizer(Stat_input)
minrand = 0.1;
maxrand = 1.9;
points = 10;
rand_numbers = Stat_input*minrand + rand(1, points).*(maxrand-minrand);
MC_output = mean(rand_numbers);
I've read about this solution, but it doesn't work for me
In different ways but with no success. Some help would be greatly appriciated! Oh, and btw, I'm using MATLAB R2012a.
Thanks in advance, Niklas