Hi,
im new to Simulink so please be easy on me with u'r answers.
I need to generate a number with in the [1,5] values and i need the number to be different every simulation, is there any comand to generate a random seed and not get the same seed every simulation.
I know i can change the seed manual in the random blook, but this is not a good solution for my problem, i need the random to be "Monte Carlo" style.

Thank you.

There is a simulink block named random number. It is in the simulink sources library.

Sorry but your idea didnt work,
I made a simple simulation that has only a random number block and a scope , I ran the simulation 3 times, each time the scope had shown the same 3 numbers.
What i need is that in every simulation i'll get different numbers.

Thank you.

Ok, you can use the matlab function block and then the function rand or randn. It gives different results for different simulations.

Hi,
im sorry but like ur last solution this one didnt work as well.
I made a simple simulation that has an embedded matlab function blook
and a scope, the matlab funtion i wrote was :
function y = fcn()
% This block supports the Embedded MATLAB subset.
% See the help menu for details.

y = rand(1);
//end of function

The scope had shown me the same result in each simulation i ran.

Thank you.

Not the embedded matlab function, even if I think that it has to work well, but MATLAB function, and in the properties of the block you have to specify "rand" or "randn".
I try this

constant (1) --> Matlab function (rand) --> scope.

It gives me always different values

Thank you, this solution is what i was looking for.
:)

I'm glad I could help!