rand returns me the same numbers on Simulink?
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Teng Da Wen
el 23 de Jun. de 2020
Comentada: Teng Da Wen
el 23 de Jun. de 2020
Hello,
I'm making a simulation of how much time is required for an Item to get through some Workstation, and I wanted to give some kind of randomness to worktime, I tried by using a Matlab action service time source, and having a minimum Worktime on which is added the max delay the station can have multiplied for a rand(1) function (as shown below).
However running the simulation multiple times I noticed the value of service time that is returned is always the same, what am I doing wrong? how should I solve it?
Thanks in advance
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/320875/image.png)
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Reeshabh Kumar Ranjan
el 23 de Jun. de 2020
Hey Teng,
I think this might be the reason of repetition of numbers: https://in.mathworks.com/help/matlab/math/why-do-random-numbers-repeat-after-startup.html
See if it solves your problem.
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