How do i model a non linear differential equation in simulink?

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Karl-JR 2023-6-15

评论： Karl-JR 2023-6-16

Hello everyone

i´m new to simulink and trying to get accustomed to the platform. i am trying to model this in simulink:

and this is all i have so far

i don´t know how to proceed further. Can somebody help me?

Nitya Patel 2023-6-16

Can you tell me what

is?

Karl-JR 2023-6-16

oh sorry, it´s "σ"

Pramil 2023-6-16

编辑：Pramil 2023-6-16

Taking u(t) as unit step, you can shift x'''(t) one side and u^2(t) to the other and try the following :

where fcn is Matlab function block, having function :

function y = fcn(u)
y = u/(u^2+1);

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