How to solve Differential Equation in Simulink Model

Hi, How to write this model into simulink :

{ dv/dt = -4.5 - 0.42v - 0.334v^2 }

 I was unable how to write when model include 0.334v^2.
 Someone pls help me.

 tq...

Answer 1

[Arnaud Miege]

Use the Math Function block, and select square as the function. Once you have calculated dv/dt, you can then use the integrator block to calculate v and feed it back to the RHS of the equation.

HTH,

Arnaud

Answer 2

[Rizuwan Mustaffa]

tq....Arnauld, sorry for late reply....