Help Using Simulink tp draw ODE
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Hi,
I was wondering if someone could help me create a basic differential equation in Simulink. I'm trying to create the following equations
I tried using this as an example ODE to help me solve this problem but it doesn't seem to help. The link above has a very similar ODE. When I create two of what is done in the example and try and connect it to a XY Graph I don't get anything so I'm doing something wrong but am not sure what. Thanks for any help.
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Mischa Kim
am 3 Feb. 2014
Dylan, the basic structure looks like this:
Try using an embedded MATLAB function to compute the state derivative
function Xdot = fcn(X, u)
Xdot = [0; 0];
x = X(1);
y = X(2);
Xdot = [y*u; -x*u];
end
As a final note, make sure to adjust the limits in the XY Graph according to the signal outputs.
1 Kommentar
Mischa Kim
am 3 Feb. 2014
Double-click the integrator block and add the intial conditions, e.g., [1; 1] ;
Dylan
am 3 Feb. 2014
1 Kommentar
Mischa Kim
am 4 Feb. 2014
Dylan, could you please post follow-up questions as comments? Did you get it to work with setting the initial conditions? See comment on top.
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