ode45 is returning the incorrect solution
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I am running an ode45 to solve a simple intergration. The intergration is so simple I can perform it by hand - hence knowing the solution returned is excessively large.
function [Output] = ContinuousFeed(t,u)
uA = u(1);
uB = u(2);
uE = u(3);
uF = u(4);
u = [uA; uB; uE; uF];
Output = u;
end
t=[0 10];
u0 = [1; 0.0002; 0; 0];
[t, u] = ode45 (@ContinuousFeed, t ,u0);
Why is it returning a final value of 22030.53 for the first column? All other columns are displaying inaccurate answers also.
Thank you!
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Ameer Hamza
2020-3-17
编辑:Ameer Hamza
2020-3-17
The MATLAB is giving the correct solution. You are solving four independent ODEs of the form
which have an anatylical solution
The solution of ode45 matches this analytical solution.
7 个评论
Ameer Hamza
2020-3-17
If my initial feed you meant initial conditions, then this is the expected behavior. Vector u0 tells the ode45 where to start the solution of each variable.
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