Dynamic system using ode45
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Michelle Westin
el 20 de Abr. de 2020
Comentada: Michelle Westin
el 21 de Abr. de 2020
Hi,
I need to solve the following function:
function X2d = dynamics(h,theta,beta,hd,thetad,betad,Mt,Ct,Kt,hdd,thetadd,betadd)
X = [h;theta;beta;hd;thetad;betad;hdd;thetadd;betadd];
h = X(1);
theta = X(2);
beta = X(3);
hd = X(4);
thetad = X(5);
betad = X(6);
hdd = X(7);
thetadd = X(8);
betadd = X(9);
X1 = [X(1);X(2);X(3)];
X2 = [X(4);X(5);X(6)];
X2d = [X(7);X(8);X(9)];
X2d = inv(Mt)*(-Ct*X2-Kt*X1);
end
Where d are dot, so it is a system of differential equations.
How can I solve this? May I use ode45?
Thanks
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Respuesta aceptada
Muthu
el 20 de Abr. de 2020
Editada: Muthu
el 20 de Abr. de 2020
You first need to convert this function into a form, which can be passed in ode45
To solve using ode45, you need to have three important inputs -> @equation, timerange, initial condition, options
hence your equation should begin like:
function X2d = dynamics(t, Y, options):
Y contains all the initial conditions of the variables.
options contain the arguements that you might need to pass in.
define the constants inside the function.
Then proceed with your code.
Good luck.
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