Hello,
I want to plot the bode diagram for nonlinear equation. The equation is:
dxdt_2 = -c*x(2)-k*x(1)-b*(x(1)^3)+ F*sin(w*t+phi)
I have used this code:
t = 0:0.001:250;
c = 0.1;
k = 1;
b =0.5;
x0 = 0.1;
v0 = 0.1;
F=0.2;
phi=0;
w=10;
i= 0;
[t,x] = ode45( @rhs, t, [x0,v0]);
function dxdt=rhs(t,x)
dxdt_1 = x(2);
dxdt_2 = -c*x(2)-k*x(1)-b*(x(1)^3)+ F*sin(w*t+phi) ;
dxdt = [dxdt_1 ; dxdt_2];
end
How can I plot the Bode Diagram for this function?
Thank you
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