how to generate chirp signal ?

3 views (last 30 days)
Aniket
Aniket on 24 Jan 2013
How to generate chirp signal for this scenario?
Hello , i have adaptive oscillator matlab code .
****************************
function dz = myeqd(t,y,ti,fi)
dz = zeros(3,1);
mu=0.7;
r= sqrt(y(1)^2 + y(2)^2);
K=2;
%w=40;
F=interp1(ti,fi,t);
dz(1)= (mu - r^2)*y(1) - y(3)*y(2) +K*F;
dz(2) = (mu - r^2)*y(2) + y(3)*y(1);
dz(3) = (-K*F) * (y(2)/sqrt(y(1)^2 + y(2)^2));
**************************************
then call this function
************************************
Tspan= 0:0.01:500; % time vector
fi = cos(10*Tspan)+ 0.1*randn(1,numel(Tspan));
ti=Tspan;
[T,Y]=ode45(@(t,y) myeqd(t,y,ti,fi),Tspan,[1;1;30]);
plot (T,Y(:,3))
****************************
In the above code i am giving fi = cos(10*Tspan)+ 0.1*randn(1,numel(Tspan)) external input signal but instead of this I want to test this code for Chirp signal as an external input and i am not getting how to give chirp signal .
any one can help me
thank you

Accepted Answer

Sachin Ganjare
Sachin Ganjare on 24 Jan 2013
Use matlab "chirp" function.

More Answers (0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!