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how should I add output of both oscillator and plot it?

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Aniket
Aniket 2013-2-10
hello , i am trying to implement multiple oscillators and simulating.
how should I add output of both oscillator and plot it?
should i write dz = zeros(3,1) or dz = zeros(6,1) ?
my code is
***************
oscillator function
*****************************
function dz = myeqd(t,y,ti,xx)
dz = zeros(3,1);
mu = 0.3;
r= sqrt(y(1)^2 + y(2)^2);
K1=500;
K2 = 500;
K3 = 500 ;
F=interp1(ti,xx,t);
%osc1
dz(1)= (mu - r^2)*y(1) - y(3)*y(2) +K1*F;
dz(2) = (mu - r^2)*y(2) + y(3)*y(1);
dz(3) = (-K1*F) * (y(2)/sqrt(y(1)^2 + y(2)^2));
%osc2
dz(4)= (mu - r^2)*y(4) - y(6)*y(5) +K2*F;
dz(5) = (mu- r^2)*y(5) + y(6)*y(4);
dz(6) = (-K2*F) * (y(5)/sqrt(y(4)^2 + y(5)^2));
******************************************************
mian code
**************************************
time = 0:0.001:20;
xx = chirp(time,100,10,400);
ti=time;
[T,Y]=ode45(@(t,y) myeqd(t,y,ti,xx),time,[5;5;90]);
plot (T,Y(:,3));
********************************************

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采纳的回答

Azzi Abdelmalek
Azzi Abdelmalek 2013-2-10
From your function, you should write
dz = zeros(6,1)
  1 个评论
Aniket
Aniket 2013-2-10
编辑：Aniket 2013-2-11
Thanks, and how should i add output of all oscillators.
for example the output is coming at the third vector of Y that is Y(:,3)
so should i add like this ?
e = Y(:,3) + Y(:,6);
plot (T,e)

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