MATLAB: Storing eigenvalues from a loop

eigenvaluesloopspace-statestoring values

Hi everyone,

I have made a code that finds a space-state system matrix A and finds its eigenvalues for one specified parameter (call it U) that is predefined and its a part of matrix A.

Now I want to create a loop that will allow me to vary U (lets say from U=220 to U=250) and then calculate eigenvalues for each U. I am having a trouble writing the code that will store these eigenvalues after each iteration.

Any help is appreciated, Thank you 🙂

Best Answer

Can I have your code?

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MATLAB: How to simulate a complex-valued space state system in simulink or by command

a=[ 0.364-0.0489i   0.771+0.0254i  0.00995
 -1.28-0.0988i   0.538+0.0514i  0.01
 -1.3-0.0998i  -0.467+0.0519i  0]    
b=[0.49;0.99;1]
c=[1   0   0]
d=0
t=0:h:50;
U=0.5*square(t/10,50)'
xsim=ltitr(a,b,U)

U should be a column vector

Or, you can also use lsim

system1=ss(a,b,c,d,1)
[output,time,state2]=lsim(system1,U,t)

MATLAB: Creating loop and storing eigenvalues from random matrices

many_times = 100;
all_v = zeros(2, many_times);
for K = 1 : many_times 
  a = -1+2*rand;
  A = [rand a; a rand];
  v = eig(A);
  all_v(:, K) = v;
end

Best Answer

Related Solutions

MATLAB: How to simulate a complex-valued space state system in simulink or by command

MATLAB: Creating loop and storing eigenvalues from random matrices

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