MATLAB Answers

0

How to execute multiple optimized values for x according to n, using fmincon

Asked by Maheen Fazal on 17 May 2019
Latest activity Commented on by Maheen Fazal on 17 May 2019
Hello, kindly help me in finding n optimal values for x (x is a vector not single valued).
e.g. i have the main code
function Rsum Simple(x)
global n
R=20*1000;
Rn =x*R;
Rsum=sum(Rn);
end
by using fmincon i am optimizing x
clear all
clc
global n
n_vec=2:2:6;
throughput=[];
for n=n_vec
initial_guess=0.00002;
x0=initial_guess;
lb=0;
ub=0.7;
A = [];
b = [];
Aeq=[];
Beq=[];
[x,fval]= fmincon(@(x) Simple(x),x0,A,b,[],[],lb,ub);
max=-(fval);
throughput=[throughput max];
end
after executing first attempt i want to get 2 optimized values of x,in 2nd i need 4 optimized values and in 3rd time x=6, but i dont know how to execute it. can any body help me out to find multiple values of x(with respect to n).??
thank you in advance

  0 Comments

Sign in to comment.

3 Answers

Answer by Titus Edelhofer on 17 May 2019
Edited by Titus Edelhofer on 17 May 2019
 Accepted Answer

Hi,
there are a couple of things I don't understand: you say "x is a vector"? But you always start with x0=initial_guess, which is a scalar. Perhaps this is the first change you would need to do:
x0 = repmat(initial_val, n, 1);
to make x0 a vector.
Second, your objective function is strange. Variable S is not used? x = [0...0] is the solution for the function you wrote.
Titus

  1 Comments

Sorry it was by mistakenly wrriten, okay Sir will changes in initial guess.

Sign in to comment.


Answer by Maheen Fazal on 17 May 2019
Edited by Maheen Fazal on 17 May 2019

just let me know if i have to find n optimal values for x then how could i find?

  0 Comments

Sign in to comment.


Answer by Maheen Fazal on 17 May 2019

can i also change uper and lower bounds accordingly?

  2 Comments

for i=1:n
[x(i),fval(i)]= fmincon(@(x) Simple(x),x0(i,:),A,b,[],[],lb(i,:),ub(i,:),@constraint);
end
is this a right way to execute?

Sign in to comment.



Translated by