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MUNKHBOLOR BAIGALI on 10 Sep 2020
Hello, I want to calculate any function using PSO algorithm.
ex: Sphere m-file is good working. BUT myfunc is not working. please show in below images
m-file :
function z = Sphere(x)
z = sum(x.^2);
end
PSO code: call Sphere m-file
Result:
?????? BUT 'myfunc' is not answered.
m-file : myfunc
function [Tc, P] = myfunc ()
Ppv_rated = 250 ;
G = [5.75, 6, 6.365, 6.5, 6.185, 5.75, 5, 4.8, 5.5, 6.18, 6.15, 5.8 ];
Gref = 1000 ;
Kt = -0.485 ;
Tref = 25 ;
Tamb = [25.63, 26.7, 26.610, 25.46, 24.9, 24.01, 23.16, 23.01, 23.54, 23.78, 24.45, 25.3 ];
x = [0,2,5,7,8,9,10 ] ;
Tc = Tamb + (0.0256 * G ) ;
P = ((Ppv_rated * x) .* ((G/Gref).*(1 + Kt*(Tc - Tref )))')';
end
PSO code: call myfunc
Result:
Please tell me why myfunc is not working in PSO code -------------------------------------------------

Ameer Hamza on 10 Sep 2020
On this line
P = ((Ppv_rated * x) .* ((G/Gref).*(1 + Kt*(Tc - Tref )))')'c % <-- remove this c, it is syntax error in MATLAB.
Remove the 'c' character and replace it with semicolon (;).
Also, right now your function does not take input x, change it like this
function [Tc, P] = myfunc (x)
Ppv_rated = 250 ;
G = [5.75, 6, 6.365, 6.5, 6.185, 5.75, 5, 4.8, 5.5, 6.18, 6.15, 5.8 ];
Gref = 1000 ;
Kt = -0.485 ;
Tref = 25 ;
Tamb = [25.63, 26.7, 26.610, 25.46, 24.9, 24.01, 23.16, 23.01, 23.54, 23.78, 24.45, 25.3 ];
Tc = Tamb + (0.0256 * G ) ;
P = ((Ppv_rated * x) .* ((G/Gref).*(1 + Kt*(Tc - Tref )))')';
end
Ameer Hamza on 10 Sep 2020
The objective function myfunc must return a single number, but it is returning an array. Change myfunc so that it only returns the value of the objective function (a single number).
MUNKHBOLOR BAIGALI on 10 Sep 2020
yes. I understood thank you sir

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