I want to calculate any function using PSO algorithm. but It doesn't work. please help

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:

The 'Sphere' function answered.

?????? 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 -------------------------------------------------

Answer 1

[Ameer Hamza]

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

[MUNKHBOLOR BAIGALI]

Thank you SIr for reply my question.

But it didn't work

[Ameer Hamza]

What is the error?

[MUNKHBOLOR BAIGALI]

I wrote----m-file

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

result is

How do I do? Sir

[Ameer Hamza]

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]

yes. I understood thank you sir