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

Question

MUNKHBOLOR BAIGALI 2020-9-10

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/591496-i-want-to-calculate-any-function-using-pso-algorithm-but-it-doesn-t-work-please-help

评论： MUNKHBOLOR BAIGALI 2020-9-10

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 -------------------------------------------------

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Ameer Hamza 2020-9-10

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/591496-i-want-to-calculate-any-function-using-pso-algorithm-but-it-doesn-t-work-please-help#answer_492403

在 MATLAB Online 中打开

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

5 个评论
显示 3更早的评论隐藏 3更早的评论

Ameer Hamza 2020-9-10

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 2020-9-10