ga_ex33.m

书籍代码:遗传演算法原理与应用_活用MATLAB(Source Code)

% GA_ex33.m file
% [Kp Ki Kd] values for a PID control system

% PenChen Chou, 7-8-2001

%**********************************************************/
%       User can modify the following in blocks
%**********************************************************/
global MIN_offset MUL_factor ROBUST Kp Ki Kd K a1 a2

MIN_offset=3000; % For finding MIN value
MUL_factor=1; 
ROBUST=1;
obj_fcn = 'GA_f33';	% Objective function
%          Kp    Ki   Kd    
range = [ 10   0.01  0.01  
          70   0.5   0.5 ];
IC=[]; elite=1; 
if ROBUST==0
    gen_no=10;
else    
    gen_no=20;
end;    
popuSize=20;
bit_n=30;
xover_rate=0.9;
mutate_rate=0.03;
%************************************************************
% call GA written by Chang
tic
%GA_genetic(obj_fcn, range, IC, elite,...
% gen_no, popuSize, bit_n, xover_rate, mutate_rate);
[popu, popu_real, fcn_value, upper, average, lower, ...
BEST_popu, popuSize, gen_no] = GA_genetic(obj_fcn, range,...
        IC, elite, gen_no, popuSize, bit_n,...
        xover_rate, mutate_rate);
t=toc/60;
fprintf('==>  Computation time is (%.2f) minutes.\n',t);