clear
clc
n?=?50;???????????%?粒子群規模
bird_setp??=50;???%?最大迭代次數
dim?=?3;??????????%?維數

c2?=2;????????%?加速常數1
c1?=2;????????%?加速常數2?
w?=0.9;???????????%?慣性權重?
fitness=0*ones（nbird_setp）;????????????????????????????????
???????????????????????????????????????%??初始化粒子群
R1?=?rand（dim?n）;
R2?=?rand（dim?n）;
current_fitness?=0*ones（n1）;
?????????????????????????????????%?初始化群體位置和速度
current_position?=?10*（rand（dim?n）-.5）;
velocity?=?.3*randn（dim?n）?;
local_best_position??=?current_position?;
?????????????????????????????????%?個體評估??????
for?i?=?1:n
????current_fitness（i）?=?tracklsq（current_position（:i））;????
end

local_best_fitness??=?current_fitness?;
[global_best_fitnessg]?=?min（local_best_fitness）?;

for?i=1:n
????globl_best_position（:i）?=?local_best_position（:g）?;
end
???????????????????????????????????????????????%??速度更新
velocity?=?w?*velocity?+?c1*（R1.*（local_best_position-current_position））?+?c2*（R2.*（globl_best_position-current_position））;

???????????????????????????????????????????????%??群體更新
current_position?=?current_position?+?velocity?;
???????????????????????????????????????????????%??群體跟新評估???
%%?主體循環，迭代尋優
iter?=?0?;??
while??（?iter?iter?=?iter?+?1;

for?i?=?1:n
current_fitness（i）?=?tracklsq（current_position（:i））?;????
end


for?i?=?1?:?n
????????if?current_fitness（i）????????????local_best_fitness（i）??=?current_fitness（i）;??
???????????local_best_position（:i）?=?current_position（:i）???;
????????end???
?end

??
?[current_global_best_fitnessg]?=?min（local_best_fitness）;
??
????
if?current_global_best_fitness????global_best_fitness?=?current_global_best_fitness;
???
????for?i=1:n
????????globl_best_position（:i）?=?local_best_position（:g）;
????end
???
end


?velocity?=?w?*velocity?+?c1*（R1.*（local_best_position-current_position））?+?c2*（R2.*（globl_best_position-current_position））;
?current_position?=?current_position?+?velocity;?
??
?sprintf（‘The?value?of?interation?iter?%3.0f?‘?iter?）;


end
%?結束
??????????????????????

????????????xx=fitness（:50）;
????????????[YI]?=?min（xx）;
????????????current_position（:I）

???????????????


????

%??????????
?????????

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????14694??2008-06-11?20:03??粒子群算法優化pid源碼?matlab仿真\html\PSO.html

?????文件???????2679??2008-06-11?20:03??粒子群算法優化pid源碼?matlab仿真\html\PSO.png

?????文件???????4307??2008-06-11?19:59??粒子群算法優化pid源碼?matlab仿真\html\PSO_01.png

?????文件???????4671??2008-06-11?20:03??粒子群算法優化pid源碼?matlab仿真\html\PSO_02.png

?????文件??????35168??2015-05-17?19:58??粒子群算法優化pid源碼?matlab仿真\optsim1.mdl

?????文件??????29696??2008-01-18?21:25??粒子群算法優化pid源碼?matlab仿真\optsim1.mdl.r2006a

?????文件???????2329??2015-05-17?21:15??粒子群算法優化pid源碼?matlab仿真\PSO.m

?????文件????????590??2015-05-17?21:36??粒子群算法優化pid源碼?matlab仿真\tracklsq.m

?????目錄??????????0??2015-05-17?20:00??粒子群算法優化pid源碼?matlab仿真\html

?????目錄??????????0??2015-05-17?21:37??粒子群算法優化pid源碼?matlab仿真

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????????????????94134????????????????????10