Some variables not being shown in workspace
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I am implementing an optimisation heuristic algorithm in matlab. When I run it, some of the variables are not coming up in workspace. When I run that variable (say xyz) from Command window, it says undefined variable xyz. Though I can see that variable xyz is defined in the program. Program was running well until day before yesterday but suddenly why are such problems coming. Why is this happening? The program is attached
clc;
clear;
close all;
INITIAL PARAMETERE VALUE
N=5;TS=100;LB=[1 0.1 0.1 0.1 0.1];UB=[50 30 25 0.99 0.99];ITER=2000;
Costfunction= @pidisefrac2;
INITIAL POPULATION
Individual.Position=zeros(1,N);
Individual.Cost=zeros(1,1);
Pop=repmat(Individual,TS,1);
for i=1:TS
for j=1:5
Pop(i).Position(j)=unifrnd(LB(j),UB(j),1,1);
end
Pop(i).Cost=Costfunction(Pop(i).Position);
end
EVALOTUNARY SECTION
for i=1:ITER
for j=1:N
sum1=0;
sum2=0;
for k=1:TS
sum1=sum1+Pop(k).Position(j)*(1/Pop(k).Cost);
sum2=sum2+1/Pop(k).Cost;
end
Center(j)=sum1/sum2;
end
for j = 1:5
c=(0.5*(UB-LB))/(1+ITER/10);
end
for k=1:TS-1
for j= 1:5
Pop(k).Position(j)=Center(j)+c(j)*normrnd(0,1,1,1);
end
for j=1:N
if Pop(k).Position(j)<LB
Pop(k).Position(j)=LB;
end
if Pop(k).Position(j)>UB
Pop(k).Position(j)=UB;
end
end
Pop(k).Cost=Costfunction(Pop(k).Position);
end
Pop(end).Position=Center;
Pop(end).Cost=Costfunction(Center);
Costs=[Pop.Cost];
[BestCost(i) index] = min(Costs)
BestmPosn (i,:) = Pop(index).Position;
end
RESULT
Costs=[Pop.Cost];
BestCost = min(Costs)
pidisefrac2.m
function ise = pidisefrac2(x)
sys = fotf([0.08 1.88 0],[2 1 0],[1.8],[0]);
pidi = fotf([1 0],[x(4) 1],[x(3) x(1) x(2)],[x(4)+x(5) x(4) 0]);
sysnew = sys*pidi;
final = feedback(sysnew,1);
%finalWithoutPID = tf([0.01125],[0.0005 0.01175 0.01125]);
[y t]=step(final,0:0.001:10);
ac =stepinfo(y,t,1);
% step(final)
for i = 1:101
error(i) =1 - y(i);
end
error1=error*error';
ise=abs(sum(error1));
7 个评论
Stephen23
2017-8-18
编辑:Stephen23
2017-8-18
I do not have the FOTF toolbox which you seem to be using, but when I replace the cost function with:
Costfunction = @(varargin)1;
then the script runs without error, and returns:
BestCost =
1
>> BestmPosn
BestmPosn =
25.587 16.222 13.446 0.50843 0.51146
25.423 16.34 13.621 0.50816 0.51123
25.631 16.285 13.56 0.50519 0.51467
25.42 16.233 13.448 0.50802 0.51374
25.414 16.294 13.555 0.50112 0.51198
25.436 16.287 13.507 0.50512 0.51118
etc.
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