能源行业(电力石油煤炭)

开发平台：

Matlab

test_TE.asv：源码内容

							global ks;%核函数半径
load x00;
load t02;
ks=50;
train_num = 960;% 训练样本数
fault_num = 800;
variable_num=16;
PCA_num=5;%选取最大主元数
K=2;%KPCA选取最大主元数
%%%%%对建模样本作归一化处理%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
[n,m]=size(x00);
E=mean(x00);
Train=zeros(n,m);
for j=1:m,
   V(j)=0; 
   for i=1:n,
     V(j)=V(j)+(x00(i,j)-E(j))^2;
   end
   V(j)=sqrt(V(j)/(n-1));
   for i=1:n,
       Train(i,j)=(x00(i,j)-E(j))/V(j);
   end 
end
%%%%%对故障测试样本作归一化处理%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 [n1,m1]=size(t02);
 fault=zeros(n1,m1); 
 for j=1:m1,
    for i=1:n1,
        fault(i,j)=(t02(i,j)-E(j))/V(j);
    end 
 end
 %%%%% %主元分析%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  [pc,score,latent,tsquare]=princomp(Train);
  PCA=pc(:,1:PCA_num);
  score_PCA=score(:,1:PCA_num);
  latent_PCA=diag(latent(1:PCA_num));
%%%%% %新测试数据（故障数据）作主元分析%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  PCA_Test=zeros(n1,PCA_num);
  Fault_guji=zeros(n1,m1);
  TT=zeros(1,n1);
  
for i=1:n1,
     for j=1:PCA_num,
       PCA_Test(i,j)=fault(i,:)*PCA(:,j); 
       Fault_guji(i,:)=Fault_guji(i,:)+fault(i,:)*PCA(:,j)*PCA(:,j)';
     end
  %求T2统计
  TT(i)=PCA_Test(i,:)*inv(latent_PCA)*PCA_Test(i,:)';
  %求SPE统计
end 
 Fault_ee=fault-Fault_guji;
  for i=1:n1,
  Fault_SPE(i)=Fault_ee(i,:)*Fault_ee(i,:)';
  end
   figure(1);  
   subplot(2,1,1);
   plot(1:960,TT,1:8:960,20,'k--');
   xlabel('Sample Number');
   ylabel('PCA-T2');
   subplot(2,1,2);
   plot(1:960,Fault_SPE,1:8:960,30,'k--');
   xlabel('Sample Number');
   ylabel('PCA-SPE'); 
%%%%% %Kernel主元分析%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
x00=[x00(1,:); x00(80,:);x00(120,:)];
[tr,meanp,stdp] = prestd(x00');
te = trastd(t02',meanp,stdp);
tr=tr';
te=te';
trd=data(tr);
ted=data(te);
%[r,a]=train(kpca,tr);
[r,a]=train(kpca({kernel('rbf',ks)}),trd);
d=test(a,ted);
val=a.e_val;
vec=a.e_vec;
dvec=d.X;
s=inv(diag(val(1:K)));
for i=1:960
  tsquare(i)=dvec(i,1:K)*s*dvec(i,1:K)';
  SPE(i)=dvec(i,:)*dvec(i,:)'-dvec(i,1:K)*dvec(i,1:K)';
end
figure(2);
subplot(2,1,1);
plot(1:960,tsquare,1:8:960,0.025,'k--');
xlabel('Sample Number(N)');
ylabel('KPCA-T2');
subplot(2,1,2);
plot(1:960,SPE,1:8:960,0.025,'k--');
xlabel('Sample Number(N)');
ylabel('KPCA-SPE');
%[cn,CSPE]=kpcak(te,tr,vec(:,1:K),s,ks);
%figure(3)
subplot(2,1,1);
plot(cn);
xlabel('Sample Number(N)');
ylabel('CT2');
subplot(2,1,2);
plot(CSPE);
xlabel('Sample Number(N)');
ylabel('CSPE');

						