資源簡(jiǎn)介
包內(nèi)包含主元分析算法(PCA)的Matlab完整故障診斷程序,附詳細(xì)的word文檔和PPT介紹

代碼片段和文件信息
function?[contributionT2SPEt2cls_cl]?=??PCA_model(XtrainXtest)
X_mean?=?mean(Xtrain);????????????????
X_std?=?std(Xtrain);???????????????????
[X_row?X_col]=?size(Xtrain);?
for?i?=?1:X_col
????Xtrain(:i)?=?(Xtrain(:i)-X_mean(i))./X_std(i);
????Xtest(:i)?=?(Xtest(:i)-X_mean(i))./X_std(i);
end
[USV]=svd(Xtrain./sqrt(size(Xtrain1)-1)0);????????
D=?S^2;
lamda=diag(D);
num_pc=1;
while?sum(lamda(1:num_pc))/sum(lamda)<0.9
????num_pc=num_pc+1;
end
D=diag(lamda);
P=V(:1:num_pc);
[ab]=size(Xtest);
[ry]=size(P*P‘);
I=eye(ry);
e=Xtest*(I-P*P‘);
for?i=1:a??
T2(i)=Xtest(i:)*P*inv(D(1:num_pc1:num_pc))*P‘*Xtest(i:)‘;
end
for?l=1:a
????SPE(l)=e(l:)*e(l:)‘;
end
?for?j=1:b
????contribution(j)=(norm(e(:j)))^2;
?end
?
?t2cl=num_pc*(X_row-1)*(X_row+1)*icdf(‘f‘0.99num_pcX_row-num_pc)/(X_row*(X_row-num_pc));
for?i=1:3
?????theta(i)=trace((D(num_pc+1:X_colnum_pc+1:X_col))^i);????????
end
%?另一種SPE控制線算法
%?h=(theta(1)^2)/theta(2);
%?g=theta(2)/theta(1);
%?conf=0.95;??????????????????????????????
%?df=round(h);???????????????????????????
%?delta2a1=g*pinv(df2);
h0=1-2*theta(1)*theta(3)/(3*theta(2)^2);
ca=icdf(‘norm‘0.9901);
s_cl=theta(1)*(ca*sqrt(2*theta(2)*h0^2)/theta(1)+1+theta(2)*h0*(h0-1)/theta(1)^2)^(1/h0);
?屬性????????????大小?????日期????時(shí)間???名稱
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?????文件?????949248??2013-06-24?15:26??基于主元分析算法的系統(tǒng)故障診斷\gz.xls
?????文件???????1288??2013-06-24?15:26??基于主元分析算法的系統(tǒng)故障診斷\PCA_model.m
?????文件????????490??2014-06-15?19:06??基于主元分析算法的系統(tǒng)故障診斷\testPCA.m
?????文件?????949248??2013-06-24?15:26??基于主元分析算法的系統(tǒng)故障診斷\zc.xls
?????文件?????219454??2018-12-09?14:28??基于主元分析算法的系統(tǒng)故障診斷\故障診斷.doc
?????文件?????928255??2019-02-21?20:17??基于主元分析算法的系統(tǒng)故障診斷\故障診斷.pptx
?????目錄??????????0??2019-02-21?20:17??基于主元分析算法的系統(tǒng)故障診斷
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