%%?清空環境變量
close?all;
clear;
clc;
format?compact;
%%?狀態數據提取
N=2048;
fs=12000;
z1=load（‘Normal_0.mat‘）;
z2=load（‘B007-0.mat‘）;
z3=load（‘IR007-0.mat‘）;
z4=load（‘OR007@6-0.mat‘）;
N=50;????????????????????????????????%每種狀態下樣本個數
M=4*N;???????????????????????????????%總體樣本個數
for?i=0:N-1
????x1（i+1:）=（z1.X097_DE_time（1+10*i:2048+10*i））‘;
????x2（i+1:）=（z2.X118_DE_time（1+10*i:2048+10*i））‘;
????x3（i+1:）=（z3.X105_DE_time（1+10*i:2048+10*i））‘;
????x4（i+1:）=（z4.X130_DE_time（1+10*i:2048+10*i））‘;
end
x=[x1
????x2
????x3
????x4];???????????????????????????%生成4*50個樣本
%%?時域特征參數的提取
for?i=1:M
????dt（i1）=var（x（i:））;?????????????%方差
????dt（i2）=std（x（i:））;?????????????%均方值
????dt（i3）=rms（x（i:））;?????????????%均方根值
????dt（i4）=skewness（x（i:））;????????%偏度
????dt（i5）=kurtosis（x

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

?????文件????3903344??2013-12-05?18:08??t-f-extraction-text\97.mat

?????文件????2908440??2013-12-05?21:27??t-f-extraction-text\B007-0.mat

?????文件????2937304??2013-12-05?21:26??t-f-extraction-text\IR007-0.mat

?????文件????2908440??2013-12-05?21:28??t-f-extraction-text\OR007@6-0.mat

?????文件???????2537??2015-05-27?11:46??t-f-extraction-text\t-f-extraction-text.m

?????目錄??????????0??2015-07-26?09:32??t-f-extraction-text

-----------?---------??----------?-----??----

?????????????12660065????????????????????6