代码搜索：功率谱
找到约 2,083 项符合「功率谱」的源代码
代码结果 2,083
www.eeworm.com/read/489816/6461875
m program_18_04_special.m
%采样频率
fs=10000;
nfft=10240;
%轴承外环故障信号
fid=fopen('bearingout1.dat','r');%故障
N=2048;
xdata=fread(fid,N,'int16');
fclose(fid);
xdata=(xdata-mean(xdata))/std(xdata,1);
%功率谱
figure(1);
Y=abs(fft
www.eeworm.com/read/489816/6461877
m program_18_05_special.m
%采样频率
fs=10000;
nfft=10240;
%轴承滚动体故障信号
fid=fopen('bearingroll2.dat','r');%故障
N=2048;
xdata=fread(fid,N,'int16');
fclose(fid);
xdata=(xdata-mean(xdata))/std(xdata,1);
%功率谱
figure(1);
Y=abs(f
www.eeworm.com/read/264337/11319484
m ppfx.m
function out=ppfx(a,fs)
%a为重构系数输出
%fs为采样频率
aa=length(a);
w=hanning(aa);
[pxx,f]=periodogram(a,w,aa,fs);
plot(f,10*log10(pxx));%画a的功率谱图
Xlabel('f/Hz');
Ylabel('Power Spectral Density(dB/Hz)');
www.eeworm.com/read/156378/11807589
m 例程18-5.m
%采样频率
fs=10000;
nfft=10240;
%轴承滚动体故障信号
fid=fopen('bearingroll2.dat','r');%故障
N=2048;
xdata=fread(fid,N,'int16');
fclose(fid);
xdata=(xdata-mean(xdata))/std(xdata,1);
%功率谱
figure(1);
Y=abs(f
www.eeworm.com/read/156378/11807598
m 例程18-4.m
%采样频率
fs=10000;
nfft=10240;
%轴承外环故障信号
fid=fopen('bearingout1.dat','r');%故障
N=2048;
xdata=fread(fid,N,'int16');
fclose(fid);
xdata=(xdata-mean(xdata))/std(xdata,1);
%功率谱
figure(1);
Y=abs(fft
www.eeworm.com/read/221223/14752954
m 例程18-5.m
%采样频率
fs=10000;
nfft=10240;
%轴承滚动体故障信号
fid=fopen('bearingroll2.dat','r');%故障
N=2048;
xdata=fread(fid,N,'int16');
fclose(fid);
xdata=(xdata-mean(xdata))/std(xdata,1);
%功率谱
figure(1);
Y=abs(f
www.eeworm.com/read/221223/14752964
m 例程18-4.m
%采样频率
fs=10000;
nfft=10240;
%轴承外环故障信号
fid=fopen('bearingout1.dat','r');%故障
N=2048;
xdata=fread(fid,N,'int16');
fclose(fid);
xdata=(xdata-mean(xdata))/std(xdata,1);
%功率谱
figure(1);
Y=abs(fft
www.eeworm.com/read/461648/1552002
m program_18_04_special.m
%采样频率
fs=10000;
nfft=10240;
%轴承外环故障信号
fid=fopen('bearingout1.dat','r');%故障
N=2048;
xdata=fread(fid,N,'int16');
fclose(fid);
xdata=(xdata-mean(xdata))/std(xdata,1);
%功率谱
figure(1);
Y=abs(fft
www.eeworm.com/read/461648/1552004
m program_18_05_special.m
%采样频率
fs=10000;
nfft=10240;
%轴承滚动体故障信号
fid=fopen('bearingroll2.dat','r');%故障
N=2048;
xdata=fread(fid,N,'int16');
fclose(fid);
xdata=(xdata-mean(xdata))/std(xdata,1);
%功率谱
figure(1);
Y=abs(f
www.eeworm.com/read/318233/3571076
m program_18_04_special.m
%采样频率
fs=10000;
nfft=10240;
%轴承外环故障信号
fid=fopen('bearingout1.dat','r');%故障
N=2048;
xdata=fread(fid,N,'int16');
fclose(fid);
xdata=(xdata-mean(xdata))/std(xdata,1);
%功率谱
figure(1);
Y=abs(fft