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经验模式分解(EMD)和希尔伯特-黄变换(HHT)
2022-06-22 05:43:00 【studyer_domi】
1、内容简介
略
329-可以交流、咨询、答疑
2、内容说明
略
具体介绍见参考
3、仿真分析
clc
close all
clear
data = xlsread('X.xlsx');
fs = 8000;
t = 0:1/fs:(length(data)-1)/fs;
figure(100)
plot(t,data)
xlabel('时间/s');ylabel('幅值');
[t_x,frequency_x,f_spectrum_x]=fft_s(data,0.5,fs); % 绘制时间频率幅值图
figure(101),surf(t_x,frequency_x,f_spectrum_x); % 绘图
shading interp;
xlabel('时间/s');ylabel('频率/Hz');zlabel('幅值');title 信号
imf = emd(data); % 经验分解
M = length(imf);
N = length(data);
for i = 1:M
figure(i)
plot(t,imf{i})
xlabel('时间/s');ylabel('幅值');
end



4、参考论文
经验模式分解(EMD)及希尔伯特-黄变换(HHT)简介及matlab实现_一弦-sring的博客-CSDN博客_hht变换的matlab实现
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