{"id":1486,"date":"2022-03-20T22:15:12","date_gmt":"2022-03-20T14:15:12","guid":{"rendered":"http:\/\/hk.khscience.cn\/docs\/?p=1486"},"modified":"2024-04-07T21:42:56","modified_gmt":"2024-04-07T13:42:56","slug":"imf","status":"publish","type":"post","link":"https:\/\/www.khsci.com\/docs\/index.php\/2022\/03\/20\/imf\/","title":{"rendered":"IMF\u65b9\u5dee\u8d21\u732e\u7387\u3001\u5e73\u5747\u5468\u671f\u3001\u76f8\u5173\u7cfb\u6570\u7684\u8ba1\u7b97\uff0c\u9ad8\u9891\u3001\u4f4e\u9891\u3001\u8d8b\u52bf\u9879\u5206\u91cf\u5224\u522b\u4e0e\u91cd\u6784\u7a0b\u5e8f\uff08\u516c\u5f00\u7248\uff09"},"content":{"rendered":"\n<h4 class=\"wp-block-heading\" id=\"<strong&gt;\u4e00\u3001\u4ee3\u7801\u8fd0\u884c\u73af\u5883\uff1a<\/strong&gt;\"><strong> \u4e00\u3001\u8fd0\u884c\u73af\u5883<\/strong><\/h4>\n\n\n\n<p class=\"is-style-iw-2em\">MATLAB2018a\u6216\u66f4\u65b0\u7248\u672c\u5df2\u7ecf\u8fc7\u6d4b\u8bd5\uff0c\u4e4b\u524d\u7684\u7248\u672c\u672a\u505a\u6d4b\u8bd5\u3002<\/p>\n\n\n\n<p class=\"is-style-iw-2em\">*\u6ce8\uff1a\u672c\u7a0b\u5e8f\u4e2d\u4f7f\u7528EEMD\u4f5c\u4e3a\u6d4b\u8bd5\u65b9\u6cd5\uff0c\u4f46imfHLdif\u548cimfClc\u7a0b\u5e8f\u5bf9EMD\u3001CEEMD\u3001CEEMDAN\u7b49\u201c\u7c7bEMD\u201d\u65b9\u6cd5\u90fd\u53ef\u4ee5\u9002\u7528\uff08VMD\u548cEWT\u4e0d\u9002\u7528\u4e8e\u9ad8\u3001\u4f4e\u9891\u5224\u522b\u548c\u91cd\u6784\uff09\uff0c\u4f46\u662f\u5c31\u9700\u8981\u540c\u5b66\u4eec\u81ea\u884c\u5728\u7a0b\u5e8f\u4e2d\u505a\u9002\u5e94\u6027\u66ff\u6362\u5566\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"-2e020a48-2727-4f44-aa95-3b311a2b74b2\"><strong>\u4e8c\u3001\u6587\u4ef6\u8bf4\u660e<\/strong><\/h4>\n\n\n<div class=\"wp-block-image aligncenter size-full\">\n<figure class=\"\"><img loading=\"lazy\" decoding=\"async\" width=\"192\" height=\"148\" src=\"https:\/\/khsci.com\/docs\/wp-content\/uploads\/2022\/03\/image-10.png\" alt=\"\" class=\"wp-image-1498\"\/><figcaption class=\"wp-element-caption\">\u6ce8\uff1a<img decoding=\"async\" src=\"https:\/\/khsci.com\/docs\/wp-content\/uploads\/2020\/04\/d2f64ad140f71d4582ec56dfb0893b44.png\">\u56fe\u6807\u4ee3\u8868\u8be5m\u6587\u4ef6\u4e3a\u811a\u672c\u6587\u4ef6\uff0c\u53ef\u4ee5\u76f4\u63a5\u8fd0\u884c\uff1b<img decoding=\"async\" src=\"https:\/\/khsci.com\/docs\/wp-content\/uploads\/2020\/04\/5823613e4f686c23a078445e25e3e8eb.png\">\u56fe\u6807\u4ee3\u8868\u51fd\u6570\u6587\u4ef6\uff0c\u5728\u6ca1\u6709\u8f93\u5165\u53d8\u91cf\u7684\u60c5\u51b5\u4e0b\u65e0\u6cd5\u76f4\u63a5\u8fd0\u884c\u3002\u66f4\u8be6\u7ec6\u7684\u89e3\u91ca\u53ef\u4ee5\u770b<a rel=\"noreferrer noopener\" href=\"https:\/\/ww2.mathworks.cn\/help\/matlab\/learn_matlab\/scripts-and-functions.html\" target=\"_blank\">\u8fd9\u91cc<\/a>\u3002<\/figcaption><\/figure><\/div>\n\n\n<p class=\"is-style-iw-2em\"><strong><span class=\"has-inline-color has-luminous-vivid-orange-color\">1.testIMF.m<\/span><\/strong><\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u7528\u4e8e\u6d4b\u8bd5\u8ba1\u7b97IMF\u65b9\u5dee\u8d21\u732e\u7387\u3001\u5e73\u5747\u5468\u671f\u3001\u76f8\u5173\u7cfb\u6570\uff0c\u9ad8\u9891\u3001\u4f4e\u9891\u3001\u8d8b\u52bf\u9879\u5206\u91cf\u5224\u522b\u4e0e\u91cd\u6784\u529f\u80fd\u7684\u811a\u672c\u6587\u4ef6\uff0c\u53ef\u4ee5\u76f4\u63a5\u8fd0\u884c\uff0c\u5176\u4e2d\u8c03\u7528\u4e86imfClc\u548cimfHLdif\uff0c\u6f14\u793a\u4e86\u8fd9\u4e24\u4e2a\u51fd\u6570\u7684\u8c03\u7528\u65b9\u6cd5\uff0c\u4ee5\u53ca\u5728\u547d\u4ee4\u884c\u7a97\u53e3<strong>\u6253\u5370\u51fa\u8ba1\u7b97\u7ed3\u679c\uff1b\u539f\u59cb\u6570\u636e\u56fe\uff1bEEMD\u5206\u89e3\u7ed3\u679c\u56fe\uff1b\u7ed8\u5236\u9ad8\u9891\u3001\u4f4e\u9891\u3001\u8d8b\u52bf\u9879\u56fe<\/strong>\u7684\u7528\u6cd5\u3002\u8fd0\u884c\u540e\u4f1a\u5f97\u5230\u4e0b\u8ff0\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"158\" src=\"https:\/\/khsci.com\/docs\/wp-content\/uploads\/2022\/03\/image-2-1024x158.png\" alt=\"\" class=\"wp-image-1488\" srcset=\"https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2022\/03\/image-2-1024x158.png 1024w, https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2022\/03\/image-2-300x46.png 300w, https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2022\/03\/image-2-768x119.png 768w, https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2022\/03\/image-2.png 1034w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">\u65b9\u5dee\u8d21\u732e\u7387\u3001\u5e73\u5747\u5468\u671f\u3001\u76f8\u5173\u7cfb\u6570\u3001\u9ad8\u9891\u548c\u4f4e\u9891\u5224\u65ad\u7b49\u7684\u8ba1\u7b97\u7ed3\u679c<\/figcaption><\/figure>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"513\" height=\"406\" src=\"https:\/\/khsci.com\/docs\/wp-content\/uploads\/2023\/06\/image-2.png\" alt=\"\" class=\"wp-image-2770\" srcset=\"https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2023\/06\/image-2.png 513w, https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2023\/06\/image-2-300x237.png 300w\" sizes=\"(max-width: 513px) 100vw, 513px\" \/><\/figure><\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"503\" height=\"678\" src=\"https:\/\/khsci.com\/docs\/wp-content\/uploads\/2023\/06\/image-3.png\" alt=\"\" class=\"wp-image-2771\" srcset=\"https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2023\/06\/image-3.png 503w, https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2023\/06\/image-3-223x300.png 223w\" sizes=\"(max-width: 503px) 100vw, 503px\" \/><\/figure><\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"506\" height=\"396\" src=\"https:\/\/khsci.com\/docs\/wp-content\/uploads\/2023\/06\/image-4.png\" alt=\"\" class=\"wp-image-2772\" srcset=\"https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2023\/06\/image-4.png 506w, https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2023\/06\/image-4-300x235.png 300w\" sizes=\"(max-width: 506px) 100vw, 506px\" \/><\/figure><\/div>\n\n\n<p class=\"is-style-iw-2em\"><strong><span class=\"has-inline-color has-luminous-vivid-orange-color\">2. imfClc.p<\/span><\/strong><\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u5c01\u88c5\u597d\u7684<strong><strong>\u65b9\u5dee\u8d21\u732e\u7387\u3001\u5e73\u5747\u5468\u671f\u3001\u76f8\u5173\u7cfb\u6570\u7684\u8ba1\u7b97<\/strong><\/strong>\u7a0b\u5e8f\uff0cp\u6587\u4ef6\u3002<\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u51fd\u6570\u53c2\u6570\u8bf4\u660e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-matlab\">function [VarR,AvePer,PearsonCor] = imfClc(data,imf)\n%%\n% \u5bf9\u4e8e\u201c\u7c7bEMD\u201d\u65b9\u6cd5\u5206\u89e3\u540e\u5f97\u5230\u7684\u5404\u4e2a\u5206\u91cf\u8ba1\u7b97\u8bc4\u4ef7\u6307\u6807\n% \u5305\u62ec\u65b9\u5dee\u8d21\u732e\u7387\u3001\u5e73\u5747\u5468\u671f\u548cPearson\u76f8\u5173\u7cfb\u6570\n% \u8f93\u5165\uff1a\n% data\uff1a\u5206\u89e3\u524d\u7684\u539f\u6570\u636e\n% imf\uff1a\u5206\u89e3\u540e\u5f97\u5230\u7684\u5206\u91cf\uff0c\u6ce8\u610fimf\u9700\u8981\u6cbf\u884c\u65b9\u5411\u5206\u5e03\n% \u8f93\u51fa\uff1a\n% VarR\uff1a\u65b9\u5dee\u8d21\u732e\u7387\n% AvePer\uff1a\u5e73\u5747\u5468\u671f\n% PearsonCor\uff1aPearson\u76f8\u5173\u7cfb\u6570<\/code><\/pre>\n\n\n\n<p class=\"is-style-iw-2em\"><strong><span class=\"has-inline-color has-luminous-vivid-orange-color\">3.imfHLdif.p<\/span><\/strong><\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u5c01\u88c5\u597d\u7684\u7a0b\u5e8f\uff0c\u53ef\u4ee5\u6839\u636e\u91cd\u6784\u7b97\u6cd5\u5c06\u5206\u89e3\u5f97\u51fa\u7684IMF\u8fdb\u884c\u9ad8\u4f4e\u9891\u7684\u533a\u5206\uff0c\u5185\u7f6e\u4e86\u7ed8\u5236 \u9ad8\u9891\u3001\u4f4e\u9891\u3001\u8d8b\u52bf\u9879\u5206\u89e3\u56fe\u7684\u65b9\u6cd5\uff0c\u4e0d\u8fc7\u8c03\u7528\u8be5\u51fd\u6570\u753b\u56fe\uff0c\u56fe\u7247\u7684\u6a2a\u5750\u6807\u4e3a\u6570\u636e\u70b9\u6570\uff0c\u800c\u4e0d\u662f\u65e5\u671f\uff0c\u5982\u679c\u8981\u4ee5\u65e5\u671f\u4e3a\u6a2a\u5750\u6807\u753b\u56fe\uff0c\u9700\u8981\u53c2\u8003 <strong>testIMF<\/strong> \u811a\u672c\u7684\u5199\u6cd5\u3002p\u6587\u4ef6\u3002<\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u51fd\u6570\u53c2\u6570\u8bf4\u660e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-matlab\">function [HighCom,LowCom,TrCom,HighIdx,LowIdx]=imfHLdif(data,imf,figflag)\n%% \u6839\u636e\u91cd\u6784\u7b97\u6cd5\u5c06\u5206\u89e3\u5f97\u51fa\u7684IMF\u8fdb\u884c\u9ad8\u4f4e\u9891\u7684\u533a\u5206\n% \u53c2\u8003\u300a\u57fa\u4e8eEEMD\u6a21\u578b\u7684\u4e2d\u56fd\u78b3\u5e02\u573a\u4ef7\u683c\u5f62\u6210\u673a\u5236\u7814\u7a76\u300b\n% \u8be5\u65b9\u6cd5\u5c06IMF1\u8bb0\u4e3a\u6307\u68071\uff0cIMF1\uff0bIMF2\u4e3a\u6307\u68072\uff0c\u4ee5\u6b64\u7c7b\u63a8\uff0c\n% \u524di\u4e2aIMF\u7684\u548c\u52a0\u6210\u4e3a\u6307\u6807i\uff0c\u5e76\u5bf9\u8be5\u5747\u503c\u662f\u5426\u663e\u8457\u533a\u522b\u4e8e0\u8fdb\u884ct\u68c0\u9a8c\u3002\n% \u8f93\u5165\uff1a\n% data\uff1a\u5206\u89e3\u524d\u7684\u539f\u59cb\u6570\u636e\n% imf\uff1a\u7ecf\u8fc7\u6a21\u6001\u5206\u89e3\u65b9\u6cd5\u5f97\u5230\u7684\u5206\u91cf\uff0c\u6bcf\u4e00\u884c\u4e3a\u4e00\u4e2a\u5206\u91cf\n% figflag\uff1a\u8bbe\u7f6e\u662f\u5426\u753b\u56fe\u7684\u53c2\u6570\uff0c&#039;on&#039;\u4e3a\u753b\u56fe\uff0c&#039;off&#039;\u4e3a\u4e0d\u753b\u56fe\n% \u8f93\u51fa\uff1a\n% HighCom\uff1a\u91cd\u6784\u540e\u7684\u9ad8\u9891\u5206\u91cf\n% LowCom\uff1a\u91cd\u6784\u540e\u7684\u4f4e\u9891\u5206\u91cf\n% TrCom\uff1a\u8d8b\u52bf\u9879\n% HighIdx\uff1a\u9ad8\u9891\u5206\u91cf\u5bf9\u7d22\u5f15\n% LowIdx\uff1a\u4f4e\u9891\u5206\u91cf\u5bf9\u7d22\u5f15<\/code><\/pre>\n\n\n\n<p class=\"is-style-iw-2em\" id=\"CGrrScd\">\u753b\u56fe\u6548\u679c\u5982\u4e0b\uff08\u53c2\u8003\uff09\uff1a<\/p>\n\n\n<div class=\"wp-block-image size-full\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"558\" height=\"419\" src=\"https:\/\/khsci.com\/docs\/wp-content\/uploads\/2022\/03\/image-7.png\" alt=\"\" class=\"wp-image-1493\" srcset=\"https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2022\/03\/image-7.png 558w, https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2022\/03\/image-7-300x225.png 300w\" sizes=\"(max-width: 558px) 100vw, 558px\" \/><\/figure><\/div>\n\n\n<p class=\"is-style-iw-2em\"><strong><span class=\"has-inline-color has-luminous-vivid-orange-color\">4.pEEMD.p<\/span><\/strong><\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u5c01\u88c5\u597d\u7684EEMD\u753b\u56fe\u7a0b\u5e8f\uff0c\u5176\u4e2d\u8c03\u7528\u4e86kEEMD.p\uff0cp\u6587\u4ef6\uff0c\u53ef\u4ee5\u8c03\u7528\u3002<\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u51fd\u6570\u53c2\u6570\u8bf4\u660e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-matlab\">function  imf = pEEMD(data,FsOrT,Nstd,NE)\n% \u753b\u4fe1\u53f7EEMD\u5206\u89e3\u56fe\n% \u8f93\u5165\uff1a\n% y\u4e3a\u5f85\u5206\u89e3\u4fe1\u53f7\n% FsOrT\u4e3a\u91c7\u6837\u9891\u7387\u6216\u91c7\u6837\u65f6\u95f4\u5411\u91cf\uff0c\u5982\u679c\u4e3a\u91c7\u6837\u9891\u7387\uff0c\u8be5\u53d8\u91cf\u8f93\u5165\u5355\u4e2a\u503c\uff1b\u5982\u679c\u4e3a\u65f6\u95f4\u5411\u91cf\uff0c\u8be5\u53d8\u91cf\u4e3a\u4e0ey\u76f8\u540c\u957f\u5ea6\u7684\u4e00\u7ef4\u5411\u91cf\u3002\u5982\u679c\u672a\u77e5\u91c7\u6837\u9891\u7387\uff0c\u53ef\u8bbe\u7f6e\u4e3a1\n% Nstd\u4e3a\u9644\u52a0\u566a\u58f0\u6807\u51c6\u5dee\u4e0eY\u6807\u51c6\u5dee\u4e4b\u6bd4\n% NE\u4e3a\u5bf9\u4fe1\u53f7\u7684\u5e73\u5747\u6b21\u6570\n% \u8f93\u51fa\uff1a\n% imf\u4e3a\u7ecfeemd\u5206\u89e3\u540e\u7684\u5404imf\u5206\u91cf\u503c\n% \u4f8b1\uff1a\uff08FsOrT\u4e3a\u91c7\u6837\u9891\u7387\uff09\n% fs = 100;\n% t = 1\/fs:1\/fs:1;\n% data = sin(2*pi*5*t)+2*sin(2*pi*20*t);\n% imf = pEEMD(data,fs,0.2,100);\n% \u4f8b2\uff1a\uff08FsOrT\u4e3a\u65f6\u95f4\u5411\u91cf\uff0c\u9700\u8981\u6ce8\u610f\u6b64\u65f6FsOrT\u7684\u957f\u5ea6\u8981\u4e0ey\u76f8\u540c\uff09\n% t = 0:0.01:1;\n% data = sin(2*pi*5*t)+2*sin(2*pi*20*t);\n% imf = pEEMD(data,t,0.2,100);<\/code><\/pre>\n\n\n\n<p class=\"is-style-iw-2em\"><strong><span class=\"has-inline-color has-luminous-vivid-orange-color\">5.kEEMD.p<\/span><\/strong><\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u8c03\u6574\u540e\u7684EEMD\u51fd\u6570\uff0c\u6574\u5408\u4e86\u4e2d\u592e\u5927\u5b66\u5de5\u5177\u7bb1\u7684EEMD\u5206\u89e3\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u8c03\u6574\u5305\u62ec\uff1a<\/p>\n\n\n\n<p class=\"is-style-iw-2em\">1.\u5c06imf\u5206\u91cf\u7531\u7eb5\u5411\u6539\u4e3a\u6a2a\u5411\uff0c\u4f7f\u4e4b\u4e0e<a href=\"https:\/\/khsci.com\/docs\/index.php\/2020\/04\/09\/1\/\">\u65f6\u9891\u57df\u5206\u6790\u5de5\u5177\u7bb1<\/a>\u4e2d\u5176\u4ed6\u6a21\u6001\u5206\u89e3\u5de5\u5177\u7684\u683c\u5f0f\u4fdd\u6301\u4e00\u81f4\u3002\u65b9\u4fbf\u4e0e\u540e\u7eed\u65b9\u6cd5\u7684\u8854\u63a5<\/p>\n\n\n\n<p class=\"is-style-iw-2em\">2.\u539f\u59cbeemd\u51fd\u6570\u4e2d\u7b2c\u4e00\u4e2a\u5206\u91cf\u4e3a\u539f\u59cb\u4fe1\u53f7\uff0c\u5220\u4e4b<\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u51fd\u6570\u53c2\u6570\u8bf4\u660e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-matlab\">function imf = kEEMD(data,Nstd,NE)\n% \u8c03\u6574\u540e\u7684EEMD\u51fd\u6570\uff0c\u6574\u5408\u4e86\u4e2d\u592e\u5927\u5b66\u5de5\u5177\u7bb1\u7684EEMD\u5206\u89e3\u65b9\u6cd5\n% \u8c03\u6574\u5305\u62ec\uff1a1.\u5c06imf\u5206\u91cf\u7531\u7eb5\u5411\u6539\u4e3a\u6a2a\u5411\uff0c\u4f7f\u4e4b\u4e0e\u65f6\u9891\u57df\u5206\u6790\u5de5\u5177\u7bb1\uff08https:\/\/khsci.com\/docs\/index.php\/2020\/04\/09\/1\/\uff09\u4e2d\u5176\u4ed6\u6a21\u6001\u5206\u89e3\u5de5\u5177\u7684\u683c\u5f0f\u4fdd\u6301\u4e00\u81f4\u3002\u65b9\u4fbf\u4e0e\u540e\u7eed\u65b9\u6cd5\u7684\u8854\u63a5\n%          2.\u539f\u59cbeemd\u51fd\u6570\u4e2d\u7b2c\u4e00\u4e2a\u5206\u91cf\u4e3a\u539f\u59cb\u4fe1\u53f7\uff0c\u5220\u4e4b\n% \u8f93\u5165\uff1a\n% data\uff1a\u5f85\u5206\u89e3\u7684\u6570\u636e\n% Nstd\u4e3a\u9644\u52a0\u566a\u58f0\u6807\u51c6\u5dee\u4e0eY\u6807\u51c6\u5dee\u4e4b\u6bd4\n% NE\u4e3a\u5bf9\u4fe1\u53f7\u7684\u5e73\u5747\u6b21\u6570\n% \u8f93\u51fa\uff1a\n% imf\uff1a\u5185\u6db5\u6a21\u6001\u5206\u91cf\uff0c\u7edf\u4e00\u4e3an*m\u683c\u5f0f\uff0c\u5176\u4e2dn\u4e3a\u6a21\u6001\u6570\uff0cm\u4e3a\u6570\u636e\u70b9\u6570\u3002\u4f8b\u5982 imf(1,:)\u5373IMF1\uff0cimf(emd,:)\u5373\u4e3a\u6b8b\u5dee\n\n% \u6ce8\u610f\uff1a\u4f7f\u7528\u4e24\u79cd\u5e93\u6240\u5f97\u5230\u7684imf\u7ed3\u679c\u4f1a\u5b58\u5728\u5dee\u5f02\uff0c\u8fd9\u662f\u7531\u4e24\u4e2a\u5e93\u81ea\u8eab\u7b97\u6cd5\u5dee\u5f02\u5bfc\u81f4\u7684\uff0c\u5c5e\u4e8e\u6b63\u5e38\u73b0\u8c61\u3002\n% \u6709\u4f59\u529b\u7684\u540c\u5b66\u53ef\u4ee5\u6839\u636e\u81ea\u5df1\u7684\u9700\u8981\u4fee\u6539\u4e0b\u8ff0\u4ee3\u7801\n% \u4f8b\u5982\u5f53type\u8bbe\u7f6e\u4e3a1\u65f6\uff0cmat_emd\u7684\u8f93\u5165\u53c2\u6570\u53ef\u4ee5\u5b8c\u5168\u53c2\u7167\u4e0b\u8ff0\u6587\u6863\u8fdb\u884c\u8bbe\u7f6e\uff1ahttps:\/\/ww2.mathworks.cn\/help\/signal\/ref\/emd.html?s_tid=srchtitle\n% \u6bd4\u5982\u8bbe\u7f6e\u6700\u5927IMF\u6570\u4e3a5\uff0c\u5219\u2460\u884c\u7684\u4ee3\u7801\u53ef\u4ee5\u5199\u4e3a\uff1aimf = mat_emd(data,&#039;MaxNumIMF&#039;,5)&#039;;\n\n% \u6ce8\u610f\uff1a\u5728\u4f7f\u7528\u8be5\u4ee3\u7801\u4e4b\u524d\uff0c\u8bf7\u52a1\u5fc5\u5b89\u88c5\u5de5\u5177\u7bb1\uff1ahttps:\/\/khsci.com\/docs\/index.php\/2020\/04\/09\/1\/<\/code><\/pre>\n\n\n\n<p class=\"is-style-iw-2em\"><strong> <span class=\"has-inline-color has-luminous-vivid-orange-color\">6.eemd.m\u548cextrema.m <\/span><\/strong><\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u7b2c\u4e09\u65b9EMD\u5de5\u5177\u7bb1\u91cc\u7684\u5f00\u6e90\u7a0b\u5e8f\uff0c\u4e3a\u4e86\u65b9\u4fbf\u4f7f\u7528\u6574\u5408\u5230\u4e00\u8d77\u4e86\u3002\u8fd9\u4e24\u4e2a\u4ee3\u7801\u4e3a\u5f00\u6e90\uff0c\u4e0d\u5c5e\u4e8e\u51fa\u552e\u548c\u552e\u540e\u8303\u56f4\uff0c\u5b83\u4eec\u4e5f\u53ef\u4ee5\u5728<a href=\"https:\/\/khsci.com\/docs\/index.php\/2020\/04\/09\/1\/\">\u65f6\u9891\u57df\u5de5\u5177\u7bb1<\/a>\u4e2d\u514d\u8d39\u83b7\u53d6\u5230\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"-cf7d125d-749b-470f-b24b-c6c6db65aaa8\"><strong>\u4e09\u3001\u4f7f\u7528\u6559\u7a0b<\/strong><\/h4>\n\n\n\n<p class=\"is-style-iw-2em\"><strong>1.\u8fd0\u884c\u6d4b\u8bd5\u811a\u672c<\/strong><\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u5148\u5728MATLAB\u91cc\u6253\u5f00\u4e0b\u8f7d\u597d\u7684\u6587\u4ef6\u5939\uff0c\u7136\u540e\u8fd0\u884c<strong> <span class=\"has-inline-color has-luminous-vivid-orange-color\"><strong>testIMF<\/strong>.m<\/span><\/strong>\u7a0b\u5e8f\uff0c\u7a0b\u5e8f\u8fd0\u884c\u5b8c\u6bd5\u540e\u5982\u679c\u6ca1\u62a5\u9519\uff0c\u5219\u8bf4\u660e\u8fd0\u884c\u73af\u5883\u6b63\u5e38\uff0c\u7a0b\u5e8f\u6b63\u786e\u3002<\/p>\n\n\n\n<p class=\"is-style-iw-2em\"><strong>2.\u5bfc\u5165\u6570\u636e<\/strong><\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u590d\u5236\u4e00\u4e2a<strong><strong>testIMF<\/strong>.m<\/strong>\u7684\u6587\u4ef6\u526f\u672c\uff0c\u5728\u8fd9\u4e2a\u526f\u672c\u91cc\u505a\u5982\u4e0b\u4fee\u6539\uff1a<\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u6839\u636e\u4f60\u7684\u6587\u4ef6\u7c7b\u578b\u7684\u4e0d\u540c\uff08excel,txt,csv\u7b49\uff09\uff0c\u5c06\u6570\u636e\u5bfc\u5165MATLAB\u7684\u65b9\u6cd5\u6709\u6240\u4e0d\u540c\u3002\u540c\u5b66\u4eec\u53ef\u4ee5\u770b\u535a\u4e3b\u9488\u5bf9\u5e38\u7528\u6587\u4ef6\u7684\u5bfc\u5165\u65b9\u6cd5\u7684<a href=\"https:\/\/khsci.com\/docs\/index.php\/2020\/05\/17\/loaddata\/\">\u8fd9\u4e2a\u6559\u7a0b<\/a>\uff0c\u6559\u7a0b\u4e0a\u672a\u5305\u542b\u7684\u6570\u636e\u7c7b\u578b\uff0c\u5927\u5bb6\u53ef\u4ee5\u518d\u53c2\u8003<a href=\"https:\/\/ww2.mathworks.cn\/help\/matlab\/standard-file-formats.html\">\u8fd9\u4e2a\u6587\u6863<\/a>\u3002<\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u5982\u679c\u4f60\u5df2\u7ecf\u5b9e\u73b0\u4e86\u6570\u636e\u5bfc\u5165\uff0c\u8fd9\u65f6\u5019\u5e94\u8be5\u62e5\u6709\u4e86\u4e00\u4e2a\u4e00\u7ef4\u6570\u636e\u53d8\u91cf\uff0c\u8fd9\u65f6\u5019\u5c31\u53ef\u4ee5\u8c03\u7528\u51fd\u6570\u8fdb\u884c\u8ba1\u7b97\u4e86\u3002<\/p>\n\n\n\n<p class=\"is-style-iw-2em\"><strong>3.\u5b9e\u73b0\u7279\u5f81\u63d0\u53d6<\/strong><\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u53c2\u7167 <strong><span class=\"has-inline-color has-luminous-vivid-orange-color\"><strong>testIMF<\/strong>.m<\/span><\/strong>\u6587\u4ef6\u4e2d1-5\u6b65\uff0c <strong><span class=\"has-inline-color has-luminous-vivid-orange-color\">imfClc<\/span><\/strong>\u548c<strong><span class=\"has-inline-color has-luminous-vivid-orange-color\">imfHLdif<\/span><\/strong>\u51fd\u6570\u7684\u8c03\u7528\u65b9\u6cd5\u4ee5\u53ca\u5728\u547d\u4ee4\u884c\u6253\u5370\u7ed3\u679c\u503c\u3001\u7ed8\u56fe\u65b9\u6cd5\uff0c\u8fd0\u884c\u7a0b\u5e8f\u5373\u53ef\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"--464c86eb-2339-4f65-b9a3-afcda5b57277\"><strong>\u56db\u3001 \u5173\u4e8e\u5b8c\u6574\u7248\u4e0e\u516c\u5f00\u7248\u4ee3\u7801 <\/strong><\/h4>\n\n\n\n<p class=\"is-style-iw-2em\">\u516c\u5f00\u7248\u4ee3\u7801\u7684\u51fd\u6570\u6587\u4ef6\u4e3ap\u6587\u4ef6\uff0c\u53ef\u4ee5\u88ab\u8c03\u7528\uff0c\u4f46\u65e0\u6cd5\u67e5\u770b\u4ee3\u7801\u3002\u5b8c\u6574\u7248\u4ee3\u7801\u4e2d\u5168\u90e8\u4e3am\u6587\u4ef6\uff0cm\u6587\u4ef6\u53ef\u4ee5\u67e5\u770b\u6e90\u7801\u5e76\u81ea\u7531\u4fee\u6539\u3002<\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u516c\u5f00\u7248\u4ee3\u7801\u4ec5\u53ef\u5bf9\u957f\u5ea6300\u4ee5\u5185\u7684\u6570\u636e\u5206\u89e3\uff1b\u5b8c\u6574\u7248\u65e0\u957f\u5ea6\u9650\u5236\u3002<\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u5b8c\u6574\u7248\u4ee3\u7801\u753b\u56fe\u65e0\u6c34\u5370\u3002<\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u5982\u679c\u9700\u8981\u5c01\u88c5\u597d\u7684\u753b\u56fe\u51fd\u6570\uff08 <span class=\"has-inline-color has-luminous-vivid-orange-color\">testIMF.m\u3001 imfClc.m\u3001 imfHLdif.m\u3001 pEEMD.m<\/span> \u548c <span class=\"has-inline-color has-luminous-vivid-orange-color\">kEEMD.m<\/span>\uff09\u7684\u6e90\u7801\uff0c\u53ef\u5728\u4e0b\u8ff0\u8fde\u63a5\uff08\u5b8c\u6574\u7248\uff09\u83b7\u53d6\u3002<\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u7f16\u7a0b\u4e0d\u6613\uff0c\u611f\u8c22\u652f\u6301~<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"-7ef34b55-243b-4acc-9409-83ad479ab34d\"><strong>\u4e94\u3001\u83b7\u53d6\u516c\u5f00\u7248\u7a0b\u5e8f\uff08\u9700\u4f7f\u7528\u7535\u8111\u6d4f\u89c8\u5668\u6253\u5f00\uff09<\/strong><\/h4>\n\n\n\n<p class=\"is-style-iw-2em\"><\/p>\n\n\n\n<div class=\"wpfd-single-file\">\n\n    <div class=\"wpfd-single-file--details wpfd-file-content\">\n                <h3 class=\"wpfd-file-content--title\">IMF\u6570\u636e\u6307\u6807\u8ba1\u7b97\u4e0e\u9ad8\u4f4e\u9891\u5224\u65ad\uff08\u516c\u5f00\u7248\uff09<\/h3>\n        <div class=\"wpfd-file-content--meta\">\n                    <div>\u6587\u4ef6\u5c3a\u5bf8: 71.43 KB<\/div>\n                    <div>\u66f4\u65b0: 18-06-2023<\/div>\n        <\/div>\n    <\/div>\n    <div class=\"wpfd-single-file--buttons\">\n                <a href=\"https:\/\/www.khsci.com\/docs\/index.php\/download\/6\/%e6%96%b0%e5%88%86%e7%b1%bb\/2768\/imf%e6%95%b0%e6%8d%ae%e6%8c%87%e6%a0%87%e8%ae%a1%e7%ae%97%e4%b8%8e%e9%ab%98%e4%bd%8e%e9%a2%91%e5%88%a4%e6%96%ad%ef%bc%88%e5%85%ac%e5%bc%80%e7%89%88%ef%bc%89.zip\"  data-id=\"2768\" title=\"IMF\u6570\u636e\u6307\u6807\u8ba1\u7b97\u4e0e\u9ad8\u4f4e\u9891\u5224\u65ad\uff08\u516c\u5f00\u7248\uff09\" class=\"noLightbox wpfd_downloadlink wpfd-single-file-button wpfd-button-download\">\n                    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"36\" height=\"36\" viewBox=\"0 0 400 400\"><g fill=\"#ffffff\"><path d=\"M200 400H26c-18 0-26-9-26-27v-73c0-16 9-25 24-25h105a14 14 0 018 4l28 28c21 21 48 21 69 0l28-29a13 13 0 018-3h106c14 0 24 9 24 23v79c0 14-10 23-25 23H200zm155-63c-9 0-17 8-17 16a15 15 0 0015 16c9 0 17-7 17-16a16 16 0 00-15-16zm-47 16c0-9-7-16-16-16a16 16 0 00-15 16c0 9 6 16 15 16s16-7 16-16zM245 127h55a56 56 0 017 0c7 0 11 4 13 10 3 6 1 11-3 16l-43 45-62 63c-8 9-17 9-25 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