{"id":3210,"date":"2024-03-11T23:46:54","date_gmt":"2024-03-11T15:46:54","guid":{"rendered":"http:\/\/khsci.com\/docs\/?p=3210"},"modified":"2024-04-07T21:34:04","modified_gmt":"2024-04-07T13:34:04","slug":"emdsica","status":"publish","type":"post","link":"https:\/\/www.khsci.com\/docs\/index.php\/2024\/03\/11\/emdsica\/","title":{"rendered":"VMD-ICA\u6ee4\u6ce2\u7b97\u6cd5"},"content":{"rendered":"\n<h4 class=\"wp-block-heading\"><strong>\u4e00\u3001\u4ee3\u7801\u8fd0\u884c\u73af\u5883<\/strong><\/h4>\n\n\n\n<p>\u7406\u8bba\u4e0aMATLAB2016\u4ee5\u4e0a\u53ef\u4ee5\u4f7f\u7528\uff0c\u63a8\u8350\u4f7f\u7528MATLAB2020a\u53ca\u66f4\u65b0\u7248\u672c\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u4e8c\u3001\u7a0b\u5e8f\u4ecb\u7ecd<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"175\" height=\"130\" src=\"https:\/\/khsci.com\/docs\/wp-content\/uploads\/2024\/03\/image.png\" alt=\"\" class=\"wp-image-3215\"\/><\/figure><\/div>\n\n\n<p class=\"is-style-iw-2em\"><span style=\"font-family: \u6977\u4f53;\">\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=\"nofollow noopener noreferrer\" href=\"https:\/\/ww2.mathworks.cn\/help\/matlab\/learn_matlab\/scripts-and-functions.html\" target=\"_blank\">\u8fd9\u91cc<\/a>\u3002<\/span><\/p>\n\n\n\n<p class=\"is-style-iw-2em\"> <span style=\"color: #ff6600;\"><strong>1.<\/strong><\/span><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">FastICA_25<\/mark><\/strong><span style=\"color: #ff6600;\"><strong>\u6587\u4ef6\u5939<\/strong><\/span><\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u7b2c\u4e09\u65b9FastICA\u7684\u5de5\u5177\u7bb1\uff0c\u5728\u8be5\u4ee3\u7801\u4e2d\u8c03\u7528\u3002\u5de5\u5177\u7bb1\u4e2d\u662fFastICA\u7684\u4e00\u4e9b\u5e95\u5c42\u5b9e\u73b0\uff0c\u8be5\u6587\u4ef6\u5939\u4e2d\u7684\u6587\u4ef6\u4e0d\u9700\u8981\u4fee\u6539\u3002\u5f53\u79fb\u690d\u4ee3\u7801\u65f6\uff0c\u8be5\u6587\u4ef6\u5939\u9700\u8981\u968f\u5176\u4ed6\u6587\u4ef6\u4e00\u8d77\u79fb\u690d\u3002<\/p>\n\n\n\n<p class=\"is-style-iw-2em\"> <span style=\"color: #ff6600;\"><strong>2.<\/strong><\/span><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"><b style=\"\">demoFilEMDsIC<\/b><\/mark><span style=\"color: #ff6600;\"><strong>A.m\u6587\u4ef6<\/strong><\/span><\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u8fdb\u884cVMD-ICA\u6ee4\u6ce2\u7684\u811a\u672c\u6587\u4ef6\uff0c\u51fd\u6570filEMDsICA\u7684\u6d4b\u8bd5\u6587\u4ef6\uff0c\u53ef\u4ee5\u76f4\u63a5\u8fd0\u884c\u3002\u8be5\u811a\u672c\u4e2d\u4f7f\u7528\u7684\u662fVMD\u7b97\u6cd5\u8fdb\u884c\u5206\u89e3\uff0c\u5f53\u7136\u4f60\u53ef\u4ee5\u6839\u636e\u9700\u8981\u6362\u6210\u5176\u4ed6\u5206\u89e3\u7a0b\u5e8f\u3002\u7a0b\u5e8f\u8fd0\u884c\u5b8c\u6210\u540e\uff0c\u5728MATLAB\u7684\u5de5\u4f5c\u533a\uff0c\u53cc\u51fbreSig\u53d8\u91cf\uff0c\u53ef\u4ee5\u67e5\u770b\u6ee4\u6ce2\u540e\u7684\u5177\u4f53\u6570\u503c\u3002<\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u8fd0\u884c\u8be5\u6587\u4ef6\uff0c\u5c06\u7ed8\u5236\u4ee5\u4e0b\u56fe\u7247\uff1a<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"479\" height=\"397\" src=\"https:\/\/khsci.com\/docs\/wp-content\/uploads\/2024\/03\/image-1.png\" alt=\"\" class=\"wp-image-3216\" srcset=\"https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2024\/03\/image-1.png 479w, https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2024\/03\/image-1-300x249.png 300w\" sizes=\"(max-width: 479px) 100vw, 479px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-align-center\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-cyan-bluish-gray-color\">\u52a0\u5165\u566a\u58f0\u524d\u540e\u4fe1\u53f7<\/mark><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"491\" height=\"403\" src=\"https:\/\/khsci.com\/docs\/wp-content\/uploads\/2024\/03\/image-2.png\" alt=\"\" class=\"wp-image-3217\" srcset=\"https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2024\/03\/image-2.png 491w, https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2024\/03\/image-2-300x246.png 300w\" sizes=\"(max-width: 491px) 100vw, 491px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-align-center\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-cyan-bluish-gray-color\">VMD\u5206\u89e3\u7ed3\u679c<\/mark><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"514\" height=\"415\" src=\"https:\/\/khsci.com\/docs\/wp-content\/uploads\/2024\/03\/image-3.png\" alt=\"\" class=\"wp-image-3218\" srcset=\"https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2024\/03\/image-3.png 514w, https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2024\/03\/image-3-300x242.png 300w\" sizes=\"(max-width: 514px) 100vw, 514px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-align-center\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-cyan-bluish-gray-color\">VMD\u5206\u89e3\u4e09\u7ef4\u5c55\u5f00\u56fe<\/mark><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"501\" height=\"402\" src=\"https:\/\/khsci.com\/docs\/wp-content\/uploads\/2024\/03\/image-4.png\" alt=\"\" class=\"wp-image-3219\" srcset=\"https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2024\/03\/image-4.png 501w, https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2024\/03\/image-4-300x241.png 300w\" sizes=\"(max-width: 501px) 100vw, 501px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-align-center\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-cyan-bluish-gray-color\">FastICA\u5206\u89e3\u7ed3\u679c<\/mark><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"492\" height=\"395\" src=\"https:\/\/khsci.com\/docs\/wp-content\/uploads\/2024\/03\/image-5.png\" alt=\"\" class=\"wp-image-3220\" srcset=\"https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2024\/03\/image-5.png 492w, https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2024\/03\/image-5-300x241.png 300w\" sizes=\"(max-width: 492px) 100vw, 492px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-align-center\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-cyan-bluish-gray-color\">\u6ee4\u6ce2\u6548\u679c\u5bf9\u6bd4\u56fe<\/mark><\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u53e6\u5916\u5728\u547d\u4ee4\u884c\u7a97\u53e3\u5c06\u4f1a\u6253\u5370\uff1a<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"434\" height=\"148\" src=\"https:\/\/khsci.com\/docs\/wp-content\/uploads\/2024\/03\/image-6.png\" alt=\"\" class=\"wp-image-3221\" srcset=\"https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2024\/03\/image-6.png 434w, https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2024\/03\/image-6-300x102.png 300w\" sizes=\"(max-width: 434px) 100vw, 434px\" \/><\/figure><\/div>\n\n\n<p class=\"is-style-iw-2em\"><span style=\"color: #ff6600;\"><strong>3.filEMDsICA.m\u6587\u4ef6<\/strong><\/span><\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u4f7f\u7528ICA\u5bf9IMF\u5206\u91cf\u8fdb\u884c\u5904\u7406\uff0c\u5e76\u6839\u636e\u4fe1\u606f\u71b5\u7b5b\u9009\u51fa\u6709\u6548\u5206\u91cf\u8fdb\u884c\u4fe1\u53f7\u91cd\u6784\u3002\u4e3b\u7b97\u6cd5\u6d41\u7a0b\u5168\u90e8\u5c01\u88c5\u5176\u4e2d\u3002\u8be5\u51fd\u6570\u4e2d\u8fd8\u5305\u542b\u4e86\u6c42\u529f\u7387\u8c31\u71b5\u7684\u51fd\u6570kPowerSpectrumEntropy\u548c\u6c42\u4fe1\u606f\u71b5\u51fd\u6570kInformationEntopy\u3002<\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u9700\u6ce8\u610f\u8be5\u51fd\u6570\u6587\u4ef6\u4e0d\u80fd\u76f4\u63a5\u8fd0\u884c\uff0c\u9700\u53c2\u7167<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">demoFilEMDsICA<\/mark><\/strong>\u7684\u6f14\u793a\u6848\u4f8b\u8fdb\u884c\u8c03\u7528\u3002\u6b64\u5916\u9700\u6ce8\u610f\uff0c\u8be5\u51fd\u6570\u4ec5\u5bf9\u4e00\u7ef4\u6570\u636e\u8fdb\u884c\u6ee4\u6ce2\u3002<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-matlab\">function reSig = filEMDsICA(imf)\n% filEMDsICA - \u4f7f\u7528ICA\u5bf9IMF\u5206\u91cf\u8fdb\u884c\u5904\u7406,\u5e76\u6839\u636e\u4fe1\u606f\u71b5\u7b5b\u9009\u51fa\u6709\u6548\u5206\u91cf\u8fdb\u884c\u4fe1\u53f7\u91cd\u6784\n%\n% \u8f93\u5165\u53c2\u6570:\n%   imf - \u7ecf\u8fc7EMD\u5206\u89e3\u5f97\u5230\u7684IMF\u5206\u91cf,\u6bcf\u4e00\u884c\u4e3a\u4e00\u4e2aIMF\u5206\u91cf\n%\n% \u8f93\u51fa\u53c2\u6570:\n%   reSig - \u6ee4\u6ce2\u540e\u7684\u4fe1\u53f7<\/code><\/pre>\n\n\n\n<p class=\"is-style-iw-2em\"><span style=\"color: #ff6600;\"><strong>4.FilterEffectEvaluation.m\u6587\u4ef6<\/strong><\/span><\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u5bf9\u6ee4\u6ce2\u6548\u679c\u8fdb\u884c\u8bc4\u4f30\u3002\u76ee\u524d\u5305\u542b\u7684\u8bc4\u4f30\u6307\u6807\u6709\uff1a\u4fe1\u566a\u6bd4SNR\uff0c\u5747\u65b9\u5deeMSE\uff0c\u6ce2\u5f62\u76f8\u4f3c\u7cfb\u6570NCC\u3002<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-matlab\">function [SNR,MSE,NCC] = FilterEffectEvaluation(ori,fil)\n\n% \u5bf9\u6ee4\u6ce2\u6548\u679c\u8fdb\u884c\u8bc4\u4f30\n% \u76ee\u524d\u5305\u542b\u7684\u8bc4\u4f30\u6307\u6807\u6709\uff1a\u4fe1\u566a\u6bd4SNR\uff0c\u5747\u65b9\u5deeMSE\uff0c\u6ce2\u5f62\u76f8\u4f3c\u7cfb\u6570NCC\n% \u8f93\u5165\uff1a\n% ori\uff1a\u65e0\u566a\u58f0\u7684\u539f\u59cb\u6570\u636e\uff0c\u4e00\u7ef4\u5e8f\u5217\n% fil\uff1a\u6ee4\u6ce2\u540e\u7684\u6570\u636e\uff0c\u4e00\u7ef4\u5e8f\u5217\n% \u8f93\u51fa\uff1a\n% SNR\uff1a\u4fe1\u566a\u6bd4\n% MSE\uff1a\u5747\u65b9\u8bef\u5dee\n% NCC\uff1a\u6ce2\u5f62\u76f8\u4f3c\u7cfb\u6570<\/code><\/pre>\n\n\n\n<p class=\"is-style-iw-2em\"><span style=\"color: #ff6600;\"><strong>5.pFastICA.m\u6587\u4ef6<\/strong><\/span><\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u4f7f\u7528FastICA\u7b97\u6cd5\u5206\u89e3\u6df7\u5408\u4fe1\u53f7\u5e76\u753b\u56fe\u7684\u4ee3\u7801\u3002<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-matlab\">function [icasig, A, W] = pFastICA(mixedsig, numOfIC, g)\n% pFastICA \u4f7f\u7528FastICA\u7b97\u6cd5\u5206\u89e3\u6df7\u5408\u4fe1\u53f7\u5e76\u753b\u56fe\u7684\u4ee3\u7801\n% \u8f93\u5165:\n% mixedsig - \u6df7\u5408\u4fe1\u53f7\u77e9\u9635\uff0c\u6bcf\u884c\u4ee3\u8868\u4e00\u4e2a\u89c2\u6d4b\u503c\uff0c\u6bcf\u5217\u4ee3\u8868\u4e00\u4e2a\u89c2\u6d4b\u70b9\n% numOfIC - \u9700\u8981\u63d0\u53d6\u7684\u72ec\u7acb\u6210\u5206\u6570\u76ee\uff0c\u5982\u679c\u4e0d\u6307\u5b9a\u6570\u76ee\uff0c\u5219\u8f93\u51650\n% g - \u4f7f\u7528\u7684\u975e\u7ebf\u6027\u51fd\u6570\u7c7b\u578b\uff0c\u53ef\u9009&#039;pow3&#039;, &#039;tanh&#039;, &#039;gauss&#039;\n%                       Value of &#039;g&#039;:      Nonlinearity used:\n%                       &#039;pow3&#039; (default)   g(u)=u^3\n%                       &#039;tanh&#039;             g(u)=tanh(a1*u)\n%                       &#039;gauss             g(u)=u*exp(-a2*u^2\/2)\n%\n% \u8f93\u51fa:\n% icasig - \u5206\u89e3\u540e\u7684\u72ec\u7acb\u6210\u5206\u4fe1\u53f7\u77e9\u9635\n% A - \u6df7\u5408\u77e9\u9635\n% W - \u89e3\u6df7\u77e9\u9635\n% icasig = W*mixedsig\n% mixedsig = A*icasig<\/code><\/pre>\n\n\n\n<p class=\"is-style-iw-2em\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">6.kVMD.m<\/mark><\/strong><\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u6574\u5408\u7248VMD\u51fd\u6570\uff0c\u6574\u5408\u4e86\u7b2c\u4e09\u65b9VMD\u548cMATLAB\u81ea\u5e26\u5de5\u5177\u7bb1\u7684VMD\u5206\u89e3\u65b9\u6cd5\uff0c\u5e76\u4e14\u7edf\u4e00\u8f93\u51fa\u683c\u5f0f\uff0c\u914d\u5408\u540e\u7eed\u8fdb\u884c\u5e0c\u5c14\u4f2f\u7279-\u9ec4\u53d8\u6362\u7b49\u65e0\u7f1d\u8854\u63a5\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,CenFs]  = kVMD(data,FsOrT, alpha, K, tol)\n% \u6574\u5408\u7248VMD\u51fd\u6570\uff0c\u6574\u5408\u4e86\u7b2c\u4e09\u65b9VMD\u548cMATLAB\u81ea\u5e26\u5de5\u5177\u7bb1\u7684VMD\u5206\u89e3\u65b9\u6cd5\n% \u9ed8\u8ba4\u8bbe\u7f6e\u4e0b\u6309\u7167MATLAB\u81ea\u5e26\u5e93\u8fdb\u884c\n% \u5e76\u4e14\u7edf\u4e00\u8f93\u51fa\u683c\u5f0f\uff0c\u914d\u5408\u540e\u7eed\u8fdb\u884c\u5e0c\u5c14\u4f2f\u7279-\u9ec4\u53d8\u6362\u7b49\u65e0\u7f1d\u8854\u63a5\n% \u8f93\u5165\uff1a\n% data\uff1a\u5f85\u5206\u89e3\u7684\u6570\u636e(\u4e00\u7ef4)\n% FsOrT\uff1a\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% alpha   - \u60e9\u7f5a\u56e0\u5b50\n% K       - \u6307\u5b9a\u5206\u89e3\u6a21\u6001\u6570\n% tol     - \u6536\u655b\u5bb9\u5dee\uff0c\u662f\u4f18\u5316\u7684\u505c\u6b62\u51c6\u5219\u4e4b\u4e00\uff0c\u53ef\u4ee5\u53d6 1e-6~5e-6\n\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(end,:)\u5373\u4e3a\u6b8b\u5dee\n% \u6ce8\u610f\uff0c\u4e3a\u4e86\u4e0e\u5176\u4ed6\u201c\u7c7bEMD\u201d\u65b9\u6cd5\u5206\u89e3\u51fa\u6765\u7684imf\u5206\u91cf\u4fdd\u6301\u4e00\u81f4\uff0c\u672c\u7a0b\u5e8f\u5185\u5c06imf\u6392\u5e8f\u8fdb\u884c\u4e86\u7ffb\u8f6c\n% \u5373\u4fdd\u8bc1imf\u6392\u5217\u662f\u4ece\u9ad8\u9891\u5411\u4f4e\u9891\u6392\u5217\n% CenFs\uff1a\u5373CentralFrequencies\uff0c\u5404imf\u5206\u91cf\u7684\u4e2d\u5fc3\u9891\u7387\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<\/code><\/pre>\n\n\n\n<p class=\"is-style-iw-2em\"><b><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">7.pVMD.m<\/mark><\/b><\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u5c01\u88c5\u597d\u7684<b>VMD<\/b>\u753b\u56fe\u7a0b\u5e8f\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,CenFs] = pVMD(y,FsOrT, alpha, K, tol)\n% \u753b\u4fe1\u53f7VMD\u5206\u89e3\u56fe\n% \u8f93\u5165\uff1a\n% data\uff1a\u5f85\u5206\u89e3\u7684\u6570\u636e(\u4e00\u7ef4)\n% FsOrT\uff1a\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% alpha   - \u60e9\u7f5a\u56e0\u5b50\n% K       - \u6307\u5b9a\u5206\u89e3\u6a21\u6001\u6570\n% tol     - \u6536\u655b\u5bb9\u5dee\uff0c\u662f\u4f18\u5316\u7684\u505c\u6b62\u51c6\u5219\u4e4b\u4e00\uff0c\u53ef\u4ee5\u53d6 1e-6~5e-6\n\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(end,:)\u5373\u4e3a\u6b8b\u5dee\n% \u6ce8\u610f\uff0c\u4e3a\u4e86\u4e0e\u5176\u4ed6\u201c\u7c7bEMD\u201d\u65b9\u6cd5\u5206\u89e3\u51fa\u6765\u7684imf\u5206\u91cf\u4fdd\u6301\u4e00\u81f4\uff0c\u672c\u7a0b\u5e8f\u5185\u5c06imf\u6392\u5e8f\u8fdb\u884c\u4e86\u7ffb\u8f6c\n% \u5373\u4fdd\u8bc1imf\u6392\u5217\u662f\u4ece\u9ad8\u9891\u5411\u4f4e\u9891\u6392\u5217\n% CenFs\uff1a\u5373CentralFrequencies\uff0c\u5404imf\u5206\u91cf\u7684\u4e2d\u5fc3\u9891\u7387\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\">\u753b\u56fe\u6548\u679c\u5982\u4e0b\uff08\u53c2\u8003\uff09\uff1a<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/khsci.com\/docs\/wp-content\/uploads\/2021\/08\/1e733484401a937db073775984e67e5e.png\" alt=\"\"\/><\/figure><\/div>\n\n\n<p>\u53ef\u4ee5\u540c\u65f6\u753b\u51fa\u4e0b\u8fb9\u8fd9\u5f20VMD\u5206\u89e3\u7684\u4e09\u7ef4\u5c55\u5f00\u56fe\uff08\u5b8c\u6574\u7248\u72ec\u6709\uff09\uff1a<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"531\" height=\"409\" src=\"https:\/\/khsci.com\/docs\/wp-content\/uploads\/2023\/04\/image-4.png\" alt=\"\" class=\"wp-image-2512\" srcset=\"https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2023\/04\/image-4.png 531w, https:\/\/www.khsci.com\/docs\/wp-content\/uploads\/2023\/04\/image-4-300x231.png 300w\" sizes=\"(max-width: 531px) 100vw, 531px\" \/><\/figure><\/div>\n\n\n<h4 class=\"wp-block-heading\" id=\"\u56db\u3001\u5feb\u901f\u5f00\u59cb\">\u4e09\u3001\u5feb\u901f\u5f00\u59cb<\/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\"><span style=\"color: #ff6600;\"><span style=\"color: #000000;\">\u5148\u5728MATLAB\u91cc\u6253\u5f00\u4e0b\u8f7d\u597d\u7684\u6587\u4ef6\u5939\uff0c\u7136\u540e\u8fd0\u884c<\/span><strong>demoFilEMDsICA.m<\/strong><span style=\"color: #000000;\">\u7a0b\u5e8f\uff0c\u7a0b\u5e8f\u8fd0\u884c\u5b8c\u6bd5\u540e\u5982\u679c\u6ca1\u62a5\u9519\uff0c\u4e14\u6b63\u5e38\u753b\u51fa\u6ee4\u6ce2\u5bf9\u6bd4\u56fe\u50cf\uff0c\u5219\u8bf4\u660e\u8fd0\u884c\u73af\u5883\u6b63\u5e38\uff0c\u7a0b\u5e8f\u6b63\u786e\u3002<\/span><\/span><\/p>\n\n\n\n<p class=\"is-style-iw-2em\"><strong>2.\u4fee\u6539\u4eff\u771f\u6570\u636e\/\u5bfc\u5165\u6570\u636e<\/strong><\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u590d\u5236\u4e00\u4e2a<span style=\"color: #ff6600;\"><strong>demoFilEMDsICA.m<\/strong><\/span>\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\">\uff081\uff09\u7b2c\u4e00\u79cd\u60c5\u51b5\uff0c\u4f60\u53ef\u80fd\u60f3\u8981\u5bf9\u4f60\u81ea\u5df1\u8981\u7814\u7a76\u7684<strong>\u4eff\u771f\u6570\u636e<\/strong>\u8fdb\u884c\u6ee4\u6ce2\u6d4b\u8bd5\uff0c\u6b64\u65f6\u4f60\u9700\u8981\u5bf9 <span style=\"color: #ff6600;\"><strong>demoFilEMDsICA.m<\/strong><\/span> \u811a\u672c\u6587\u4ef6\u4e2d\u7684\u7b2c1\u5c0f\u8282\u5185\u5bb9\u8fdb\u884c\u4fee\u6539\u66ff\u6362\u5373\u53ef\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u8bf7\u6700\u597d<strong>\u4fdd\u6301\u53d8\u91cf\u540d\u7684\u4e00\u81f4<\/strong>\uff0c\u5373\u5c06\u65e0\u566a\u58f0\u4fe1\u53f7\u547d\u540d\u4e3aps\uff0c\u6dfb\u52a0\u566a\u58f0\u540e\u7684\u4fe1\u53f7\u547d\u540d\u4e3ax\uff0cx\u548cps\u90fd\u5e94\u8be5\u662f\u4e00\u7ef4\u6570\u636e\u3002\u6b64\u65f6\u6570\u636e\u66ff\u6362\u5b8c\u6210\u3002<\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\uff082\uff09\u7b2c\u4e8c\u79cd\u60c5\u51b5\uff0c\u4f60\u53ef\u80fd\u662f\u60f3\u5bf9\u4e00\u6bb5<strong>\u771f\u5b9e\u91c7\u96c6<\/strong>\u7684\u6570\u636e\u8fdb\u884c\u6ee4\u6ce2\uff0c\u6b64\u65f6\u9700\u8981\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<strong>\u5bfc\u5165\u5b8c\u6210\u540e\u8bf7\u8bb2\u8fd9\u4e2a\u5f85\u6ee4\u6ce2\u4fe1\u53f7\u547d\u540d\u4e3ax<\/strong>\u3002\u6b64\u65f6\u4f60\u53ef\u80fd\u6ca1\u6709\u7eaf\u51c0\u4fe1\u53f7\uff08\u5728\u5927\u591a\u6570\u5b9e\u9645\u5e94\u7528\u4e2d\u662f\u6ca1\u6709\u7eaf\u51c0\u4fe1\u53f7\u7684\uff09\uff0c\u8fd9\u4e0d\u5f71\u54cd\u4f60\u662f\u7528\u5c0f\u6ce2\u9608\u503c\u6ee4\u6ce2\u8fdb\u884c\u4fe1\u53f7\u53bb\u566a\uff0c\u4f46\u662f\u4f60\u5c06\u65e0\u6cd5\u8ba1\u7b97\u6ee4\u6ce2\u8bc4\u4ef7\u6307\u6807\u3002<\/p>\n\n\n\n<p class=\"is-style-iw-2em\"><strong>3.\u66ff\u6362\u6a21\u6001\u5206\u89e3\u65b9\u6cd5\uff08\u53ef\u9009\uff09<\/strong><\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u53c2\u7167<span style=\"color: #ff6600;\"> <span style=\"color: #ff6600;\"><span style=\"color: #ff6600;\"><strong>demoFilEMDsICA<\/strong><\/span><\/span>.m<\/span>\u6587\u4ef6<span style=\"color: #000000;\">\u4e2d\u7b2c\u4e8c\u6b65\u3002\u4f60\u53ef\u4ee5\u9009\u62e9\u7ee7\u7eed\u4f7f\u7528VMD\u7b97\u6cd5\uff0c\u6b64\u65f6<\/span>\u53ef\u4ee5\u6839\u636e\u9700\u8981\u4fee\u6539alpha\u3001tol\u3001K\u7b49\u53c2\u6570\uff1b\u4f60\u4e5f\u53ef\u4ee5\u9009\u62e9\u66ff\u6362\u6210\u5176\u4ed6\u7684\u6a21\u6001\u5206\u89e3\u7b97\u6cd5\uff0c\u5e97\u94fa\u4e2d\u6709\u76f8\u5173\u4ee3\u7801\uff0c\u5927\u5bb6\u53ef\u4ee5\u5728\u4e0b\u8fb9\u94fe\u63a5\u4e2d\u627e\u5230\uff1ahttps:\/\/khsci.com\/docs\/\u3002\u81f3\u4e8e\u66ff\u6362\u65b9\u6cd5\uff0c\u6211\u4e5f\u5f55\u5236\u4e86\u89c6\u9891\u4f9b\u5927\u5bb6\u53c2\u8003\uff08\u9700\u5b8c\u6574\u7248\uff09\u3002<\/p>\n\n\n\n<p class=\"is-style-iw-2em\"><strong>4.\u8fd0\u884c\u7a0b\u5e8f<\/strong><\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\u6b64\u65f6\u8fd0\u884c\u7a0b\u5e8f\u5373\u53ef\u3002<\/p>\n\n\n\n<p class=\"is-style-iw-2em\">\uff08\u9700\u8981\u6ce8\u610f\uff0c\u5bf9\u4e8e\u4f7f\u7528\u771f\u5b9e\u91c7\u96c6\u7684\u6570\u636e\u8fdb\u884c\u6ee4\u6ce2\uff0c\u4e14\u65e0\u7eaf\u51c0\u4fe1\u53f7\u7684\u60c5\u51b5\u4e0b\uff0c\u9700\u8981\u5220\u9664\u4ee3\u7801\u4e2d\u7684\u7b2c4\u8282\u6ee4\u6ce2\u8bc4\u4ef7\u6307\u6807\u8ba1\u7b97\uff0c\u5e76\u5c06\u7b2c5\u8282\u6ee4\u6ce2\u5bf9\u6bd4\u56fe\u50cf\u6309\u7167\u6ce8\u91ca\u8fdb\u884c\u4fee\u6539\uff09<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"\u4e94\u3001\u83b7\u53d6\u7a0b\u5e8f\uff08\u9700\u4f7f\u7528\u7535\u8111\u6d4f\u89c8\u5668\u6253\u5f00\uff09\">\u56db\u3001\u5173\u4e8e\u5b8c\u6574\u7248\u4e0e\u516c\u5f00\u7248\u4ee3\u7801<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>\u529f\u80fd<\/td><td>\u5b8c\u6574\u7248<\/td><td>\u516c\u5f00\u7248<\/td><\/tr><tr><td>\u6570\u636e\u5bfc\u5165\u3001\u53c2\u6570\u8bbe\u7f6e\u3001\u5b9e\u73b0\u7279\u5f81\u63d0\u53d6<\/td><td>\u221a<\/td><td>\u221a<\/td><\/tr><tr><td>\u8f6f\u4ef6\u5168\u90e8\u6e90\u7801\uff08\u51fd\u6570m\u6587\u4ef6\uff09<\/td><td>\u221a<\/td><td>\u00d7<\/td><\/tr><tr><td>\u7279\u5f81\u63d0\u53d6\u6570\u636e\u957f\u5ea6<\/td><td>\u65e0\u9650\u5236<\/td><td>200\u4e2a\u70b9\u4ee5\u5185<\/td><\/tr><tr><td>\u753b\u56fe\u6c34\u5370<\/td><td>\u65e0\u6c34\u5370<\/td><td>\u6709\u6c34\u5370<\/td><\/tr><tr><td>\u5982\u4f55\u66ff\u6362\u5176\u4ed6\u6a21\u6001\u5206\u89e3\u65b9\u6cd5\u7684\u89c6\u9891\u6559\u7a0b<\/td><td>\u221a<\/td><td>\u00d7<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" 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