{"id":5380,"date":"2023-06-05T16:19:39","date_gmt":"2023-06-05T08:19:39","guid":{"rendered":"http:\/\/www.dcl-controls.com\/?p=5380"},"modified":"2025-03-31T09:18:37","modified_gmt":"2025-03-31T09:18:37","slug":"why-voltage-signal-oscillate","status":"publish","type":"post","link":"https:\/\/dclcontrols.com\/zh_tw\/%e6%94%af%e6%8f%b4\/ta-acutator\/%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9b%bb%e5%a3%93%e8%a8%8a%e8%99%9f%e6%9c%83%e6%8c%af%e7%9b%aa%ef%bc%9f","title":{"rendered":"\u70ba\u4ec0\u9ebc\u96fb\u58d3\u8f38\u51fa\u4fe1\u865f\u6703\u5728\u67d0\u4e9b\u689d\u4ef6\u4e0b\u632f\u76ea\uff1f"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"5380\" class=\"elementor elementor-5380\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1893469 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"1893469\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-61d5be0\" data-id=\"61d5be0\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f64e7bf elementor-widget elementor-widget-text-editor\" data-id=\"f64e7bf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3>\u00a0<\/h3><h2><strong>1. \u96fb\u58d3\u8a0a\u865f\u50b3\u8f38\u8def\u5f91<\/strong><\/h2><figure style=\"width: 960px\" class=\"wp-caption alignnone\"><img fetchpriority=\"high\" decoding=\"async\" src=\"\/wp-content\/uploads\/2023\/06\/voltage-signal-path.webp\" alt=\"\u57161 \u96fb\u58d3\u6e90\u8a0a\u865f\u7684\u50b3\u8f38\u8def\u5f91\" width=\"960\" height=\"299\" \/><figcaption class=\"wp-caption-text\">\u57161 \u96fb\u58d3\u6e90\u8a0a\u865f\u7684\u50b3\u8f38\u8def\u5f91<\/figcaption><\/figure><p>\u5982\u5716\u6240\u793a <strong>\u5716 1<\/strong>\u96fb\u58d3\u8a0a\u865f\u50b3\u8f38\u7cfb\u7d71\u7531\u4e09\u500b\u4e3b\u8981\u90e8\u4ef6\u7d44\u6210\uff1a<\/p><ol><li><p><strong>\u8ca0\u56de\u6388\u96fb\u58d3\u8f38\u51fa\u96fb\u8def<\/strong><\/p><\/li><li><p><strong>\u8a0a\u865f\u50b3\u8f38\u96fb\u7e9c<\/strong><\/p><ul><li><p>\u5305\u62ec <strong>\u5bc4\u751f\u96fb\u5bb9\uff08C1\uff09<\/strong> \u548c <strong>\u5bc4\u751f\u96fb\u611f\uff08L1\uff09<\/strong>\u9019\u53d6\u6c7a\u65bc <strong>\u96fb\u7e9c\u9577\u5ea6<\/strong> \u548c <strong>\u4f48\u7dda\u4f48\u5c40<\/strong>.<\/p><\/li><\/ul><\/li><li><p><strong>\u8f38\u5165\u8a0a\u865f\u64f7\u53d6\u96fb\u8def<\/strong><\/p><ul><li><p>\u53ef\u80fd\u5305\u62ec <strong>\u4f4e\u901a\u6ffe\u6ce2\u5668\uff08L2\uff0cC2\uff09<\/strong>.<\/p><\/li><\/ul><\/li><\/ol><hr \/><h2><strong>2. \u70ba\u4ec0\u9ebc\u6703\u767c\u751f\u632f\u76ea\uff1f<\/strong><\/h2><p>\u5728\u8ca0\u56de\u6388\u96fb\u58d3\u8a0a\u865f\u7cfb\u7d71\u4e2d\uff0c\u8f38\u5165\u8a0a\u865f\u8a08\u7b97\u5982\u4e0b\uff1a<\/p><p><span class=\"katex\">\u2223Xi\u2032\u2223=\u2223Xi\u2223\u2212\u2223Xf\u2223|X_i&#039;| = |X_i| \u2013 |X_f|<\/span><\/p><p>\u7136\u800c\uff0c\u5982\u679c <strong>\u53cd\u994b\u8a0a\u865f (|Xf|) \u76f8\u79fb\u4e86 180\u00b0<\/strong>\u7b49\u5f0f\u8b8a\u70ba\uff1a<\/p><p><span class=\"katex\">\u2223Xi\u2032\u2223=\u2223Xi\u2223+\u2223Xf\u2223|X_i&#039;| = |X_i| + |X_f|<\/span><\/p><p>\u9019\u610f\u5473\u8457\u5373\u4f7f <strong>\u7121\u8f38\u5165\u8a0a\u865f<\/strong> \u5df2\u61c9\u7528\uff08<strong>|Xi| = 0<\/strong>\uff09\uff0c \u9019 <strong>\u53cd\u994b\u8a0a\u865f\u7dad\u6301\u8f38\u51fa<\/strong>\u5c0e\u81f4 <strong>\u81ea\u6301\u632f\u76ea<\/strong>.<\/p><p>\u632f\u8569\u7684\u767c\u751f\u5fc5\u9808\u6eff\u8db3\u5169\u500b\u689d\u4ef6\uff1a<\/p><ol><li><p><strong>\u74b0\u8def\u589e\u76ca\u5927\u65bc 1\uff1a<\/strong> <strong>|AF| &gt; 1<\/strong><\/p><\/li><li><p><strong>\u76f8\u79fb\u6eff\u8db3\uff1a<\/strong> <strong>\u03c6A + \u03c6F = (2n+1)\u03c0<\/strong><\/p><\/li><\/ol><p>\u7684 <strong>\u76f8\u79fb<\/strong> \u5faa\u74b0\u4e2d\u7684\u6578\u64da\u4f86\u81ea\u591a\u500b\u4f86\u6e90\uff1a<br \/>\u2714 <strong>\u50b3\u8f38\u96fb\u7e9c\u4e2d\u7684\u5bc4\u751f\u96fb\u5bb9 (C1) \u548c\u96fb\u611f (L1)<\/strong><br \/>\u2714 <strong>\u8f38\u5165\u96fb\u8def\u4e2d\u7684\u4f4e\u901a\u6ffe\u6ce2\u5668\u5143\u4ef6\uff08L2\u3001C2\uff09<\/strong><br \/>\u2714 <strong>\u8f38\u51fa\u96fb\u8def\u4e2d\u7684\u6ffe\u6ce2\u96fb\u5bb9\u5668<\/strong><\/p><p>\u5982\u679c <strong>\u7e3d\u76f8\u79fb\u9054180\u00b0<\/strong>\u53ef\u80fd\u6703\u767c\u751f\u81ea\u6fc0\u632f\u76ea\u3002<\/p><hr \/><h2><strong>3. \u5982\u4f55\u9632\u6b62\u632f\u76ea\uff1f<\/strong><\/h2><p>\u70ba\u9632\u6b62\u632f\u76ea\uff0c <strong>\u4ee5\u4e0a\u5169\u500b\u689d\u4ef6\u4e2d\u5fc5\u9808\u6709\u4e00\u500b\u4e0d\u6eff\u8db3\u3002<\/strong> \u5728\u5de5\u4f5c\u983b\u7387\u7bc4\u570d\u5167\u3002<\/p><figure style=\"width: 417px\" class=\"wp-caption alignnone\"><img decoding=\"async\" class=\"size-medium\" src=\"\/wp-content\/uploads\/2023\/06\/self-excited-oscilation-factor.webp\" alt=\"\u57162 \u7121\u632f\u8569\u7684\u8ca0\u56de\u6388\u8ff4\u8def\u689d\u4ef6\" width=\"417\" height=\"415\" \/><figcaption class=\"wp-caption-text\">\u57162 \u7121\u632f\u8569\u7684\u8ca0\u56de\u6388\u8ff4\u8def\u689d\u4ef6<\/figcaption><\/figure><p>\u5982\u5716\u6240\u793a <strong>\u5716 2<\/strong>\u8003\u616e\u5169\u500b\u95dc\u9375\u983b\u7387\uff1a<\/p><ul><li><p><strong>fc\uff1a<\/strong> \u74b0\u8def\u589e\u76ca\u7684\u983b\u7387 <strong>|AF| \u964d\u81f3 0 dB<\/strong>.<\/p><\/li><li><p><strong>fo\uff1a<\/strong> \u74b0\u8def\u76f8\u79fb\u8d85\u904e\u7684\u983b\u7387 <strong>-180\u00b0<\/strong>.<\/p><\/li><\/ul><p>\u70ba\u4e86\u7dad\u6301\u7a69\u5b9a\uff0c <strong>\u589e\u76ca\u61c9\u4f4e\u65bc 0 dB<\/strong> \u7576\u76f8\u79fb\u9054\u5230-180\u00b0\u6642\u3002<\/p><hr \/><h2><strong>4. \u70ba\u4ec0\u9ebc\u96fb\u6d41\u8f38\u51fa\u8a0a\u865f\u66f4\u7a69\u5b9a<\/strong><\/h2><figure style=\"width: 600px\" class=\"wp-caption alignnone\"><img decoding=\"async\" class=\"size-medium\" src=\"\/wp-content\/uploads\/2023\/06\/current-signal-feedback-path.webp\" alt=\"\u5716 3 \u96fb\u6d41\u6e90\u56de\u6388\u8ff4\u8def\" width=\"600\" height=\"406\" \/><figcaption class=\"wp-caption-text\">\u5716 3 \u96fb\u6d41\u6e90\u56de\u6388\u8ff4\u8def<\/figcaption><\/figure><figure style=\"width: 586px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium\" src=\"\/wp-content\/uploads\/2023\/06\/voltage-signal-feedback-path.webp\" alt=\"\u5716 4 \u96fb\u58d3\u6e90\u56de\u994b\u8ff4\u8def\" width=\"586\" height=\"425\" \/><figcaption class=\"wp-caption-text\">\u5716 4 \u96fb\u58d3\u6e90\u56de\u994b\u8ff4\u8def<\/figcaption><\/figure><p><strong>\u96fb\u6d41\u8a0a\u865f\u8f38\u51fa\u96fb\u8def<\/strong> \u4e0d\u592a\u5bb9\u6613\u767c\u751f\u632f\u76ea\uff0c\u56e0\u70ba\uff1a<br \/>\u2714 <strong>\u5b83\u5011\u7684\u56de\u994b\u8def\u5f91\u50c5\u9650\u65bc\u5167\u90e8\u5143\u4ef6\u3002<\/strong> \uff08\u5982\u5716\uff09 <strong>\u5716 3<\/strong>).<br \/>\u2714 <strong>\u5916\u90e8\u8ca0\u8f09\u8b8a\u5316\u5c0d\u76f8\u79fb\u6216\u589e\u76ca\u7684\u5f71\u97ff\u5f88\u5c0f\u3002<\/strong>.<\/p><p>\u76f8\u6bd4\u4e4b\u4e0b\uff0c <strong>\u96fb\u58d3\u8f38\u51fa\u96fb\u8def<\/strong> \uff08\u5716 4\uff09\u5f9e\u4ee5\u4e0b\u65b9\u9762\u7372\u5f97\u56de\u994b <strong>\u8f38\u51fa\u9ede<\/strong>\u610f\u601d\u662f <strong>\u5916\u90e8\u96fb\u7e9c\u548c\u53d6\u6a23\u96fb\u8def<\/strong> \u53ef\u4ee5\u5f71\u97ff\u76f8\u79fb\u548c\u589e\u76ca\u3002\u5982\u679c\u5b83\u5011\u7684\u53c3\u6578\u767c\u751f\u8b8a\u5316\uff0c\u7cfb\u7d71\u5c31\u6703\u767c\u751f\u8b8a\u5316\u3002 <strong>\u53ef\u80fd\u6eff\u8db3\u632f\u76ea\u689d\u4ef6<\/strong>\u5c0e\u81f4\u4e0d\u7a69\u5b9a\u3002<\/p><hr \/><h3><strong>5.\u7d50\u8ad6<\/strong><\/h3><p>\u96fb\u58d3\u578b\u8f38\u51fa\u8a0a\u865f\u5728\u4e0b\u5217\u60c5\u6cc1\u4e0b\u6703\u632f\u76ea\uff1a<br \/>\u2714 <strong>\u5bc4\u751f\u5143\u4ef6\u6703\u5f15\u5165 180\u00b0 \u76f8\u79fb\u3002<\/strong><br \/>\u2714 <strong>\u5728\u6b64\u76f8\u79fb\u4e0b\uff0c\u74b0\u8def\u589e\u76ca\u4ecd\u5927\u65bc 1\u3002<\/strong><\/p><p>\u70ba\u907f\u514d\u632f\u76ea\uff1a<br \/>\u2714 <strong>\u5728\u76f8\u79fb\u9054\u5230 180\u00b0 \u4e4b\u524d\uff0c\u8acb\u78ba\u4fdd\u74b0\u8def\u589e\u76ca\u964d\u4f4e\u5230 0 dB \u4ee5\u4e0b\u3002<\/strong><br \/>\u2714 <strong>\u76e1\u91cf\u6e1b\u5c11\u50b3\u8f38\u96fb\u7e9c\u4e2d\u7684\u5bc4\u751f\u96fb\u5bb9\/\u96fb\u611f\u3002<\/strong><br \/>\u2714 <strong>\u4f7f\u7528\u9069\u7576\u7684\u6ffe\u6ce2\u65b9\u6cd5\u4f86\u7a69\u5b9a\u56de\u6388\u8ff4\u8def\u3002<\/strong><\/p><p>\u76f8\u6bd4\u4e4b\u4e0b\uff0c <strong>\u96fb\u6d41\u578b\u8f38\u51fa<\/strong> \u7531\u65bc\u5b83\u5011\u7684\u7a69\u5b9a\u6027\u66f4\u9ad8\uff0c\u56e0\u6b64\u5b83\u5011 <strong>\u56de\u6388\u8ff4\u8def\u53d7\u5916\u90e8\u8ca0\u8f09\u689d\u4ef6\u7684\u5f71\u97ff\u8f03\u5c0f<\/strong>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>\u00a0 1. \u96fb\u58d3\u8a0a\u865f\u50b3\u8f38\u8def\u5f91 \u5982\u5716 1 \u6240\u793a\uff0c\u96fb\u58d3\u8a0a\u865f\u50b3\u8f38\u7cfb\u7d71\u7531\u4e09\u500b\u95dc\u9375\u7d44\u4ef6\u69cb\u6210\uff1a\u8ca0\u56de\u6388\u96fb\u58d3\u8f38\u51fa\u96fb\u8def\u3001\u8a0a\u865f\u50b3\u8f38\u96fb\u7e9c\uff08\u5305\u62ec\u5bc4\u751f\u96fb\u5bb9 (C1) \u548c\u5bc4\u751f\u96fb\u611f (L1)\uff0c\u5176\u503c\u53d6\u6c7a\u65bc\u96fb\u7e9c\u9577\u5ea6\u548c\u4f48\u7dda\u4f48\u5c40\uff09\u3001\u8f38\u5165\u8a0a\u865f\u64f7\u53d6\u96fb\u8def\uff08\u53ef\u80fd\u5305\u62ec\u4f4e\u901a\u6ffe\u6ce2\u5668 (L2, [\u2026]\uff09\u3002<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"elementor_theme","format":"standard","meta":{"_acf_changed":true,"footnotes":""},"categories":[8],"tags":[49],"class_list":["post-5380","post","type-post","status-publish","format-standard","hentry","category-ta-acutator","tag-input-signal"],"acf":[],"_links":{"self":[{"href":"https:\/\/dclcontrols.com\/zh_tw\/wp-json\/wp\/v2\/posts\/5380","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dclcontrols.com\/zh_tw\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dclcontrols.com\/zh_tw\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dclcontrols.com\/zh_tw\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dclcontrols.com\/zh_tw\/wp-json\/wp\/v2\/comments?post=5380"}],"version-history":[{"count":0,"href":"https:\/\/dclcontrols.com\/zh_tw\/wp-json\/wp\/v2\/posts\/5380\/revisions"}],"wp:attachment":[{"href":"https:\/\/dclcontrols.com\/zh_tw\/wp-json\/wp\/v2\/media?parent=5380"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dclcontrols.com\/zh_tw\/wp-json\/wp\/v2\/categories?post=5380"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dclcontrols.com\/zh_tw\/wp-json\/wp\/v2\/tags?post=5380"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}