{"id":8859,"date":"2021-03-24T00:00:03","date_gmt":"2021-03-23T15:00:03","guid":{"rendered":"https:\/\/techclass.wfjydl.com\/?p=8859"},"modified":"2021-11-04T17:07:37","modified_gmt":"2021-11-04T09:07:37","slug":"%e4%bd%bf%e7%94%a8pwm%e8%be%93%e5%87%ba%e6%96%b9%e5%bc%8f%e9%a9%b1%e5%8a%a8%e6%9c%89%e5%88%b7%e7%9b%b4%e6%b5%81%e7%94%b5%e6%9c%ba%ef%bc%9a%e2%80%a8%e6%8d%9f%e8%80%97%e5%92%8c%e6%b3%a8%e6%84%8f","status":"publish","type":"post","link":"https:\/\/techclass.wfjydl.com\/knowledge\/motor\/basics\/basics-03\/346","title":{"rendered":"\u4f7f\u7528PWM\u8f93\u51fa\u65b9\u5f0f\u9a71\u52a8\u6709\u5237\u76f4\u6d41\u7535\u673a : \u635f\u8017\u548c\u6ce8\u610f\u4e8b\u9879"},"content":{"rendered":"<p>\u5728<a href=\"\/knowledge\/motor\/basics\/basics-03\/328\">\u4e0a\u4e00\u7bc7\u6587\u7ae0<\/a>\u4e2d\u4ecb\u7ecd\u4e86PWM\u9a71\u52a8\u65b9\u5f0f\u4e0b\u7684\u6709\u5237\u76f4\u6d41\u7535\u673a\u7684\u56db\u79cd\u7535\u6d41\u518d\u751f\u65b9\u6cd5\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u6709\u5237\u76f4\u6d41\u7535\u673a\u7684PWM\u9a71\u52a8\u65f6\u7684\u6ce8\u610f\u4e8b\u9879\uff1a\u635f\u8017\u548c\u5f00\u5173\u65b9\u6cd5\u3002<\/p>\n<h2>\u4f7f\u7528PWM\u8f93\u51fa\u65b9\u5f0f\u9a71\u52a8\u6709\u5237\u76f4\u6d41\u7535\u673a\uff1a\u635f\u8017\u7684\u601d\u8def<\/h2>\n<p>\u7531\u4e8ePWM\u9a71\u52a8\u662f\u8109\u51b2\u9a71\u52a8\uff0c\u56e0\u6b64\u5176\u529f\u8017\u4ec5\u662f\u4e00\u4e2a\u5468\u671f\u5185\u7535\u673a\u7684\u7535\u538b\u65bd\u52a0\uff08\u5bfc\u901a\uff09\u671f\u95f4\u7684\u529f\u8017\u548c\u7535\u6d41\u518d\u751f\uff08\u5173\u65ad\uff09\u671f\u95f4\u7684\u529f\u8017\u7684\u5e73\u5747\u503c\u3002\u4e25\u683c\u6765\u8bb2\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u53ef\u4ee5\u5206\u7535\u538b\u65bd\u52a0\u671f\u95f4\uff08\u7ea2\u8272\uff09\u3001\u7535\u6d41\u518d\u751f\u671f\u95f4\uff08\u84dd\u8272\uff09\u548c\u8f6c\u6362\u671f\u95f4\uff08\u9ec4\u8272\uff09\u4e09\u79cd\u72b6\u6001\u7684\u529f\u8017\u6765\u8003\u8651\u3002\u901a\u5e38\uff0c\u7a33\u6001\u671f\u95f4\u7684\u635f\u8017\u4e3a\u4f20\u5bfc\u635f\u8017\uff0c\u5f00\/\u5173\u8f6c\u6362\u671f\u95f4\u7684\u635f\u8017\u4e3a\u5f00\u5173\u635f\u8017\u3002<\/p>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2018\/12\/MT1-19_f1.gif\" alt=\"\u4f7f\u7528PWM\u8f93\u51fa\u65b9\u5f0f\u9a71\u52a8\u6709\u5237\u76f4\u6d41\u7535\u673a\uff1a\u635f\u8017\"><\/p>\n<p>\u25cf\u65bd\u52a0\u7535\u538b\u671f\u95f4\u7684\u529f\u8017 <br \/>\n\uff08a\uff09\u56fe\u663e\u793a\u4e86\u65bd\u52a0\u7535\u538b\u65f6\u7684\u5f00\u5173\uff08MOSFET\uff09\u72b6\u6001\u3002\u7531\u4e8e\u7535\u6d41\u6d41\u8fc7\u4e24\u4e2aMOSFET\u5bfc\u901a\u7684\u8def\u5f84\uff0c\u56e0\u6b64\u8fd9\u91cc\u7684\u635f\u8017\u4e3a<em>\u5bfc\u901a\u7684MOSFET\u7684\u5bfc\u901a\u7535\u963b\u4e4b\u548c\u00d7\u7535\u6d41\u7684\u5e73\u65b9<\/em>\u3002<\/p>\n<p>\u25cf\u7535\u6d41\u518d\u751f\u671f\u95f4\u7684\u529f\u8017<br \/>\n\u5982\u4e0a\u4e00\u7bc7\u6587\u7ae0\u4e2d\u6240\u8ff0\uff0c\u6709\u56db\u79cd\u7535\u6d41\u518d\u751f\u7684\u65b9\u6cd5\uff0c\u5e76\u4e14\u7535\u6d41\u8def\u5f84\u4e0d\u540c\u635f\u8017\u4e5f\u4e0d\u540c\u3002<\/p>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2018\/12\/MT1-19_f2.gif\" alt=\"\u7535\u6d41\u518d\u751f\u7684\u65b9\u6cd5\"><\/p>\n<p>\u5728\uff08b\uff09\u548c\uff08e\uff09\u4e2d\uff0c\u7531\u4e8e\u4e24\u4e2a\u5bfc\u901a\u7684MOSFET\u6210\u4e3a\u7535\u6d41\u8def\u5f84\uff0c\u56e0\u6b64\uff0c\u635f\u8017\u4e3a<em>\u5bfc\u901a\u7684MOSFET\u7684\u5bfc\u901a\u7535\u963b\u4e4b\u548c\u00d7\u7535\u6d41\u7684\u5e73\u65b9<\/em>\u3002<\/p>\n<p>\u5728\uff08d\uff09\u4e2d\uff0c\u7531\u4e8e\u7535\u6d41\u7ecf\u7531\u4e24\u4e2aMOSFET\u7684\u5bc4\u751f\u4e8c\u6781\u7ba1\uff0c\u56e0\u6b64\u635f\u8017\u662f<em>\u5404\u5bc4\u751f\u4e8c\u6781\u7ba1\u7684VF\u4e4b\u548c\u00d7\u7535\u6d41<\/em>\u3002<\/p>\n<p>\u5728\uff08c\uff09\u4e2d\uff0c\u7531\u4e8e\u7535\u6d41\u7ecf\u7531\u5bfc\u901a\u7684MOSFET\u548c\u5173\u65ad\u7684MOSFET\u7684\u5bc4\u751f\u4e8c\u6781\u7ba1\uff0c\u56e0\u6b64\u635f\u8017\u662f<em>\u5bfc\u901a\u7684MOSFET\u7684\u5bfc\u901a\u7535\u963b\u00d7\u7535\u6d41\u7684\u5e73\u65b9\uff0b\u5173\u65ad\u7684MOSFET\u7684\u5bc4\u751f\u4e8c\u6781\u7ba1\u7684VF\u00d7\u7535\u6d41<\/em>\u3002<\/p>\n<p>\u25cf \u8f6c\u6362\u65f6\u7684\u635f\u8017 <br \/>\n\u8fd9\u9879\u6709\u4e9b\u590d\u6742\u3002 \u2028\u901a\u5e38\uff0c\u5f00\u5173\u635f\u8017\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u516c\u5f0f\u6765\u8ba1\u7b97\u3002<\/p>\n<p style=\"margin-left: 30px;\">\u8f6c\u6362\u65f6\u7684\u635f\u8017=0.5\u00d7Ea\u00d7I\u00d7(tr+tf)\u00d7fsw\u00a0<br \/>\nEa\uff1a\u65bd\u52a0\u7535\u538b\uff0cI\uff1a\u7535\u6d41\uff0ctr\uff1a\u4e0a\u5347\u65f6\u95f4\uff0ctf\uff1a\u4e0b\u964d\u65f6\u95f4\uff0cfsw\uff1a\u5f00\u5173\u9891\u7387<\/p>\n<p>\u4f46\u662f\uff0ctr\u548cfr\u9700\u8981\u6839\u636e\u5b9e\u9645\u6ce2\u5f62\u6c42\u5f97\uff0c\u800c\u5b9e\u9645\u6ce2\u5f62\u5e76\u4e0d\u603b\u662f\u5982\u56fe\u6240\u793a\u7684\u6574\u9f50\u7ebf\u5f62\uff0c\u56e0\u6b64\u9700\u8981\u8003\u8651\u5230\u8fd9\u4e00\u70b9\u3002\u53e6\u5916\uff0c\u5bf9\u65bd\u52a0\u7684\u7535\u538b\u548c\u7535\u6d41\u8fdb\u884c\u5b9e\u9645\u6d4b\u91cf\u66f4\u80fd\u83b7\u5f97\u53ef\u9760\u7684\u7ed3\u679c\u3002<\/p>\n<h2>\u4f7f\u7528PWM\u8f93\u51fa\u65b9\u5f0f\u9a71\u52a8\u7684\u6709\u5237\u76f4\u6d41\u7535\u673a\uff1a\u6ce8\u610f\u4e8b\u9879<\/h2>\n<p>\u25cf\u8f6c\u6362\u65f6\u7684\u635f\u8017\u548c\u566a\u58f0<br \/>\n\u4ece\u524d\u9762\u7684\u516c\u5f0f\u53ef\u4ee5\u770b\u51fa\uff0c\u968f\u7740\u4e0a\u5347\u65f6\u95f4tr\u548c\u4e0b\u964d\u65f6\u95f4tf\u53d8\u5feb\uff0c\u8f6c\u6362\u635f\u8017\uff08\u5373\u5f00\u5173\u635f\u8017\uff09\u4f1a\u53d8\u5c0f\u3002\u5f00\u5173\u901f\u5ea6\uff08\u538b\u6446\u7387\uff09\u8d8a\u5feb\uff0c\u5f00\u5173\u635f\u8017\u8d8a\u5c0f\uff0c\u6700\u7ec8\u529f\u8017\u8d8a\u5c0f=\u6548\u7387\u8d8a\u9ad8\uff0c\u4f46\u53e6\u4e00\u65b9\u9762\uff0c\u5f00\u5173\u566a\u58f0\u4e5f\u4f1a\u589e\u52a0\u3002\u8fd9\u662f\u56e0\u4e3a\u6548\u7387\u548c\u566a\u58f0\u4e4b\u95f4\u5b58\u5728\u6b64\u8d77\u5f7c\u6d88\u7684\u77db\u76fe\u5173\u7cfb\uff0c\u56e0\u6b64\u9700\u8981\u5728\u4e24\u8005\u4e4b\u95f4\u627e\u5230\u6298\u8877\u65b9\u6848\u3002<\/p>\n<p>\u25cf\u9ad8\u8fb9\/\u4f4e\u8fb9\u5f00\u5173\u5207\u6362\u65f6\u5e8f<br \/>\n\u8fd9\u662f\u540c\u6b65\u6574\u6d41\u5f00\u5173\u7a33\u538b\u5668\u5fc5\u4e0d\u53ef\u5c11\u7684\u63a7\u5236\uff0c\u5173\u4e8eH\u6865\u7684\u9ad8\u8fb9\/\u4f4e\u8fb9\u5bf9\uff08\u5728\u4e0a\u56fe\u4e2d\u4e3aQ1\/Q2\u3001Q3\/Q4\uff09\u7684ON\/OFF\uff0c\u5fc5\u987b\u63a7\u5236H\u6865\uff0c\u4f7f\u9ad8\u8fb9\u548c\u4f4e\u8fb9\u4e0d\u53d1\u751f\u540c\u65f6\u5bfc\u901a\u671f\u95f4\u3002\u5982\u679c\u5b83\u4eec\u540c\u65f6\u5bfc\u901a\uff0c\u5219\u7535\u6e90\u548cGND\u5c06\u4f1a\u77ed\u8def\uff0c\u5e76\u53ef\u80fd\u4f1a\u6d41\u8fc7\u88ab\u79f0\u4e3a\u201c\u76f4\u901a\uff08Shoot Through\uff09\u7535\u6d41\u7684\u5927\u7535\u6d41\uff0c\u751a\u81f3\u8fd8\u4f1a\u9020\u6210\u635f\u574f\u3002<\/p>\n<p>\u4e3a\u4e86\u9632\u6b62\u540c\u65f6\u5bfc\u901a\uff0c\u9700\u8981\u8bbe\u7f6e\u4e00\u4e2a\u63a7\u5236\u7535\u8def\uff0c\u4ee5\u5b9e\u73b0\u5305\u542b\u53ef\u4ee5\u4f7f\u9ad8\u4f4e\u8fb9\u5f00\u5173\u540c\u65f6\u5173\u65ad\u671f\u95f4\uff08\u4fd7\u79f0\u201c\u6b7b\u533a\u65f6\u95f4\u201d\uff09\u7684\u5f00\u5173\u52a8\u4f5c\u3002\u4f46\u662f\uff0c\u6b7b\u533a\u65f6\u95f4\u6bb5\u4f1a\u6210\u4e3a\u635f\u8017\uff0c\u9700\u8981\u5c3d\u53ef\u80fd\u5730\u7f29\u77ed\u8be5\u65f6\u95f4\u6bb5\uff0c\u5e76\u9700\u8981\u975e\u5e38\u5148\u8fdb\u7684\u63a7\u5236\u4ee5\u540c\u65f6\u517c\u987e\u9ad8\u6548\u9ad8\u901f\u5f00\u5173\uff08\u8f6c\u6362\u901f\u7387\uff09\u3002\u5b9e\u9645\u4e0a\uff0c\u5f88\u96be\u7528\u5916\u90e8\u7535\u8def\u6765\u7ec4\u6210\u8fd9\u6837\u7684\u63a7\u5236\u7535\u8def\uff0c\u56e0\u6b64\u901a\u5e38\u4f7f\u7528\u7535\u673a\u9a71\u52a8\u5668IC\u4e2d\u914d\u5907\u7684\u9632\u6b62\u540c\u65f6\u5bfc\u901a\u7684\u7535\u8def\u3002<\/p>\n<p>\u25cfPWM\u9891\u7387<br \/>\n\u5f00\u5173\u635f\u8017\u968f\u7740PWM\u9891\u7387\uff08\u5373\u7535\u538b\u65bd\u52a0\u548c\u7535\u6d41\u518d\u751f\u5468\u671f\uff09\u7684\u589e\u52a0\u800c\u589e\u52a0\u3002\u4ece\u524d\u9762\u7684\u516c\u5f0f\u4e2d\u4e5f\u53ef\u4ee5\u6e05\u695a\u5730\u770b\u51fa\u8fd9\u4e00\u70b9\u3002\u5f53\u5e0c\u671b\u901a\u8fc7\u589e\u52a0\u9891\u7387\u6765\u51cf\u8f7b\u7535\u6d41\u7eb9\u6ce2\u65f6\uff0c\u5c31\u9700\u8981\u5728\u9891\u7387\u4e0e\u6548\u7387\u4e4b\u95f4\u8fdb\u884c\u6743\u8861\u3002<\/p>\n<p>\u25cf\u786e\u8ba4\u7535\u673a\u9a71\u52a8\u5668IC\u662f\u5426\u652f\u6301PWM\u9a71\u52a8 <br \/>\n\u5f88\u7b80\u5355\uff0c\u5982\u679c\u5728\u7535\u673a\u9a71\u52a8\u5668IC\u7684\u6280\u672f\u89c4\u683c\u4e66\u4e2d\u6ca1\u6709\u201c\u652f\u6301PWM\u9a71\u52a8\u201d\u7684\u63cf\u8ff0\uff0c\u5219\u6709\u53ef\u80fd\u65e0\u6cd5\u8fdb\u884cPWM\u9a71\u52a8\u3002\u5f53\u7279\u522b\u5e0c\u671b\u7528PWM\u65b9\u5f0f\u9a71\u52a8\u67d0\u6b3e\u9a71\u52a8\u5668\u65f6\uff0c\u5c31\u9700\u8981\u4e0e\u5236\u9020\u5546\u786e\u8ba4\u3002<\/p>\n<p>\u5982\u679c\u7528PWM\u65b9\u5f0f\u9a71\u52a8\u4e86\u4e0d\u652f\u6301PWM\u9a71\u52a8\u7684\u9a71\u52a8\u5668\uff0c\u5219\u5f88\u6709\u53ef\u80fd\u65e0\u6cd5\u5de5\u4f5c\uff0c\u5373\u4f7f\u5de5\u4f5c\u4e5f\u4f1a\u53d1\u751f\u8bef\u52a8\u4f5c\u6216\u8005\u9700\u8981\u5916\u7f6e\u90e8\u4ef6\u6216\u7535\u8def\uff0c\u56e0\u6b64\u539f\u5219\u4e0a\u4e0d\u5efa\u8bae\u5c1d\u8bd5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728\u4e0a\u4e00\u7bc7\u6587\u7ae0\u4e2d\u4ecb\u7ecd\u4e86PWM\u9a71\u52a8\u65b9\u5f0f\u4e0b\u7684\u6709\u5237\u76f4\u6d41\u7535\u673a\u7684\u56db\u79cd\u7535\u6d41\u518d\u751f\u65b9\u6cd5\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u6709\u5237\u76f4\u6d41\u7535\u673a\u7684PWM\u9a71\u52a8\u65f6\u7684\u6ce8\u610f\u4e8b\u9879\uff1a\u635f\u8017\u548c\u5f00\u5173\u65b9\u6cd5\u3002 \u4f7f\u7528PWM\u8f93\u51fa\u65b9\u5f0f\u9a71\u52a8\u6709\u5237\u76f4\u6d41\u7535\u673a\uff1a\u635f\u8017\u7684\u601d\u8def \u7531\u4e8ePWM\u9a71\u52a8\u662f\u8109\u51b2\u9a71\u52a8\uff0c\u56e0\u6b64\u5176\u529f\u8017 [&hellip;]","protected":false},"author":4,"featured_media":16144,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1274],"tags":[1250,1331,1330,1329,1328,1307,1306,1290,1257,1221,1249,1248,1247,1246,1245,1226,1223,1222],"class_list":["post-8859","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-basics-03","tag-1250","tag-1331","tag-1330","tag-pwm","tag-1307","tag-h","tag-dc","tag-1221","tag-1249","tag-1248","tag-1246","tag-1245","tag-1226","tag-1223","tag-1222"],"acf":[],"wps_subtitle":"","_links":{"self":[{"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/posts\/8859","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/comments?post=8859"}],"version-history":[{"count":12,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/posts\/8859\/revisions"}],"predecessor-version":[{"id":16150,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/posts\/8859\/revisions\/16150"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/media\/16144"}],"wp:attachment":[{"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/media?parent=8859"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/categories?post=8859"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/tags?post=8859"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}