{"id":15956,"date":"2021-11-03T10:36:43","date_gmt":"2021-11-03T02:36:43","guid":{"rendered":"https:\/\/techclass.wfjydl.com\/?p=15956"},"modified":"2021-11-03T11:55:52","modified_gmt":"2021-11-03T03:55:52","slug":"%e7%94%b5%e6%9c%ba%e7%9a%84pwm%e9%a9%b1%e5%8a%a8%ef%bc%9apwm%e5%91%a8%e6%9c%9f%e4%b8%8e%e7%94%b5%e6%9c%ba%e7%9a%84%e7%94%b5%e6%b0%94%e6%97%b6%e9%97%b4%e5%b8%b8%e6%95%b0%e4%b9%8b%e9%97%b4%e7%9a%84","status":"publish","type":"post","link":"https:\/\/techclass.wfjydl.com\/knowledge\/tech-info\/engineer\/column\/15956","title":{"rendered":"\u7535\u673a\u7684PWM\u9a71\u52a8\uff1aPWM\u5468\u671f\u4e0e\u7535\u673a\u7684\u7535\u6c14\u65f6\u95f4\u5e38\u6570\u4e4b\u95f4\u7684\u5173\u7cfb"},"content":{"rendered":"<p>\u5173\u4e8e\u6709\u5237\u76f4\u6d41\u7535\u673a\u7684PWM\u9a71\u52a8\uff0c\u6709\u4e00\u4e2a\u6ce8\u610f\u4e8b\u9879\uff1a\u201c\u76f8\u6bd4\u4e8e\u7535\u673a\u7684\u7535\u6c14\u65f6\u95f4\u5e38\u6570\uff0cPWM\u5468\u671f\u8981\u8db3\u591f\u77ed\u201d\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u6765\u63a2\u8ba8\u4e00\u4e0b\u8fd9\u4e2a\u201c\u8db3\u591f\u77ed\u7684PWM\u5468\u671f\u201d\u5177\u4f53\u662f\u591a\u5c11\u3002<\/p>\n<h2>PWM\u9a71\u52a8\u65f6\uff0c\u76f8\u6bd4\u4e8e\u7535\u673a\u7684\u7535\u6c14\u65f6\u95f4\u5e38\u6570\uff0cPWM\u5468\u671f\u8981\u8db3\u591f\u77ed\u7684\u542b\u4e49\u662f\u4ec0\u4e48\uff1f<\/h2>\n<p>\u9996\u5148\uff0c\u6211\u4eec\u6765\u770b\u6570\u503c\u4e0a\u7684\u76f8\u5173\u6027\u3002\u5360\u7a7a\u6bd4m=0.5\u65f6\u7535\u6d41\u7eb9\u6ce2\u503c\u6700\u5927\uff0c\u201c\u7535\u673a\u7684\u7535\u6c14\u65f6\u95f4\u5e38\u6570\u03c4\/PWM\u5468\u671ftpwm\u201d\u4e0e\u201c\u7535\u6d41\u7eb9\u6ce2\/\u5e73\u5747\u7535\u6d41\u201d\u7684\u5173\u7cfb\u5982\u4e0b\u8868\u6240\u793a\uff1a<\/p>\n<style>\n\t.tbl_sum 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alt=\"\u7535\u673a\u7aef\u5b50\u95f4\u77ed\u8def\u3001\u7535\u6d41\u518d\u751f\u65f6\u7684\u7b49\u6548\u7535\u8def\" class=\"alignnone size-full wp-image-15959\" \/><\/p>\n<p>Ia\uff1a\u7535\u673a\u7535\u6d41<br \/>\nR\uff1a\u7535\u673a\u7684\u7b49\u6548\u7535\u963b<br \/>\nL\uff1a\u7535\u673a\u7684\u7b49\u6548\u7535\u611f<br \/>\nEc\uff1a\u7535\u673a\u7684\u53d1\u7535\u7535\u538b<\/p>\n<\/div>\n<p>\u6c42\u6b64\u65f6\u7684\u77ac\u6001\u7535\u6d41i\u3002\u5728\u65b9\u7a0b\uff082\uff09\u4e2d\uff0c\u8bbeEa\uff1d0V\u5373\u53ef\uff0c\u56e0\u6b64i\u4e3a<br \/>\n\u2003i\uff1dA\u30fbexp(\uff0dR\u30fbt\/L) \u2026\u2026\uff085\uff09<br \/>\n\u5f53t=0\u65f6\uff0c\u6709\u5237\u76f4\u6d41\u7535\u673aPWM\u9a71\u52a8\u77ac\u6001\u7535\u6d41\u6ce2\u5f62\u03c4\/tpwm\u53d8\u5316\u65f6\uff0c\u5047\u8bbe\u6d41\u8fc7i_0\u7684\u521d\u59cb\u503c\u7535\u6d41\uff0c\u5219<br \/>\n\u2003A\uff1di_0 \u2026\u2026\uff086\uff09<br \/>\n\u6240\u4ee5<br \/>\n\u2003i\uff1di_0\u30fbexp(\uff0dR\u30fbt\/L) 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