{"id":723996,"date":"2024-12-02T08:23:35","date_gmt":"2024-12-02T07:23:35","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=723996"},"modified":"2024-12-02T08:23:35","modified_gmt":"2024-12-02T07:23:35","slug":"%e5%8a%a8%e6%80%81%e6%9c%ba%e6%a2%b0%e5%88%86%e6%9e%90-dma-%e4%bb%8b%e7%bb%8d","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/zh-hans\/%e5%8a%a8%e6%80%81%e6%9c%ba%e6%a2%b0%e5%88%86%e6%9e%90-dma-%e4%bb%8b%e7%bb%8d\/","title":{"rendered":"\u52a8\u6001\u673a\u68b0\u5206\u6790 (DMA) \u4ecb\u7ecd"},"content":{"rendered":"<p class=\"sidekick\">\u52a8\u6001\u673a\u68b0\u5206\u6790 (DMA) \u4ecb\u7ecd\uff1a\u4e86\u89e3DMA\u5728\u6750\u6599\u79d1\u5b66\u4e2d\u7684\u91cd\u8981\u6027\uff0c\u63a2\u7d22\u5982\u4f55\u901a\u8fc7\u6e29\u5ea6\u53d8\u5316\u6d4b\u91cf\u6750\u6599\u7684\u673a\u68b0\u6027\u80fd\uff0c\u63ed\u793a\u5176\u5728\u5de5\u7a0b\u5e94\u7528\u4e2d\u7684\u4f18\u52bf\u3002<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/\u52a8\u6001\u673a\u68b0\u5206\u6790_DMA_\u4ecb\u7ecd.png\" alt=\"\u52a8\u6001\u673a\u68b0\u5206\u6790 (DMA) \u4ecb\u7ecd\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>\u52a8\u6001\u673a\u68b0\u5206\u6790 (DMA) \u4ecb\u7ecd<\/h2>\n<p>\u52a8\u6001\u673a\u68b0\u5206\u6790\uff08DMA\uff09\u662f\u4e00\u79cd\u5206\u6790\u6750\u6599\u5728\u52a8\u6001\u5e94\u529b\u4e0b\u8868\u73b0\u7684\u6280\u672f\u3002\u5b83\u5e7f\u6cdb\u5e94\u7528\u4e8e\u7814\u7a76\u6750\u6599\u7684\u7c98\u5f39\u6027\u7279\u6027\uff0c\u5c24\u5176\u9002\u7528\u4e8e\u805a\u5408\u7269\u3001\u590d\u5408\u6750\u6599\u548c\u91d1\u5c5e\u7b49\u591a\u79cd\u6750\u6599\u3002\u8fd9\u79cd\u5206\u6790\u65b9\u6cd5\u80fd\u591f\u6d4b\u91cf\u6750\u6599\u5728\u6e29\u5ea6\u3001\u9891\u7387\u548c\u5e94\u53d8\u7b49\u6761\u4ef6\u53d8\u5316\u65f6\u7684\u673a\u68b0\u6027\u80fd\u3002<\/p>\n<h2>DMA \u7684\u57fa\u672c\u539f\u7406<\/h2>\n<p>\u5728 DMA \u8fc7\u7a0b\u4e2d\uff0c\u6837\u54c1\u53d7\u5230\u52a8\u6001\u5e94\u529b\u6216\u5e94\u53d8\uff0c\u901a\u5e38\u662f\u4ee5\u6b63\u5f26\u6ce2\u5f62\u5f0f\u65bd\u52a0\u7684\u3002\u901a\u8fc7\u6d4b\u91cf\u6750\u6599\u7684\u5e94\u529b\u548c\u5e94\u53d8\uff0c\u80fd\u591f\u83b7\u5f97\u6750\u6599\u7684\u50a8\u80fd\u6a21\u91cf (E&#8217; \u6216 G&#8217;) \u548c\u635f\u8017\u6a21\u91cf (E&#8221; \u6216 G&#8221;)\u3002\u8fd9\u4e9b\u53c2\u6570\u5206\u522b\u53cd\u6620\u4e86\u6750\u6599\u7684\u50a8\u80fd\u548c\u8017\u80fd\u80fd\u529b\uff0c\u5176\u8ba1\u7b97\u65b9\u5f0f\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>\u50a8\u80fd\u6a21\u91cf\uff1a<em>E&#8217; = \\frac{\\sigma_0}{\\epsilon_0} \\cos(\\delta)<\/em><\/li>\n<li>\u635f\u8017\u6a21\u91cf\uff1a<em>E&#8221; = \\frac{\\sigma_0}{\\epsilon_0} \\sin(\\delta)<\/em><\/li>\n<\/ul>\n<p>\u5176\u4e2d\uff0c\u03c3<sub>0<\/sub> \u662f\u5e94\u529b\u5e45\u503c\uff0c\u03b5<sub>0<\/sub> \u662f\u5e94\u53d8\u5e45\u503c\uff0c\u03b4 \u662f\u76f8\u4f4d\u5dee\u89d2\u3002<\/p>\n<h2>DMA \u7684\u5e94\u7528<\/h2>\n<p>DMA \u5728\u591a\u4e2a\u9886\u57df\u6709\u5e7f\u6cdb\u7684\u5e94\u7528\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4e3b\u8981\u7528\u9014\uff1a<\/p>\n<h3>\u6750\u6599\u7279\u6027\u7814\u7a76<\/h3>\n<p>\u901a\u8fc7 DMA\uff0c\u53ef\u4ee5\u7814\u7a76\u6750\u6599\u7684\u7c98\u5f39\u6027\u884c\u4e3a\uff0c\u5305\u62ec\u73bb\u7483\u5316\u8f6c\u53d8\u6e29\u5ea6\uff08T<sub>g<\/sub>\uff09\u548c\u7194\u878d\u6e29\u5ea6\uff08T<sub>m<\/sub>\uff09\u3002<\/p>\n<h3>\u8d28\u91cf\u63a7\u5236<\/h3>\n<p>DMA \u53ef\u7528\u4e8e\u76d1\u63a7\u6750\u6599\u7684\u8d28\u91cf\uff0c\u786e\u4fdd\u751f\u4ea7\u8fc7\u7a0b\u4e2d\u7684\u4e00\u81f4\u6027\u3002<\/p>\n<h3>\u6027\u80fd\u9884\u6d4b<\/h3>\n<p>\u901a\u8fc7 DMA \u83b7\u53d6\u7684\u6750\u6599\u7279\u6027\u6570\u636e\uff0c\u53ef\u4ee5\u7528\u4e8e\u9884\u6d4b\u6750\u6599\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u6027\u80fd\u548c\u5bff\u547d\u3002<\/p>\n<h2>DMA \u6d4b\u8bd5\u8fc7\u7a0b<\/h2>\n<p>\u4e00\u822c\u6765\u8bf4\uff0cDMA \u6d4b\u8bd5\u5305\u62ec\u4ee5\u4e0b\u51e0\u4e2a\u6b65\u9aa4\uff1a<\/p>\n<ol>\n<li>\u6837\u54c1\u51c6\u5907\uff1a\u6309\u7167\u89c4\u5b9a\u7684\u5c3a\u5bf8\u548c\u5f62\u72b6\u5236\u5907\u6837\u54c1\u3002<\/li>\n<li>\u6837\u54c1\u5b89\u88c5\uff1a\u5c06\u6837\u54c1\u5b89\u88c5\u5728 DMA \u4eea\u5668\u7684\u5939\u5177\u4e2d\u3002<\/li>\n<li>\u8bbe\u5b9a\u6d4b\u8bd5\u6761\u4ef6\uff1a\u6839\u636e\u9700\u8981\u8bbe\u5b9a\u6e29\u5ea6\u3001\u9891\u7387\u548c\u5e94\u53d8\u7b49\u6761\u4ef6\u3002<\/li>\n<li>\u6570\u636e\u91c7\u96c6\uff1a\u5f00\u59cb\u6d4b\u8bd5\u5e76\u91c7\u96c6\u6570\u636e\u3002<\/li>\n<li>\u6570\u636e\u5206\u6790\uff1a\u5904\u7406\u548c\u5206\u6790\u6570\u636e\uff0c\u83b7\u5f97\u6709\u7528\u7684\u6750\u6599\u7279\u6027\u53c2\u6570\u3002<\/li>\n<\/ol>\n<h2>\u603b\u7ed3<\/h2>\n<p>\u52a8\u6001\u673a\u68b0\u5206\u6790\uff08DMA\uff09\u662f\u4e00\u79cd\u5f3a\u5927\u4e14\u9ad8\u5ea6\u7075\u654f\u7684\u6d4b\u8bd5\u65b9\u6cd5\uff0c\u80fd\u591f\u4e3a\u5404\u79cd\u6750\u6599\u63d0\u4f9b\u91cd\u8981\u7684\u673a\u68b0\u6027\u80fd\u6570\u636e\u3002\u5b83\u5728\u7814\u7a76\u6750\u6599\u7279\u6027\u3001\u8d28\u91cf\u63a7\u5236\u548c\u6027\u80fd\u9884\u6d4b\u7b49\u65b9\u9762\u53d1\u6325\u7740\u91cd\u8981\u4f5c\u7528\uff0c\u662f\u73b0\u4ee3\u6750\u6599\u79d1\u5b66\u4e0e\u5de5\u7a0b\u9886\u57df\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u5de5\u5177\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u52a8\u6001\u673a\u68b0\u5206\u6790 (DMA) \u4ecb\u7ecd\uff1a\u4e86\u89e3DMA\u5728\u6750\u6599\u79d1\u5b66\u4e2d\u7684\u91cd\u8981\u6027\uff0c\u63a2\u7d22\u5982\u4f55\u901a\u8fc7\u6e29\u5ea6\u53d8\u5316\u6d4b\u91cf\u6750\u6599\u7684\u673a\u68b0\u6027\u80fd\uff0c\u63ed\u793a\u5176\u5728\u5de5\u7a0b\u5e94\u7528\u4e2d\u7684\u4f18\u52bf\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[134],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u52a8\u6001\u673a\u68b0\u5206\u6790 (DMA) \u4ecb\u7ecd<\/title>\n<meta name=\"description\" content=\"\u52a8\u6001\u673a\u68b0\u5206\u6790 (DMA) 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