{"id":521,"date":"2026-10-17T09:41:27","date_gmt":"2026-10-17T01:41:27","guid":{"rendered":"https:\/\/ezblog.cn\/?p=521"},"modified":"2026-10-17T16:04:29","modified_gmt":"2026-10-17T08:04:29","slug":"%e6%bb%a4%e6%b3%a2%e5%99%a8%e9%a2%91%e7%8e%87%e4%b8%8e-q","status":"publish","type":"post","link":"https:\/\/ezblog.cn\/?p=521","title":{"rendered":"\u6ee4\u6ce2\u5668\u9891\u7387\u4e0e Q"},"content":{"rendered":"\n<p>\u4e8c\u9636\u6ee4\u6ce2\u5668\u6709\u4e24\u4e2a\u4e0d\u540c\u7684\u7279\u6027\uff1a\u9891\u7387\u5c3a\u5ea6\u548c\u963b\u5c3c\u3002\u56fa\u6709\u9891\u7387\u51b3\u5b9a\u7535\u8def\u54cd\u5e94\u7684\u5feb\u6162\uff0c\u54c1\u8d28\u56e0\u6570\nQ \u51b3\u5b9a\u632f\u8361\u884c\u4e3a\u88ab\u6291\u5236\u7684\u7a0b\u5ea6\u3002<\/p>\n\n<figure><img decoding=\"async\" src=\"https:\/\/ezblog.cn\/wp-content\/uploads\/2026\/10\/08_circuit.png\" style=\"max-width:100%;height:auto;\" alt=\"\u53cc\u79ef\u5206\u5668\u6709\u6e90 RC \u6ee4\u6ce2\u5668\u793a\u4f8b\u3002\\(C_1\\) \u548c 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display=\"inline\" xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><msub><mi>R<\/mi><mn>1<\/mn><\/msub><annotation encoding=\"application\/x-tex\">R_1<\/annotation><\/semantics><\/math>\n\u63d0\u4f9b\u5c40\u90e8\u963b\u5c3c\uff0c\u5916\u73af\u53cd\u9988\u8026\u5408\u4e24\u4e2a\u72b6\u6001\u3002BP \u548c LP\n\u5206\u522b\u8868\u793a\u5e26\u901a\u548c\u4f4e\u901a\u8282\u70b9\u3002\u8be5\u56fe\u7528\u4e8e\u8bf4\u660e\u72b6\u6001\u4e0e\u53cd\u9988\u7ed3\u6784\uff0c\u4e0e\u6587\u4e2d\u4e00\u822c\u53c2\u6570\u5e76\u975e\u4e00\u4e00\u5bf9\u5e94\u3002<\/figcaption><\/figure>\n\n\n<p>\u5bf9\u6807\u51c6\u4e8c\u9636\u4f4e\u901a\u54cd\u5e94\uff0c<\/p>\n<p><math display=\"block\" xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mi>H<\/mi><mrow><mo stretchy=\"true\" form=\"prefix\">(<\/mo><mi>s<\/mi><mo stretchy=\"true\" form=\"postfix\">)<\/mo><\/mrow><mo>=<\/mo><mfrac><mrow><mi>K<\/mi><msubsup><mi>\u03c9<\/mi><mn>0<\/mn><mn>2<\/mn><\/msubsup><\/mrow><mrow><msup><mi>s<\/mi><mn>2<\/mn><\/msup><mo>+<\/mo><mrow><mo stretchy=\"true\" form=\"prefix\">(<\/mo><msub><mi>\u03c9<\/mi><mn>0<\/mn><\/msub><mi>\/<\/mi><mi>Q<\/mi><mo stretchy=\"true\" form=\"postfix\">)<\/mo><\/mrow><mi>s<\/mi><mo>+<\/mo><msubsup><mi>\u03c9<\/mi><mn>0<\/mn><mn>2<\/mn><\/msubsup><\/mrow><\/mfrac><mo>,<\/mo><\/mrow><annotation encoding=\"application\/x-tex\">\nH(s)=\\frac{K\\omega_0^2}{s^2+(\\omega_0\/Q)s+\\omega_0^2},\n<\/annotation><\/semantics><\/math><\/p>\n<p>\u5176\u4e2d\n<math display=\"inline\" xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mi>K<\/mi><annotation encoding=\"application\/x-tex\">K<\/annotation><\/semantics><\/math>\n\u4e3a\u76f4\u6d41\u589e\u76ca\uff0c<math display=\"inline\" xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><msub><mi>\u03c9<\/mi><mn>0<\/mn><\/msub><annotation encoding=\"application\/x-tex\">\\omega_0<\/annotation><\/semantics><\/math>\n\u4e3a\u56fa\u6709\u89d2\u9891\u7387\u3002\u4e00\u6b21\u9879\u7cfb\u6570\u643a\u5e26\u963b\u5c3c\u4fe1\u606f\u3002\u56fa\u6709\u9891\u7387\u56fa\u5b9a\u65f6\uff0cQ\n\u8d8a\u9ad8\u963b\u5c3c\u8d8a\u5c0f\uff1a\u9636\u8dc3\u540e\u7684\u632f\u94c3\u8870\u51cf\u66f4\u6162\uff0c\u8db3\u591f\u9ad8\u7684 Q\n\u8fd8\u4f1a\u5728\u9891\u54cd\u4e2d\u5f62\u6210\u5cf0\u503c\u3002\u8f83\u4f4e\u7684 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\u4e0d\u53d8\u3002\u53ea\u6539\u53d8\u963b\u5c3c\u652f\u8def\u901a\u5e38\u4e5f\u4f1a\u6539\u53d8\nQ\u3002\u56e0\u6b64\u9891\u7387\u8c03\u8c10\u6700\u597d\u5728\u6240\u9700\u8de8\u5bfc\u6bd4\u4fdd\u6301\u7a33\u5b9a\u7684\u524d\u63d0\u4e0b\u8fdb\u884c\u3002<\/p>\n<p>\u56fa\u6709\u9891\u7387\u4e0d\u80fd\u76f4\u63a5\u5f53\u4f5c \u22123 dB\n\u622a\u6b62\u9891\u7387\u3002\u5728\u8be5\u9891\u7387\u5904\uff0c\u5e45\u5ea6\u76f8\u5bf9\u4e8e\u76f4\u6d41\u7684\u6bd4\u503c\u5c31\u662f Q\u3002\u5728\u5e38\u89c1\u7684 Butterworth\n\u60c5\u5f62\u4e0b\u4e24\u8005\u91cd\u5408\uff0c\u6b64\u65f6 Q \u7ea6\u4e3a 0.707\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e8c\u9636\u6ee4\u6ce2\u5668\u6709\u4e24\u4e2a\u4e0d\u540c\u7684\u7279\u6027\uff1a\u9891\u7387\u5c3a\u5ea6\u548c\u963b\u5c3c\u3002\u56fa\u6709\u9891\u7387\u51b3\u5b9a\u7535\u8def\u54cd\u5e94\u7684\u5feb\u6162\uff0c\u54c1\u8d28\u56e0\u6570 Q \u51b3\u5b9a\u632f\u8361\u884c\u4e3a\u88ab\u6291\u5236\u7684\u7a0b\u5ea6\u3002 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aria-hidden=\"true\"><\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[12],"tags":[],"views":11,"_links":{"self":[{"href":"https:\/\/ezblog.cn\/index.php?rest_route=\/wp\/v2\/posts\/521"}],"collection":[{"href":"https:\/\/ezblog.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ezblog.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ezblog.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ezblog.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=521"}],"version-history":[{"count":2,"href":"https:\/\/ezblog.cn\/index.php?rest_route=\/wp\/v2\/posts\/521\/revisions"}],"predecessor-version":[{"id":540,"href":"https:\/\/ezblog.cn\/index.php?rest_route=\/wp\/v2\/posts\/521\/revisions\/540"}],"wp:attachment":[{"href":"https:\/\/ezblog.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=521"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ezblog.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=521"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ezblog.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=521"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}