{"id":6047,"date":"2023-12-21T12:08:31","date_gmt":"2023-12-21T03:08:31","guid":{"rendered":"https:\/\/now0930.pe.kr\/wordpress\/?p=6047"},"modified":"2026-10-04T08:05:43","modified_gmt":"2026-10-03T23:05:43","slug":"oltf-cltf-in-feedback-system","status":"publish","type":"post","link":"https:\/\/now0930.pe.kr\/wordpress\/oltf-cltf-in-feedback-system\/","title":{"rendered":"OLTF, CLTF in feedback system"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">feedback system\uc5d0\uc11c open loop, closed loop\uac00 \ud5f7\uac08\ub9bc. \ub3d9\uc601\uc0c1 \ub9c8\uc9c0\ub9c9\uc5d0 closed loop transfer fucntion\uc740 Routh-Hurwitz Criteria \ub9d0\uace0 \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uc74c.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1498\" height=\"2048\" src=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2023\/12\/image.png\" alt=\"\" class=\"wp-image-6048\" srcset=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2023\/12\/image.png 1498w, https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2023\/12\/image-768x1050.png 768w, https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2023\/12\/image-1124x1536.png 1124w\" sizes=\"auto, (max-width: 1498px) 100vw, 1498px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Transfer Function of a Closed Loop System\" width=\"580\" height=\"326\" src=\"https:\/\/www.youtube.com\/embed\/WOeMqgyJK-A?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<div class=\"chapter19-wide\">\n\n  <h1>Feedback Control System<\/h1>\n\n  <div class=\"subtitle\">\n    \uac1c\ub8e8\ud504 \uc2dc\uc2a4\ud15c \u2192 \ud3d0\ub8e8\ud504 \uc2dc\uc2a4\ud15c \u2192 \ub8e8\ud504 \uac1c\ubc29(OLTF) \u2192 \uc804\ub2ec\ud568\uc218 \uad00\uacc4\uc2dd\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>1. Feedback Control System \uc804\uccb4 \ud750\ub984<\/h2>\n\n  <div class=\"card\">\n\n    <div class=\"memory\">\n      <strong>\n        \uc81c\uc5b4 \uc2dc\uc2a4\ud15c\uc740\n        \uac1c\ub8e8\ud504 \uc2dc\uc2a4\ud15c\uc5d0\uc11c \uc2dc\uc791\ud558\uc5ec,\n        \ucd9c\ub825\uc758 \ud53c\ub4dc\ubc31\uc744 \ucd94\uac00\ud55c \ud3d0\ub8e8\ud504 \uc2dc\uc2a4\ud15c\uc73c\ub85c \ud655\uc7a5\ub41c\ub2e4.\n      <\/strong>\n    <\/div>\n\n    <div class=\"flow\">\n      Open Loop System\n      \u2192 Closed Loop System\n      \u2192 Loop Open\n      \u2192 OLTF = GH\n      \u2192 CLTF = G \/ (1 + GH)\n    <\/div>\n\n    <p>\n      \uac00\uc7a5 \ub2e8\uc21c\ud55c \uc81c\uc5b4 \uad6c\uc870\ub294\n      \uc785\ub825\uc774 \ud50c\ub79c\ud2b8\ub97c \uc9c1\uc811 \ud1b5\uacfc\ud558\uc5ec \ucd9c\ub825\uc744 \ub9cc\ub4dc\ub294\n      Open Loop System\uc774\ub2e4.\n    <\/p>\n\n    <p>\n      \uc5ec\uae30\uc5d0 \ucd9c\ub825 \uc2e0\ud638\ub97c \ub2e4\uc2dc \uc785\ub825\uce21\uc73c\ub85c \ub418\ub3cc\ub9ac\ub294\n      Feedback \uacbd\ub85c\ub97c \ucd94\uac00\ud558\uba74\n      Closed Loop System\uc774 \ub41c\ub2e4.\n    <\/p>\n\n    <p>\n      \ud3d0\ub8e8\ud504 \uc2dc\uc2a4\ud15c\uc758 \ud2b9\uc131\uc744 \ubd84\uc11d\ud558\uae30 \uc704\ud574\n      \ud53c\ub4dc\ubc31 \ub8e8\ud504\ub97c \ud55c \uc9c0\uc810\uc5d0\uc11c \uac1c\ubc29\ud558\uba74\n      \ub8e8\ud504\ub97c \ud55c \ubc14\ud034 \ub3c4\ub294 \uc804\ub2ec\ud568\uc218\ub97c \uad6c\ud560 \uc218 \uc788\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      OLTF = G(s)H(s)\n    <\/div>\n\n    <p>\n      Negative Feedback\uc5d0\uc11c\ub294\n      \uc774 Open Loop Transfer Function\uc774\n      Closed Loop Transfer Function\uc758 \ubd84\ubaa8\ub97c \uacb0\uc815\ud55c\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      CLTF =\n      G(s) \/ [1 + G(s)H(s)]\n    <\/div>\n\n    <div class=\"sequence\">\n      \uc785\ub825\uacfc \ucd9c\ub825\uc758 \uc9c1\uc811 \uad00\uacc4\n      \u2192 \ucd9c\ub825 Feedback\n      \u2192 Loop Gain \ud655\uc778\n      \u2192 \ud3d0\ub8e8\ud504 \uc804\ub2ec\ud568\uc218\n      \u2192 \ud2b9\uc131\ubc29\uc815\uc2dd\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>2. \uc6a9\uc5b4 \uc815\uc758<\/h2>\n\n\n  <!-- ================================================= -->\n  <h3>2.1 Open Loop System<\/h3>\n\n  <div class=\"card\">\n\n    <p>\n      Open Loop System\uc740\n      \ucd9c\ub825 \uc2e0\ud638\ub97c \uc785\ub825\uce21\uc73c\ub85c \ub418\ub3cc\ub9ac\ub294\n      Feedback \uacbd\ub85c\uac00 \uc5c6\ub294 \uc81c\uc5b4 \uc2dc\uc2a4\ud15c\uc774\ub2e4.\n    <\/p>\n\n    <div class=\"flow\">\n      R(s)\n      \u2192 G(s)\n      \u2192 C(s)\n    <\/div>\n\n    <div class=\"grid-2\">\n\n      <div class=\"memory\">\n        <strong>\uc785\ub825<\/strong>\n        <br><br>\n        R(s)\n      <\/div>\n\n      <div class=\"memory\">\n        <strong>\ucd9c\ub825<\/strong>\n        <br><br>\n        C(s)\n      <\/div>\n\n    <\/div>\n\n    <p>\n      \uc785\ub825 R(s)\uac00 \ud50c\ub79c\ud2b8 \ub610\ub294 \uc81c\uc5b4 \ub300\uc0c1 G(s)\ub97c \ud1b5\uacfc\ud558\uba74\n      \ucd9c\ub825 C(s)\uac00 \ub9cc\ub4e4\uc5b4\uc9c4\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      C(s) = R(s)G(s)\n    <\/div>\n\n    <div class=\"formula\">\n      C(s) \/ R(s) = G(s)\n    <\/div>\n\n    <div class=\"memory\">\n      <strong>\n        \uac1c\ub8e8\ud504 \uc2dc\uc2a4\ud15c\uc5d0\uc11c\ub294\n        \uc785\ub825\uacfc \uc804\ub2ec\ud568\uc218\uc758 \uacf1\uc73c\ub85c \ucd9c\ub825\uc774 \uacb0\uc815\ub41c\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h3>2.2 Closed Loop System<\/h3>\n\n  <div class=\"card\">\n\n    <p>\n      Closed Loop System\uc740\n      \ucd9c\ub825 C(s)\ub97c \ub2e4\uc2dc \uc785\ub825\uce21\uc73c\ub85c \ub418\ub3cc\ub824\n      \uae30\uc900 \uc785\ub825 R(s)\uc640 \ube44\uad50\ud558\ub294 \uc81c\uc5b4 \uc2dc\uc2a4\ud15c\uc774\ub2e4.\n    <\/p>\n\n    <div class=\"flow\">\n      R(s)\n      \u2192 \ube44\uad50\uae30\n      \u2192 E(s)\n      \u2192 G(s)\n      \u2192 C(s)\n      \u2192 H(s)\n      \u2192 \ube44\uad50\uae30\n    <\/div>\n\n    <p>\n      \ucd9c\ub825\uc740 Feedback \uc694\uc18c H(s)\ub97c \ud1b5\uacfc\ud558\uc5ec\n      \uc785\ub825\uce21\uc758 \ube44\uad50\uae30\ub85c \ub418\ub3cc\uc544\uac04\ub2e4.\n    <\/p>\n\n    <p>\n      Negative Feedback\uc5d0\uc11c\ub294\n      \uae30\uc900 \uc785\ub825\uacfc Feedback \uc2e0\ud638\uc758 \ucc28\uc774\uac00\n      \uc624\ucc28 \uc2e0\ud638 E(s)\uac00 \ub41c\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      E(s) = R(s) &#8211; H(s)C(s)\n    <\/div>\n\n    <p>\n      \uc774 \uc624\ucc28 \uc2e0\ud638\uac00 G(s)\uc5d0 \uc785\ub825\ub41c\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      C(s) = G(s)E(s)\n    <\/div>\n\n    <div class=\"memory\">\n      <strong>\n        Closed Loop System\uc758 \ud575\uc2ec\uc740\n        \ucd9c\ub825 \uacb0\uacfc\ub97c \ub2e4\uc2dc \uc785\ub825\uce21\uc73c\ub85c \ub418\ub3cc\ub824\n        \uc624\ucc28\ub97c \uc218\uc815\ud558\ub294 \uac83\uc774\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h3>2.3 Negative Feedback<\/h3>\n\n  <div class=\"card\">\n\n    <p>\n      Negative Feedback\uc740\n      Feedback \uc2e0\ud638\ub97c \uae30\uc900 \uc785\ub825\uc5d0\uc11c \ube7c\ub294 \uad6c\uc870\uc774\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      E = R &#8211; HC\n    <\/div>\n\n    <p>\n      \ucd9c\ub825\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      C = GE\n    <\/div>\n\n    <p>\n      \ub530\ub77c\uc11c\n    <\/p>\n\n    <div class=\"formula\">\n      C = G(R &#8211; HC)\n    <\/div>\n\n    <p>\n      \uc2dd\uc744 \uc804\uac1c\ud558\uba74\n    <\/p>\n\n    <div class=\"formula\">\n      C = GR &#8211; GHC\n    <\/div>\n\n    <p>\n      \ucd9c\ub825 C\uc5d0 \ub300\ud55c \ud56d\uc744 \ud55c\ucabd\uc73c\ub85c \ubaa8\uc73c\uba74\n    <\/p>\n\n    <div class=\"formula\">\n      C(1 + GH) = GR\n    <\/div>\n\n    <p>\n      \ub530\ub77c\uc11c \ud3d0\ub8e8\ud504 \uc804\ub2ec\ud568\uc218\ub294\n    <\/p>\n\n    <div class=\"formula\">\n      C \/ R = G \/ (1 + GH)\n    <\/div>\n\n    <div class=\"memory\">\n      <strong>\n        Negative Feedback\uc5d0\uc11c\ub294\n        \ud3d0\ub8e8\ud504 \uc804\ub2ec\ud568\uc218\uc758 \ubd84\ubaa8\uac00\n        1 + GH\uac00 \ub41c\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h3>2.4 Open Loop Transfer Function<\/h3>\n\n  <div class=\"card\">\n\n    <p>\n      Open Loop Transfer Function\uc740\n      \ud3d0\ub8e8\ud504 \uc2dc\uc2a4\ud15c\uc758 \ud53c\ub4dc\ubc31 \ub8e8\ud504\ub97c\n      \ud55c \uc9c0\uc810\uc5d0\uc11c \uac1c\ubc29\ud588\uc744 \ub54c,\n      \ub8e8\ud504\ub97c \ud55c \ubc14\ud034 \ub530\ub77c\uac00\uba70 \uc5bb\ub294 \uc804\ub2ec\ud568\uc218\uc774\ub2e4.\n    <\/p>\n\n    <div class=\"flow\">\n      Loop Open\n      \u2192 G(s)\n      \u2192 H(s)\n      \u2192 Loop Return\n    <\/div>\n\n    <p>\n      \uc21c\ubc29\ud5a5 \uc804\ub2ec\ud568\uc218 G(s)\uc640\n      \ud53c\ub4dc\ubc31 \uc804\ub2ec\ud568\uc218 H(s)\uac00 \uc9c1\ub82c\ub85c \uc5f0\uacb0\ub418\ubbc0\ub85c\n      Open Loop Transfer Function\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      OLTF = G(s)H(s)\n    <\/div>\n\n    <div class=\"memory\">\n      <strong>\n        Open Loop System\uacfc\n        Open Loop Transfer Function\uc740 \uac19\uc740 \uac1c\ub150\uc774 \uc544\ub2c8\ub2e4.\n      <\/strong>\n    <\/div>\n\n    <div class=\"grid-2\">\n\n      <div class=\"memory\">\n        <strong>Open Loop System<\/strong>\n        <br><br>\n        \uc6d0\ub798\ubd80\ud130 Feedback \uacbd\ub85c\uac00 \uc5c6\ub294 \uc2dc\uc2a4\ud15c\n      <\/div>\n\n      <div class=\"memory\">\n        <strong>OLTF<\/strong>\n        <br><br>\n        \ud3d0\ub8e8\ud504\uc758 \ub8e8\ud504\ub97c \uac1c\ubc29\ud558\uc5ec \uad6c\ud55c Loop \uc804\ub2ec\ud568\uc218\n      <\/div>\n\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h3>2.5 Closed Loop Transfer Function<\/h3>\n\n  <div class=\"card\">\n\n    <p>\n      Closed Loop Transfer Function\uc740\n      \ud3d0\ub8e8\ud504 \uc0c1\ud0dc\uc5d0\uc11c\n      \uae30\uc900 \uc785\ub825 R(s)\uc640 \ucd9c\ub825 C(s)\uc758 \uad00\uacc4\ub97c \ub098\ud0c0\ub0b8\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      CLTF = C(s) \/ R(s)\n    <\/div>\n\n    <p>\n      Negative Feedback\uc5d0\uc11c\ub294\n    <\/p>\n\n    <div class=\"formula\">\n      CLTF =\n      G(s) \/ [1 + G(s)H(s)]\n    <\/div>\n\n    <p>\n      OLTF\ub97c \uc0ac\uc6a9\ud558\uba74\n    <\/p>\n\n    <div class=\"formula\">\n      OLTF = G(s)H(s)\n    <\/div>\n\n    <div class=\"formula\">\n      CLTF =\n      G(s) \/ [1 + OLTF]\n    <\/div>\n\n    <div class=\"memory\">\n      <strong>\n        OLTF\ub294 \ub8e8\ud504 \uc790\uccb4\uc758 \ud2b9\uc131\uc744 \ub098\ud0c0\ub0b4\uace0,\n        CLTF\ub294 \uc2e4\uc81c \uc785\ub825\uacfc \ucd9c\ub825\uc758 \uad00\uacc4\ub97c \ub098\ud0c0\ub0b8\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h3>2.6 Characteristic Equation<\/h3>\n\n  <div class=\"card\">\n\n    <p>\n      Negative Feedback \ud3d0\ub8e8\ud504 \uc804\ub2ec\ud568\uc218\uc758 \ubd84\ubaa8\ub294\n      \ub2e4\uc74c\uacfc \uac19\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      1 + G(s)H(s)\n    <\/div>\n\n    <p>\n      \ud3d0\ub8e8\ud504 \uc2dc\uc2a4\ud15c\uc758 \ud2b9\uc131\ubc29\uc815\uc2dd\uc740\n      \uc774 \ubd84\ubaa8\ub97c 0\uc73c\ub85c \ub450\uc5b4 \uc5bb\ub294\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      1 + G(s)H(s) = 0\n    <\/div>\n\n    <p>\n      OLTF\ub97c \uc0ac\uc6a9\ud558\uba74\n    <\/p>\n\n    <div class=\"formula\">\n      1 + OLTF = 0\n    <\/div>\n\n    <div class=\"memory\">\n      <strong>\n        \ud3d0\ub8e8\ud504 \uc548\uc815\ub3c4\ub294\n        1 + GH = 0\uc758 \uadfc,\n        \uc989 \ud3d0\ub8e8\ud504 \uadf9\uc810\uacfc \uc9c1\uc811 \uc5f0\uacb0\ub41c\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>3. \uc6a9\uc5b4 \uac04 \uad00\uacc4<\/h2>\n\n  <div class=\"table-wrap\">\n\n    <table>\n\n      <thead>\n        <tr>\n          <th>\uad6c\ubd84<\/th>\n          <th>\uc758\ubbf8<\/th>\n          <th>\ud575\uc2ec \uad00\uacc4\uc2dd<\/th>\n        <\/tr>\n      <\/thead>\n\n      <tbody>\n\n        <tr>\n          <td><strong>Open Loop System<\/strong><\/td>\n          <td>Feedback\uc774 \uc5c6\ub294 \uc2dc\uc2a4\ud15c<\/td>\n          <td>C\/R = G<\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>Closed Loop System<\/strong><\/td>\n          <td>\ucd9c\ub825\uc744 \ub2e4\uc2dc \uc785\ub825\uce21\uc73c\ub85c Feedback<\/td>\n          <td>E = R &#8211; HC<\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>Negative Feedback<\/strong><\/td>\n          <td>Feedback \uc2e0\ud638\ub97c \uae30\uc900 \uc785\ub825\uc5d0\uc11c \ucc28\uac10<\/td>\n          <td>E = R &#8211; HC<\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>OLTF<\/strong><\/td>\n          <td>\ub8e8\ud504\ub97c \uac1c\ubc29\ud588\uc744 \ub54c \ud55c \ubc14\ud034 \uc804\ub2ec\ud568\uc218<\/td>\n          <td>GH<\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>CLTF<\/strong><\/td>\n          <td>\ud3d0\ub8e8\ud504\uc758 \uc785\ub825-\ucd9c\ub825 \uc804\ub2ec\ud568\uc218<\/td>\n          <td>G \/ (1 + GH)<\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>Characteristic Equation<\/strong><\/td>\n          <td>\ud3d0\ub8e8\ud504 \uadf9\uc810\uc744 \uacb0\uc815\ud558\ub294 \uc2dd<\/td>\n          <td>1 + GH = 0<\/td>\n        <\/tr>\n\n      <\/tbody>\n\n    <\/table>\n\n  <\/div>\n\n\n  <h3>Feedback Control System\uc758 \ubc1c\uc804 \uacfc\uc815<\/h3>\n\n  <div class=\"flow\">\n    Open Loop\n    \u2192 Feedback \ucd94\uac00\n    \u2192 Closed Loop\n    \u2192 Loop Open\n    \u2192 OLTF = GH\n    \u2192 CLTF = G \/ (1 + GH)\n    \u2192 1 + GH = 0\n  <\/div>\n\n\n  <h3>\uac00\uc7a5 \uc911\uc694\ud55c \uad00\uacc4<\/h3>\n\n  <div class=\"formula\">\n    OLTF = GH\n  <\/div>\n\n  <div class=\"formula\">\n    CLTF = G \/ (1 + GH)\n  <\/div>\n\n  <div class=\"formula\">\n    Characteristic Equation:\n    1 + GH = 0\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>4. \ud558\ub098\uc758 \uc2a4\ud1a0\ub9ac\ub85c \uc774\ud574\ud558\uae30<\/h2>\n\n\n  <div class=\"story\">\n\n    <h3>Step 1. \uac00\uc7a5 \ub2e8\uc21c\ud558\uac8c \uc785\ub825\uc744 \ud50c\ub79c\ud2b8\uc5d0 \ub123\ub294\ub2e4<\/h3>\n\n    <p>\n      \uba3c\uc800 Feedback\uc744 \uace0\ub824\ud558\uc9c0 \uc54a\ub294\ub2e4.\n    <\/p>\n\n    <div class=\"flow\">\n      R\n      \u2192 G\n      \u2192 C\n    <\/div>\n\n    <div class=\"formula\">\n      C = RG\n    <\/div>\n\n    <div class=\"formula\">\n      C \/ R = G\n    <\/div>\n\n    <p>\n      \uc774\uac83\uc774 Open Loop System\uc774\ub2e4.\n    <\/p>\n\n  <\/div>\n\n\n  <div class=\"story\">\n\n    <h3>Step 2. \uc2e4\uc81c \ucd9c\ub825\uc774 \uc6d0\ud558\ub294 \uac12\uacfc \ub2e4\ub978 \ubb38\uc81c\uac00 \ubc1c\uc0dd\ud55c\ub2e4<\/h3>\n\n    <p>\n      \ucd9c\ub825 C\ub97c \ub2e4\uc2dc \uce21\uc815\ud558\uc5ec\n      \uae30\uc900 \uc785\ub825 R\uacfc \ube44\uad50\ud55c\ub2e4.\n    <\/p>\n\n    <div class=\"flow\">\n      Output\n      \u2192 Feedback\n      \u2192 Input\uacfc \ube44\uad50\n    <\/div>\n\n    <p>\n      \ucd9c\ub825 Feedback\uc774 \ucd94\uac00\ub418\uba74\uc11c\n      Closed Loop System\uc774 \ub41c\ub2e4.\n    <\/p>\n\n  <\/div>\n\n\n  <div class=\"story\">\n\n    <h3>Step 3. \ucd9c\ub825\uacfc \uae30\uc900\uac12\uc758 \ucc28\uc774\ub97c \ub9cc\ub4e0\ub2e4<\/h3>\n\n    <p>\n      Negative Feedback\uc5d0\uc11c\ub294\n      Feedback \uc2e0\ud638 HC\ub97c \uae30\uc900 \uc785\ub825\uc5d0\uc11c \ube80\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      E = R &#8211; HC\n    <\/div>\n\n    <p>\n      \uc774 E\uac00 \uc81c\uc5b4 \uc2dc\uc2a4\ud15c\uc744 \uc6c0\uc9c1\uc774\ub294\n      \uc624\ucc28 \uc2e0\ud638\uac00 \ub41c\ub2e4.\n    <\/p>\n\n  <\/div>\n\n\n  <div class=\"story\">\n\n    <h3>Step 4. \ub8e8\ud504 \uc790\uccb4\uc758 \ud2b9\uc131\uc744 \ubcf4\uace0 \uc2f6\ub2e4<\/h3>\n\n    <p>\n      \ud3d0\ub8e8\ud504\ub97c \ud55c \uc9c0\uc810\uc5d0\uc11c \uac1c\ubc29\ud558\uace0\n      \ub8e8\ud504\ub97c \ud55c \ubc14\ud034 \ub530\ub77c\uac00 \ubcf8\ub2e4.\n    <\/p>\n\n    <div class=\"flow\">\n      Loop Open\n      \u2192 G\n      \u2192 H\n      \u2192 Return\n    <\/div>\n\n    <div class=\"formula\">\n      OLTF = GH\n    <\/div>\n\n    <p>\n      \uc774\uac83\uc774 Open Loop Transfer Function\uc774\ub2e4.\n    <\/p>\n\n  <\/div>\n\n\n  <div class=\"story\">\n\n    <h3>Step 5. \ub2e4\uc2dc \ud3d0\ub8e8\ud504 \uc804\ub2ec\ud568\uc218\ub97c \uad6c\ud55c\ub2e4<\/h3>\n\n    <div class=\"formula\">\n      E = R &#8211; HC\n    <\/div>\n\n    <div class=\"formula\">\n      C = GE\n    <\/div>\n\n    <p>\n      \ub450 \uc2dd\uc744 \uc5f0\uacb0\ud558\uba74\n    <\/p>\n\n    <div class=\"formula\">\n      C = G(R &#8211; HC)\n    <\/div>\n\n    <p>\n      \uc815\ub9ac\ud558\uba74\n    <\/p>\n\n    <div class=\"formula\">\n      C(1 + GH) = GR\n    <\/div>\n\n    <p>\n      \ub530\ub77c\uc11c\n    <\/p>\n\n    <div class=\"formula\">\n      C \/ R = G \/ (1 + GH)\n    <\/div>\n\n  <\/div>\n\n\n  <div class=\"story\">\n\n    <h3>Step 6. \ud3d0\ub8e8\ud504\uc758 \uadf9\uc810\uc740 \uc5b4\ub514\uc5d0\uc11c \uacb0\uc815\ub418\ub294\uac00?<\/h3>\n\n    <p>\n      \ud3d0\ub8e8\ud504 \uc804\ub2ec\ud568\uc218\uc758 \ubd84\ubaa8\ub97c \ud655\uc778\ud55c\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      1 + GH\n    <\/div>\n\n    <p>\n      \uc774 \ubd84\ubaa8\uac00 0\uc774 \ub418\ub294 \uc9c0\uc810\uc774\n      \ud3d0\ub8e8\ud504 \uc2dc\uc2a4\ud15c\uc758 \uadf9\uc810\uc774 \ub41c\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      1 + GH = 0\n    <\/div>\n\n    <div class=\"memory\">\n      <strong>\n        \ub530\ub77c\uc11c OLTF = GH\ub97c \uc54c\uba74\n        \ud3d0\ub8e8\ud504 \uc804\ub2ec\ud568\uc218\uc640 \ud2b9\uc131\ubc29\uc815\uc2dd\uc744 \uc5f0\uacb0\ud560 \uc218 \uc788\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>5. \ud575\uc2ec \uae30\uc5b5 \ubb38\uc7a5<\/h2>\n\n  <div class=\"memory\">\n\n    <ol>\n\n      <li>\n        <strong>\n          Open Loop System\uc740 \ucd9c\ub825 Feedback\uc774 \uc5c6\uc73c\uba70\n          C\/R = G\uc774\ub2e4.\n        <\/strong>\n      <\/li>\n\n      <li>\n        <strong>\n          Closed Loop System\uc740 \ucd9c\ub825\uc744 \ub2e4\uc2dc \uc785\ub825\uce21\uc73c\ub85c Feedback\ud55c\ub2e4.\n        <\/strong>\n      <\/li>\n\n      <li>\n        <strong>\n          Negative Feedback\uc758 \uc624\ucc28\ub294\n          E = R &#8211; HC\uc774\ub2e4.\n        <\/strong>\n      <\/li>\n\n      <li>\n        <strong>\n          OLTF\ub294 \ud3d0\ub8e8\ud504\ub97c \uac1c\ubc29\ud588\uc744 \ub54c\n          \ub8e8\ud504\ub97c \ud55c \ubc14\ud034 \ub3c4\ub294 \uc804\ub2ec\ud568\uc218\uc774\uba70 GH\uc774\ub2e4.\n        <\/strong>\n      <\/li>\n\n      <li>\n        <strong>\n          Negative Feedback\uc758 CLTF\ub294\n          G \/ (1 + GH)\uc774\ub2e4.\n        <\/strong>\n      <\/li>\n\n      <li>\n        <strong>\n          \ud3d0\ub8e8\ud504 \ud2b9\uc131\ubc29\uc815\uc2dd\uc740\n          1 + GH = 0\uc774\ub2e4.\n        <\/strong>\n      <\/li>\n\n      <li>\n        <strong>\n          Open Loop System\uacfc OLTF\ub294 \uc11c\ub85c \ub2e4\ub978 \uac1c\ub150\uc774\ub2e4.\n        <\/strong>\n      <\/li>\n\n    <\/ol>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>6. \ucd5c\uc885 \uc554\uae30 \uad6c\uc870<\/h2>\n\n  <div class=\"flow\">\n    Open Loop System\n    <br>\u2193<br>\n    C \/ R = G\n    <br>\u2193<br>\n    Feedback \ucd94\uac00\n    <br>\u2193<br>\n    Closed Loop System\n    <br>\u2193<br>\n    E = R &#8211; HC\n    <br>\u2193<br>\n    Loop Open\n    <br>\u2193<br>\n    OLTF = GH\n    <br>\u2193<br>\n    CLTF = G \/ (1 + GH)\n    <br>\u2193<br>\n    Characteristic Equation\n    <br>\n    1 + GH = 0\n  <\/div>\n\n\n  <div class=\"memory\">\n\n    <strong>\ud55c \ubb38\uc7a5 \uc815\ub9ac<\/strong>\n\n    <br><br>\n\n    Feedback Control System\uc740\n    Feedback\uc774 \uc5c6\ub294 Open Loop System\uc5d0\uc11c \uc2dc\uc791\ud558\uc5ec,\n    \ucd9c\ub825\uc744 \uc785\ub825\uce21\uc73c\ub85c \ub418\ub3cc\ub9ac\ub294 Closed Loop System\uc73c\ub85c \ud655\uc7a5\ub418\uace0,\n    \ud3d0\ub8e8\ud504\ub97c \uac1c\ubc29\ud588\uc744 \ub54c \uc5bb\ub294 OLTF = GH\ub97c \uc774\uc6a9\ud558\uc5ec\n    Negative Feedback\uc758 \ud3d0\ub8e8\ud504 \uc804\ub2ec\ud568\uc218\n    CLTF = G \/ (1 + GH)\uc640\n    \ud2b9\uc131\ubc29\uc815\uc2dd 1 + GH = 0\uc744 \uc5f0\uacb0\ud558\uc5ec \uc774\ud574\ud560 \uc218 \uc788\ub2e4.\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <div class=\"keywords\">\n    Open Loop System, Closed Loop System, Negative Feedback,\n    OLTF, CLTF, G(s), H(s), GH, Characteristic Equation\n  <\/div>\n\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>feedback system\uc5d0\uc11c open loop, closed loop\uac00 \ud5f7\uac08\ub9bc. \ub3d9\uc601\uc0c1 \ub9c8\uc9c0\ub9c9\uc5d0 closed loop transfer fucntion\uc740 Routh-Hurwitz Criteria \ub9d0\uace0 \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uc74c. Feedback Control System \uac1c\ub8e8\ud504 \uc2dc\uc2a4\ud15c \u2192 \ud3d0\ub8e8\ud504 \uc2dc\uc2a4\ud15c \u2192 \ub8e8\ud504 \uac1c\ubc29(OLTF) \u2192 \uc804\ub2ec\ud568\uc218 \uad00\uacc4\uc2dd 1. Feedback Control System \uc804\uccb4 \ud750\ub984 \uc81c\uc5b4 \uc2dc\uc2a4\ud15c\uc740 \uac1c\ub8e8\ud504 \uc2dc\uc2a4\ud15c\uc5d0\uc11c \uc2dc\uc791\ud558\uc5ec, \ucd9c\ub825\uc758 \ud53c\ub4dc\ubc31\uc744 \ucd94\uac00\ud55c \ud3d0\ub8e8\ud504 \uc2dc\uc2a4\ud15c\uc73c\ub85c \ud655\uc7a5\ub41c\ub2e4. Open Loop System \u2192 Closed Loop [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[1185],"tags":[1202,1201],"class_list":["post-6047","post","type-post","status-publish","format-standard","hentry","category-1185","tag-cltf","tag-oltf"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts\/6047","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/comments?post=6047"}],"version-history":[{"count":3,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts\/6047\/revisions"}],"predecessor-version":[{"id":9536,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts\/6047\/revisions\/9536"}],"wp:attachment":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/media?parent=6047"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/categories?post=6047"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/tags?post=6047"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}