{"id":9260,"date":"2026-07-22T18:48:50","date_gmt":"2026-07-22T09:48:50","guid":{"rendered":"https:\/\/now0930.pe.kr\/wordpress\/?p=9260"},"modified":"2026-08-06T20:13:43","modified_gmt":"2026-08-06T11:13:43","slug":"%eb%b0%b8%eb%b8%8c%ec%97%90-%ec%9e%91%ec%9a%a9%ed%95%98%eb%8a%94-%ed%9e%98","status":"publish","type":"post","link":"https:\/\/now0930.pe.kr\/wordpress\/%eb%b0%b8%eb%b8%8c%ec%97%90-%ec%9e%91%ec%9a%a9%ed%95%98%eb%8a%94-%ed%9e%98\/","title":{"rendered":"\ubc38\ube0c\uc5d0 \uc791\uc6a9\ud558\ub294 \ud798"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\uacf5\uc555\uc2dd \uad6c\ub3d9\uae30 \uc120\uc815 \uc2dc \uace0\ub824\ud574\uc57c \ud560 \ubc38\ube0c\uc758 \ubd88\ud3c9\ud615\ub825\uacfc \ub9c8\ucc30\ub825\uc758 \uac1c\ub150\uc744 \uc124\uba85\ud558\uace0, Fail-Safe \ub3d9\uc791 \uad6c\ud604\uc744 \uc704\ud55c \uc2a4\ud504\ub9c1 \uc124\uacc4 \uae30\uc900\uc744 \uc124\uba85\ud558\uc2dc\uc624<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[\ub2f5\uc548] \ubc38\ube0c\uc758 \ubd88\ud3c9\ud615\ub825, \ub9c8\ucc30\ub825 \ubc0f Fail-Safe \uc2a4\ud504\ub9c1 \uc124\uacc4 \uae30\uc900<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>\uac1c\uc694<\/li>\n<\/ol>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>\uc81c\uc5b4 \ubc38\ube0c\uc758 \uc5ed\ud559\uc801 \ud2b9\uc131: \ubc38\ube0c\ub294 \uc561\ucd94\uc5d0\uc774\ud130 \ud798(Fa), \uc2a4\ud504\ub9c1 \ud798(Fs), \uc720\uccb4 \ucc28\uc555\uc5d0 \uc758\ud55c \ubd88\ud3c9\ud615\ub825(Fu), \ud328\ud0b9\/\uc2dc\ud2b8 \ub9c8\ucc30\ub825(Ff), \uc2dc\ud2b8 \uae30\ubc00 \uc720\uc9c0\ub825(FL)\uc758 \ud798\uc758 \ud3c9\ud615\uc5d0 \uc758\ud574 \ub3d9\uc791\ud568.<\/li>\n\n\n\n<li>Fail-Safe \uac1c\ub150: \uacf5\uc555 \ub610\ub294 \uc804\uc6d0 \uc0c1\uc2e4 \uc2dc, \uc561\ucd94\uc5d0\uc774\ud130 \ub0b4\ubd80 \uc2a4\ud504\ub9c1\uc758 \ud798\ub9cc\uc73c\ub85c \ubc38\ube0c\ub97c \uc9c0\uc815\ub41c \uc548\uc804 \uc704\uce58(FC: \ub2eb\ud798, FO: \uc5f4\ub9bc)\ub85c \uc774\ub3d9\uc2dc\ud0a4\ub294 \ud544\uc218 \uae30\ub2a5\uc784.<\/li>\n\n\n\n<li>\uc124\uacc4 \ud575\uc2ec: \uc815\ubc00\ud55c \uc2a4\ud504\ub9c1 \uc124\uacc4\ub97c \uc704\ud574 \ucc28\uc555, \uc720\ub3d9 \ubc29\ud5a5(FTO\/FTC), \uc2dc\ud2b8 \ub204\uc124 \ub4f1\uae09\ubcc4 \ubc00\ud3d0\ub825, Bench Set\uc744 \ud3ec\ud568\ud55c \ucd5c\uc545 \uc870\uac74(Worst-case)\uc744 \ud1b5\ud569 \uace0\ub824\ud574\uc57c \ud568.<\/li>\n\n\n\n<li>\ubc38\ube0c\uc5d0 \uc791\uc6a9\ud558\ub294 \ud798\uc758 \uc815\ubc00 \ud574\uc11d<\/li>\n<\/ol>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>\uc720\uccb4 \ubd88\ud3c9\ud615\ub825 (Fu, Unbalanced Force)\n<ul class=\"wp-block-list\">\n<li>\uac1c\ub150: \uc720\uc785\/\uc720\ucd9c \uac04 \ucc28\uc555(dP = P1 &#8211; P2)\uc774 \ud50c\ub7ec\uadf8 \uba74\uc801\uc5d0 \uc791\uc6a9\ud558\uc5ec \ubc1c\uc0dd\ud558\ub294 \ud798.<\/li>\n\n\n\n<li>\uc218\uc2dd: Fu = dP * Ae<\/li>\n\n\n\n<li>\uc720\ud6a8 \uba74\uc801(Ae) \ud574\uc11d:\n<ul class=\"wp-block-list\">\n<li>Unbalanced Trim: \ud50c\ub7ec\uadf8 \uc804\uccb4 \ub2e8\uba74\uc801(Ap) \uc801\uc6a9.<\/li>\n\n\n\n<li>Balanced Trim: \uc555\ub825 \uc0c1\uc1c4 \uad6c\uba4d\uc5d0 \uc758\ud574 \uc0c1\ud558 \uc555\ub825\uc774 \uc0c1\uc1c4\ub418\ubbc0\ub85c, \uc2a4\ud15c \ub2e8\uba74\uc801(As)\ub9cc \uc791\uc6a9\ud568 (Ae = As &lt;&lt; Ap).<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\uc720\ub3d9 \ubc29\ud5a5\uacfc \ubd88\ud3c9\ud615\ub825\uc758 \uad00\uacc4<ul><li>Flow-to-Open (FTOP): \uc720\uccb4\uac00 \uc2dc\ud2b8 \ud558\ubd80\uc5d0\uc11c \uc720\uc785. \ucc28\uc555\uc774 \ubc38\ube0c\ub97c \uc5f4\ub824\ub294 \ubc29\ud5a5\uc73c\ub85c \uc791\uc6a9.<\/li><li>Flow-to-Close (FTCL): \uc720\uccb4\uac00 \uc2dc\ud2b8 \uc0c1\ubd80\uc5d0\uc11c \uc720\uc785. \ucc28\uc555\uc774 \ubc38\ube0c\ub97c \ub2eb\uc73c\ub824\ub294 \ubc29\ud5a5\uc73c\ub85c \uc791\uc6a9\ud558\uba70, \uc800\uac1c\ub3c4 \uc2dc \ucf85 \ub2eb\ud788\ub294 \uc2ac\ub798\ubc0d(Slamming) \ud604\uc0c1 \uc704\ud5d8\uc774 \uc788\uc74c.<\/li><\/ul>&lt; FTOP \uad6c\uc870 &gt; &lt; FTCL \uad6c\uc870 &gt;Fa Fa| |v Stem v Stem+&#8212;-+&#8212;-+ +&#8212;-+&#8212;-+| Plug | | Plug |+&#8212;&#8212;&#8212;+ +&#8212;&#8212;&#8212;+^ ^ | |P1 =&gt;| (Upward) |=&gt; P2 P1 =&gt;| (Downward)|=&gt; P2+&#8212;Seat&#8212;+ +&#8212;Seat&#8212;+<\/li>\n\n\n\n<li>\ub9c8\ucc30\ub825 (Ff, Friction Force)\n<ul class=\"wp-block-list\">\n<li>\uc218\uc2dd: Ff = F_static + (c * v) + F_Stribeck<\/li>\n\n\n\n<li>\ud2b9\uc131: \uc77c\ubc18\uc801\uc778 \uad6c\ub3d9 \uc18d\ub3c4(v = 0 \uadfc\uc0ac)\uc5d0\uc11c\ub294 \uc810\uc131\/\uc2a4\ud2b8\ub9ac\ubca1 \ud56d\ubaa9\uc744 \ubb34\uc2dc\ud558\uace0, \ud328\ud0b9 \uccb4\uacb0\ub825\uc5d0 \uc758\ud55c \uac74\uc2dd \ub9c8\ucc30\ub825(F_static)\uc744 \uc0c1\uc218(Constant)\ub85c \ucde8\uae09\ud568.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Fail-Safe \ubaa8\ub4dc\ubcc4 \uc2a4\ud504\ub9c1 \uc815\ub7c9\uc801 \uc124\uacc4 \uae30\uc900<\/li>\n<\/ol>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>Fail Closed (FC) \uc124\uacc4 \uae30\uc900 (FTOP \uc870\uac74 \uae30\uc900)\n<ul class=\"wp-block-list\">\n<li>\uacf5\uc555 \uc0c1\uc2e4 \uc2dc \uc2a4\ud504\ub9c1 \ud798\ub9cc\uc73c\ub85c \ucc28\uc555\uacfc \ub9c8\ucc30\ub825\uc744 \uadf9\ubcf5\ud558\uace0 \uc2dc\ud2b8\ub97c \uc644\uc804 \ucc28\ub2e8\ud574\uc57c \ud568.<\/li>\n\n\n\n<li>\uc870\uac74\uc2dd: Fs_min &gt; Fu + Ff + FL<\/li>\n\n\n\n<li>\uc0c1\uc138\uc2dd: k * x_pre &gt; (dP_max * Ae) + Ff + (qL * pi * D_seat)\n<ul class=\"wp-block-list\">\n<li>k: \uc2a4\ud504\ub9c1 \uc0c1\uc218<\/li>\n\n\n\n<li>x_pre: Bench Set \uc124\uc815\uc5d0 \ub530\ub978 \uc2a4\ud504\ub9c1 \uc608\uc555 \ubcc0\uc774\ub7c9<\/li>\n\n\n\n<li>FL: \uc2dc\ud2b8 \ubc00\ud3d0\ub825 (qL: \uc2dc\ud2b8 \ub4f1\uae09\ubcc4 \ub2e8\uc704 \uae38\uc774\ub2f9 \uc555\ucc29\ub825, D_seat: \uc2dc\ud2b8 \uc9c0\ub984)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Fail Open (FO) \uc124\uacc4 \uae30\uc900 (FTOP \uc870\uac74 \uae30\uc900)\n<ul class=\"wp-block-list\">\n<li>\uacf5\uc555 \uc0c1\uc2e4 \uc2dc \uc2a4\ud504\ub9c1 \ud798\uc774 \ucc28\uc555 \ubc0f \ub9c8\ucc30\ub825\uc744 \uc774\uaca8\ub0b4\uace0 \ubc38\ube0c\ub97c \uc644\uc804 \uc5f4\ub9bc \uc704\uce58\ub85c \ubc00\uc5b4\uc62c\ub824\uc57c \ud568.<\/li>\n\n\n\n<li>\uc870\uac74\uc2dd: Fs_min &gt; Ff &#8211; Fu\n<ul class=\"wp-block-list\">\n<li>\ub2e8, FTCL \uc870\uac74\uc778 \uacbd\uc6b0 Fu \ubc29\ud5a5\uc774 \ubc18\ub300\uac00 \ub418\ubbc0\ub85c Fs_min &gt; Fu + Ff \ub85c \uc801\uc6a9\ud568.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Bench Set \ubc0f \uc548\uc804\uc728 \uace0\ub824\n<ul class=\"wp-block-list\">\n<li>Bench Set: \ucc28\uc555\uc774 \uc5c6\ub294 \uc0c1\ud0dc\uc5d0\uc11c \uc561\ucd94\uc5d0\uc774\ud130\uac00 \uc804\uccb4 \uc2a4\ud2b8\ub85c\ud06c\ub97c \uc774\ub3d9\ud558\ub294 \ub370 \ud544\uc694\ud55c \uacf5\uc555 \ubc94\uc704.<\/li>\n\n\n\n<li>Worst-case \uc124\uacc4: \ucd5c\ub300 \ucc28\uc555, \ud328\ud0b9 \ub178\ud6c4\ud654\ub85c \uc778\ud55c \ub9c8\ucc30\ub825 \uc99d\uac00\ub97c \uace0\ub824\ud558\uc5ec \ucd5c\uc18c 1.15~1.25\ubc30\uc758 \uc548\uc804\uc728\uc744 \uc801\uc6a9\ud568.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\ud604\uc7a5 \uc5d4\uc9c0\ub2c8\uc5b4\ub9c1 \ubc0f \uc720\uc9c0\ubcf4\uc218 \uc720\uc758\uc810<\/li>\n<\/ol>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>Deadband \ubc0f Hysteresis \ucd5c\uc18c\ud654\n<ul class=\"wp-block-list\">\n<li>\ud328\ud0b9 \ub9c8\ucc30\ub825(Ff)\uc774 \uc9c0\ub098\uce58\uac8c \ud06c\uba74 \ubc38\ube0c \uc751\ub2f5\uc5d0 \ubd88\uac10\ub300(Deadband)\uac00 \ubc1c\uc0dd\ud568.<\/li>\n\n\n\n<li>\uc2a4\ub9c8\ud2b8 \ud3ec\uc9c0\uc154\ub108\ub97c \ud65c\uc6a9\ud558\uc5ec \uc785\ub825 \uc2e0\ud638 \ub300\ube44 \uc774\ub3d9 \uac70\ub9ac \uc624\ucc28\ub97c \uc8fc\uae30\uc801\uc73c\ub85c \uac80\uc99d\ud574\uc57c \ud568.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\uc0c1\ud0dc \uae30\ubc18 \ubcf4\uc804 (CBM) \uc801\uc6a9\n<ul class=\"wp-block-list\">\n<li>\uc628\ub77c\uc778 \uc9c4\ub2e8: \ud3ec\uc9c0\uc154\ub108\uc758 \uacf5\uc555 \uc18c\ubaa8\ub7c9 \ubc0f \uc774\ub3d9 \ud504\ub85c\ud30c\uc77c\uc744 \ubd84\uc11d\ud558\uc5ec \ud328\ud0b9 \ub9c8\ucc30 \uc624\ubc84\uc288\ud2b8 \ubc0f \uc2a4\ud504\ub9c1 \ud0c4\uc131 \uc800\ud558\ub97c \uc9c4\ub2e8\ud568.<\/li>\n\n\n\n<li>\ud328\ud0b9 \uc870\uc784 \uad00\ub9ac: \ub204\uc124 \ubc29\uc9c0\ub97c \uc704\ud574 \ud328\ud0b9\uc744 \uacfc\ub3c4\ud558\uac8c \uc870\uc774\uba74 \ub9c8\ucc30\ub825\uc774 \uae09\uc99d\ud558\uc5ec Fail-Safe \ub3d9\uc791 \ubd88\ub2a5(Stuck)\uc774 \ubc1c\uc0dd\ud558\ubbc0\ub85c \uaddc\uc815 \ud1a0\ud06c\ub97c \uc900\uc218\ud574\uc57c \ud568.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\uacb0\ub860<\/li>\n<\/ol>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>\uc815\ud655\ud55c \uc124\uacc4: Fail-Safe \uc2a4\ud504\ub9c1 \uc124\uacc4\ub294 \ub2e8\uc21c \uc720\uc555 \uc678\uc5d0\ub3c4 \uc720\ub3d9 \ubc29\ud5a5, \ud2b8\ub9bc \uad6c\uc870, \uc2dc\ud2b8 \ub204\uc124 \ub4f1\uae09\uc5d0 \ub530\ub978 \ubc00\ud3d0\ub825(FL)\uc744 \uc885\ud569 \ubc18\uc601\ud574\uc57c \ud568.<\/li>\n\n\n\n<li>CBM \uc5f0\uacc4: \uc124\uacc4 \ub9c8\uc9c4 \ud655\ubcf4\uc640 \ud568\uaed8 \uc2a4\ub9c8\ud2b8 \ud3ec\uc9c0\uc154\ub108\ub97c \ud1b5\ud55c \uc9c0\uc18d\uc801\uc778 \ub9c8\ucc30\ub825\/\uc2a4\ud504\ub9c1 \uac74\uc804\uc131 \uac10\uc2dc(CBM)\ub97c \uacb0\ud569\ud558\uc5ec \ud50c\ub79c\ud2b8\uc758 \ubcf8\uc9c8 \uc548\uc804\uc744 \ub2ec\uc131\ud574\uc57c \ud568. \ub05d.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\">\ucc44\uc810 \uc644\ub8cc: 19.1\/25.0<br>\uc608\uc0c1 \uc810\uc218\ub300: 18.6~19.6<br>\uc2e0\ub8b0\ub3c4: high<br>\uacf5\uc2dd \ud569\uaca9\uc120: 15.0\uc810 (\ub2ec\uc131)<br>\uc2e4\uc804 \ubaa9\ud45c\uc120: 17.5\uc810 (\ub2ec\uc131)<br>\uace0\ub4dd\uc810 \uae30\uc900: 20.0\uc810 (\ubbf8\ub2ec)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud310\uc815: \uc6d0\ub9ac \ud574\uc11d \ubc0f \ud604\uc7a5 \uc801\uc6a9\uc131 \uc6b0\uc218\ud558\ub098, \uc804\uac1c \uad6c\uc870 \ubcf4\uc644 \ud544\uc694<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ucd1d\ud3c9: \uc81c\uc5b4\ubc38\ube0c\uc758 \uc5ed\ud559\uc801 \ud2b9\uc131\uacfc Fail-Safe \uc124\uacc4 \uae30\uc900\uc744 \uccb4\uacc4\uc801\uc73c\ub85c \uc815\ub9ac\ud55c \uc6b0\uc218\ud55c \ub2f5\uc548\uc785\ub2c8\ub2e4. \ud2b9\ud788 \uc815\ub7c9\uc801 \uc811\uadfc\uacfc CBM \uc5f0\uacc4\uac00 \ub3cb\ubcf4\uc774\ub098, \uac01 \ub2e8\uacc4\ubcc4 \uc804\uac1c \uad6c\uc870\ub97c \uac15\ud654\ud560 \ud544\uc694\uac00 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[\ud575\uc2ec \ud310\uc815 \uadfc\uac70]<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Fail-Safe \uc124\uacc4 \uc2dc \ucd5c\uc545 \uc870\uac74(Worst-case)\uc744 \uace0\ub824\ud55c \uc815\ub7c9\uc801 \uc811\uadfc\uc774 \uc6b0\uc218\ud568.<\/li>\n\n\n\n<li>\ud798\uc758 \ud3c9\ud615 \uad00\uacc4 \ubc0f \uc720\ub3d9 \ubc29\ud5a5\uc5d0 \ub530\ub978 \ubd88\ud3c9\ud615\ub825 \ucc28\uc774\ub97c \uba85\ud655\ud788 \uc124\uba85\ud568.<\/li>\n\n\n\n<li>CBM\uc744 \ud1b5\ud55c \uc720\uc9c0\ubcf4\uc218 \uc804\ub7b5 \uc81c\uc2dc \ub4f1 \uae30\uc220\uc0ac\uc801 \ud604\uc7a5 \uc801\uc6a9\uc131\uc774 \ub192\uc74c.<\/li>\n\n\n\n<li>\uc804\ubc18\uc801\uc778 \ub17c\ub9ac\uc801 \ud750\ub984\uc740 \uc88b\uc73c\ub098, A\/B\/C\/D\/E \uac01 \ub2e8\uacc4\uc758 \uc804\uac1c \uae4a\uc774\uac00 \ubd80\uc871\ud568.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">[\ud56d\ubaa9\ubcc4 \ud575\uc2ec \uadfc\uac70]<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \ubb38\uc81c \uc9c4\uc785\u00b7\ub2f5\uc548 \uad6c\uc870: \uac1c\uc694 \uc81c\uc2dc \ubc0f \ubaa9\ucc28 \uad6c\uc131\uc774 \ub17c\ub9ac\uc801\uc774\uace0 \uac00\ub3c5\uc131\uc774 \ub192\uc74c.<\/li>\n\n\n\n<li>B. \ubb38\uc81c \uc694\uad6c \ud574\uc11d\u00b7\uc644\uc804\uc131: \ud798 \ud574\uc11d, Fail-Safe \uae30\uc900, \uc720\uc9c0\ubcf4\uc218 \ud56d\ubaa9 \ub4f1 \uc694\uad6c\uc0ac\ud56d\uc744 \ubaa8\ub450 \ucda9\uc871\ud568.<\/li>\n\n\n\n<li>C. \uc720\ud615\ubcc4 Fact \uae30\ubc18 \ub0b4\uc6a9 \uc124\uba85: \ud575\uc2ec \uac1c\ub150\uacfc \ubb3c\ub9ac\uc801 \uc6d0\ub9ac\ub97c \uc218\uc2dd\uacfc \ub3c4\uc2dd \ud65c\uc6a9\uc73c\ub85c \uc815\ud655\ud788 \uc124\uba85\ud568.<\/li>\n\n\n\n<li>D. \ud604\uc7a5 \uc801\uc6a9\u00b7\uc124\uacc4 \ud310\ub2e8\u00b7\uc81c\uc5b8: \ud604\uc7a5 \uc5d4\uc9c0\ub2c8\uc5b4\ub9c1 \uad00\uc810\uc758 \ub300\ucc45\uacfc CBM \uc801\uc6a9 \ubc29\uc548\uc774 \uad6c\uccb4\uc801\uc784.<\/li>\n\n\n\n<li>E. \uc5f0\uacb0\uc131\u00b7\uba74\uc811 \ubc29\uc5b4 \uac00\ub2a5\uc131: \uc774\ub860 \ud574\uc11d\uc5d0\uc11c \ud604\uc7a5 \uc801\uc6a9\uae4c\uc9c0\uc758 \ub17c\ub9ac\uc801 \uc5f0\uacb0\uc740 \uc790\uc5f0\uc2a4\ub7ec\uc6b0\ub098, \uc5f0\uacb0\uc5b4 \ubcf4\uac15\uc774 \ud544\uc694\ud568.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">[\ubcf4\uc644 \ubc29\ud5a5]<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ub2f5\uc548 \uad6c\uc870\ub97c &#8216;\ubc30\uacbd \u2192 \ubb38\uc81c \uc694\uad6c \u2192 \uc720\ud615\ubcc4 Fact \uc124\uba85 \u2192 \ud604\uc7a5 \uc801\uc6a9\/\uc124\uacc4 \ud310\ub2e8\/\uc81c\uc5b8&#8217; \uc21c\uc11c\ub85c \ud655\uc7a5\ud558\uc5ec \uc804\uac1c\ud558\uc138\uc694.<\/li>\n\n\n\n<li>\ud604\uc7a5 \uc801\uc6a9\/\uc81c\uc5b8 \uc2dc \ube44\uc6a9, \uc2dc\uac04, \uc801\uc6a9 \uac00\ub2a5\uc131, \uc6b4\uc804 \ub9ac\uc2a4\ud06c \ub4f1 \ub2e4\uac01\uc801\uc778 \uc694\uc18c\ub97c \uc5f0\uacb0\ud558\uc5ec \uc2ec\ud654\ud558\uc138\uc694.<\/li>\n\n\n\n<li>\ud68c\uc804\uc2dd \ubc38\ube0c(Rotary Valve)\uc758 \ud1a0\ud06c \ud574\uc11d\uc5d0 \ub300\ud55c \uac04\ub7b5\ud55c \uc5b8\uae09\uc744 \ucd94\uac00\ud558\uba74 \uc644\uc131\ub3c4\uac00 \ub192\uc544\uc9c8 \uac83\uc785\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\ubaa8\ub4e0 \ubb38\uc81c \uc720\ud615\uc5d0\uc11c \ud604\uc7a5 \uc801\uc6a9\uc131, \ubb38\uc81c \ud574\uacb0, \uc81c\uc5b8, \uae30\uc220\uc0ac\uc801 \ud310\ub2e8\uc131\uc744 \ubc18\ub4dc\uc2dc \uc5f0\uacb0\ud558\ub294 \uc5f0\uc2b5\uc774 \ud544\uc694\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">[\uc694\uad6c\uc0ac\ud56d \ucda9\uc871\ub3c4]<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ubb38\uc81c \uc720\ud615 lens: \uc6d0\ub9ac\u00b7\ud574\uc11d\ud615(PRINCIPLE_INTERPRETATION)<\/li>\n\n\n\n<li>\uc804\uccb4 \ud310\uc815: strong<\/li>\n\n\n\n<li>\uc694\uad6c\uc0ac\ud56d \ucda9\uc871\ub960: 100.0% (\uac00\uc911 7\/7)<\/li>\n\n\n\n<li>\uc0c1\ud0dc: \ucda9\uc871 7 \u00b7 \ubd80\ubd84 0 \u00b7 \uc624\ub2f5 0 \u00b7 \ub204\ub77d 0<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">\ubd84\ub7c9 \uc218\uc815, \ubc38\ube0c \ub0b4\uc6a9 \ubcf4\uc644 \ud6c4  \uc7ac \ucc44\uc810.<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">[26. 8. 6. \uc624\ud6c4 8:03] Bot name: \uae30\uc220\uc0ac \ub2f5\uc548 \ucc44\uc810\uae30 Bot username: prof_eng_answer_bot: \uc0c8 \ucc44\uc810 \uc138\uc158\uc744 \ub9cc\ub4e4\uc5c8\uc2b5\ub2c8\ub2e4.<br>\uc138\uc158: 20260806_110308_5960502198<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc0ac\uc9c4 3\uc7a5\uc744 \uc62c\ub9ac\uace0, OCR \ud14d\uc2a4\ud2b8\ub294 \/grade \ub4a4\uc5d0 \ubd99\uc5ec \ubcf4\ub0b4\uace0, \uc5ec\ub7ec \uba54\uc2dc\uc9c0\ub85c \ub098\ub20c \ub54c\ub294 \ub9c8\uc9c0\ub9c9 \uc904\uc5d0 &#8216;\ub05d.&#8217;\uc744 \ubcf4\ub0b4\uc138\uc694.<br>[26. 8. 6. \uc624\ud6c4 8:03] \uc774 \ub300\uc6d0: \/grade<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uacf5\uc555\uc2dd \uad6c\ub3d9\uae30 \uc120\uc815\uc2dc \uace0\ub824\ud574\uc57c \ud560 \ubc38\ube0c \ubd88\ud3c9\ud615\ub825, \ub9c8\ucc30\ub825 \uac1c\ub150 \uc124\uba85, Fail Safe \ub3d9\uc791\uad6c\ud604\uc744 \uc704\ud55c Spring \uc124\uacc4 \uae30\uc900 \uc124\uba85<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\ubc30\uacbd<br>1) \ubc38\ube0c\ub294 actuator\uac00 plug\uc5d0 \ud798\uc744 \uc778\uac00\ud558\uc5ec \uc720\ub7c9\uc744 \uc870\uc808\ud55c\ub2e4.<br>2) Factuator : Actuator\uc5d0 \uc791\uc6a9\ud558\ub294 \ud798<br>(1) \ubd88\ud3c9\ud615\ub825 : dP (Upstream \uc555\ub825 P1 &#8211; Downstream \uc555\ub825 P2)<br>(2) Seat load : \ubc38\ube0c\uac00 \ub2eb\ud614\uc744 \uacbd\uc6b0 \uae30\ubc00\uc744 \uc720\uc9c0\ud558\ub294 \ud798<br>(3) Spring \ud798 : bench set \ud6c4 fail safe\ub85c \uc6c0\uc9c1\uc774\uae30\uc704\ud55c \ud798<br>(4) Factuator + F\uc2a4\ud504\ub9c1 = F\ubd88\ud3c9\ud615 + F\ub9c8\ucc30\ub825 + Fseat load + F\uae30\ud0c0<br>(5) \ub9c8\ucc30\ub825 : Stem\uc744 \uc7a1\uc544\uc8fc\ub294 \ud798 (body). \uae30\ubc00\uc744 \uc720\uc9c0.<br>3) Fail Safe\ub294 \uacf5\uae09 \uc555\ub825, \uc5d0\ub108\uc9c0\uc6d0\uc774 \ucc28\ub2e8\ub418\uc5c8\uc744 \uacbd\uc6b0 fail state\ub85c \ub3cc\uc544\uac00\ub294 \ub3d9\uc791<br>4) Actuator \uc120\uc815\uc2dc \uc704 \uc0ac\ud56d\uc744 \uace0\ub824\ud558\uc5ec \ubc38\ube0c \uc120\uc815<\/li>\n\n\n\n<li>\ubcf8\ubb38<br>1) \ubc38\ube0c \ubd88\ud3c9\ud615\ub825<br>(1) Plug\uac00 P1 &#8211; P2 = dP\uc640 \uc720\ud6a8 \uba74\uc801\uc5d0 \uc791\uc6a9\ud558\ub294 \ud798 F\ubd88\ud3c9\ud615\ub825\uc744 \uadf9\ubcf5<br>(2) \ubd88\ud3c9\ud615\ub825\uc740 actuator \ud06c\uae30\ub97c \ud0a4\uc6c0<br>(3) Plug\uc5d0 \uad6c\uba4d\uc744 \ub0b4\uc11c Stem\uc758 \uc720\ud6a8 \uba74\uc801\uc5d0 \uc758\ud55c \ud798\ub9cc \ub0b4\ub3c4\ub85d actuator \uad6c\uc131 -&gt; balanced Trim<br>(4) Balanced trim\uc740 actuator \uc18c\ud615\ud654 \uac00\ub2a5. 2) \ub9c8\ucc30\ub825<br>(1) Stem\uc744 body\uac00 \uae30\ubc00\uc744 \uc720\uc9c0\ud558\ub3c4\ub85d \uc7a1\uc544\uc57c \ud568. \ub9c8\ucc30\ub825\uc774 \ubd80\uc871\ud560 \uacbd\uc6b0 \uc628\uc2e4\uac00\uc2a4, \ud658\uacbd\uc5d0 \uc545\uc601\ud5a5 \ubc1c\uc0dd Fugitive Emission<br>(2) \ub9c8\ucc30\ub825\uc740 stem \uc6c0\uc9c1\uc774\ub294 \ubd80\ubd84\uc5d0\uc11c \ubc1c\uc0dd<br>(3) Plug\uac00 seat\ub97c \uaf2d \ub204\ub974\ub294 \ud798\uc744 \uace0\ub824\uc2dc, \ucd5c\ub300 actuator\ub97c \uacc4\uc0b0\uc2dc \ubc38\ube0c\uac00 \uc774\ub3d9\uc911\uc774\ubbc0\ub85c \ub9c8\ucc30\ub825 \uace0\ub824 \ud544\uc694 3) Spring, bench set<br>(1) \uc5d0\ub108\uc9c0\uac00 \ucc28\ub2e8\ub420 \uacbd\uc6b0 fail state\ub85c \uc774\ub3d9. =&gt; spring\uc774 \uc774 \uc5ed\ud560\uc744 \uc218\ud589<br>(2) Bench set\uc73c\ub85c offset\uc744 \uc870\uc815.<br>(3) Bench set\uc740 \uc791\ub3d9 \uc555\ub825\uc73c\ub85c \uc2dc\ud589.<br>(4) Spring \uc124\uacc4 \uae30\uc900<br>(a) Factuator + Fspring = Fseat load + F\ubd88\ud3c9\ud615\ub825 + F\ub9c8\ucc30\ub825 + F\uae30\ud0c0 \uac00 \ub9cc\uc871\ud558\ub3c4\ub85d \uc124\uc815<br>(b) Fail Safe \ub3d9\uc791\uc744 \uc704\ud574\uc11c\ub294 Factuator = 0<br>=&gt; Fspring = Fseat load + F\ubd88\ud3c9\ud615 + F\ub9c8\ucc30\ub825 \uc774 \ub9cc\uc871\ud558\ub3c4\ub85d \uc124\uacc4, \ub2e8 \uc5ec\uae30\uc5d0\uc11c F\ub9c8\ucc30\ub825 = 0 \uc73c\ub85c \uc124\uc815.<\/li>\n\n\n\n<li>\uacb0\ub860<br>1) Fail state\uc758 \uc0c1\ud0dc\ub97c \ud655\uc778 \ud6c4 Fail Safe \uc124\uc815\ud55c\ub2e4.<br>2) Bench set \uc774\ud6c4 spring\uc758 \uc8fc\uae30\uc801 \uc810\uac80 \ud544\uc694<br>(1) Analog valve\uc758 \uacbd\uc6b0 \uc9c4\ub2e8\uc744 \uc704\ud55c \uc815\ubcf4\ub97c \uc5bb\uae30 \uc5b4\ub824\uc6c0<br>(2) Digital valve\ub85c \uad50\uccb4\ud558\uc5ec TBM -&gt; CBM \uc73c\ub85c \ubcc0\ud658 \ud544\uc694<br>3) \uc6d0\ud65c\ud55c \ub3d9\uc791\ud655\uc778\uc744 (fail state) \uc704\ud574 PST\ub97c \uc218\ud589<br>(1) \uc815\ud655\ud558\uac8c full stroke\uae4c\uc9c0 \uc6c0\uc9c1\uc774\ub294 \uc9c0 \ud655\uc778 \ud544\uc694<br>(2) SIS\ub97c \uc124\uc815\ud558\uc5ec \uc0ac\uace0\uac00 \ubc1c\uc0dd\ud558\uc9c0 \uc54a\uace0, \uad6d\uc81c \ud45c\uc900\uc5d0 \ub9de\ub294 \uacf5\uc7a5 \uc6b4\uc6a9 \ud544\uc694.<br>\ub05d.<br>[26. 8. 6. \uc624\ud6c4 8:03] Bot name: \uae30\uc220\uc0ac \ub2f5\uc548 \ucc44\uc810\uae30 Bot username: prof_eng_answer_bot: \ucc44\uc810\uc744 \uc2dc\uc791\ud569\ub2c8\ub2e4.<br>\ucc44\uc810 \uc5d4\uc9c4: Gemini semantic grader + Python scoring rules<br>\ubcf4\uc870 \ubaa8\ub378: gemma4:e4b<br>[26. 8. 6. \uc624\ud6c4 8:04] Bot name: \uae30\uc220\uc0ac \ub2f5\uc548 \ucc44\uc810\uae30 Bot username: prof_eng_answer_bot: \ucc44\uc810 \uc644\ub8cc: 14.7\/25.0<br>\uc608\uc0c1 \uc810\uc218\ub300: 14.2~15.2<br>\uc2e0\ub8b0\ub3c4: high<br>\uacf5\uc2dd \ud569\uaca9\uc120: 15.0\uc810 (\ubbf8\ub2ec)<br>\uc2e4\uc804 \ubaa9\ud45c\uc120: 17.5\uc810 (\ubbf8\ub2ec)<br>\uace0\ub4dd\uc810 \uae30\uc900: 20.0\uc810 (\ubbf8\ub2ec)<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\ud310\uc815: \uc810\uc218 14.7\uc810 (\ubbf8\ub2ec) &#8211; \uc815\ub7c9\uc801 \uc124\uacc4 \ud574\uc11d \ubc0f \ucd5c\uc545 \uc870\uac74 \uace0\ub824 \ud544\uc694<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ucd1d\ud3c9: \uc81c\uc5b4\ubc38\ube0c \uad6c\ub3d9\uae30 \uc120\uc815\uc758 \ud575\uc2ec \uc694\uc18c(\ubd88\ud3c9\ud615\ub825, \ub9c8\ucc30\ub825, \uc2a4\ud504\ub9c1)\ub97c \uccb4\uacc4\uc801\uc73c\ub85c \uc124\uba85\ud558\uace0 \ud604\uc7a5 \uc801\uc6a9 \ubc29\uc548\uae4c\uc9c0 \ub17c\ub9ac\uc801\uc73c\ub85c \uc804\uac1c\ud588\uc2b5\ub2c8\ub2e4. \ub2e4\ub9cc, \uae30\uc220\uc0ac \ub2f5\uc548\uc5d0 \uc694\uad6c\ub418\ub294 \uc815\ub7c9\uc801 \uc124\uacc4 \uace0\ub824\uc0ac\ud56d\uc774\ub098 \ucd5c\uc545 \uc870\uac74(Worst-case)\uc5d0 \ub300\ud55c \uc2ec\uce35 \ud574\uc11d\uc774 \ubd80\uc871\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[\ud575\uc2ec \ud310\uc815 \uadfc\uac70]<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud575\uc2ec \ubb3c\ub9ac\uc801 \ud798(\ubd88\ud3c9\ud615\ub825, \ub9c8\ucc30\ub825)\uacfc Fail-Safe \uc124\uacc4 \uc6d0\ub9ac\ub294 \uc798 \uc124\uba85\ub418\uc5c8\uc73c\ub098, \uc815\ub7c9\uc801 \uc124\uacc4 \ub9c8\uc9c4\uc774\ub098 \ucd5c\uc545 \uc870\uac74 \ud574\uc11d\uc774 \ubbf8\ud761\ud568.<\/li>\n\n\n\n<li>\ub2f5\uc548 \uad6c\uc870\ub294 \ub17c\ub9ac\uc801 \ud750\ub984\uc744 \uac16\ucd94\uc5c8\uc73c\ub098, \uae30\uc220\uc0ac\uc801 \ud310\ub2e8\uc131(D\/E \ud56d\ubaa9)\uc5d0\uc11c \ube44\uc6a9\/\ub9ac\uc2a4\ud06c \ubd84\uc11d \ub4f1 \uc2ec\ud654\ub41c \uc5f0\uacb0\uc774 \ud544\uc694\ud568.<\/li>\n\n\n\n<li>C\ud56d\ubaa9\uc5d0\uc11c \uc694\uad6c\ub418\ub294 \uc815\ub7c9\uc801 \ubcc0\uc218 \uc815\uc758 \ubc0f \ucd5c\uc545 \uc6b4\uc804 \uc870\uac74(Worst-case)\uc5d0 \ub300\ud55c \uc2ec\uce35 \ud574\uc11d\uc774 \ubd80\uc871\ud568.<\/li>\n\n\n\n<li>\uc804\ubc18\uc801\uc73c\ub85c \ubc30\uacbd\u2192\uc694\uad6c\u2192\uc6d0\ub9ac\u2192\ud604\uc7a5 \uc801\uc6a9\uc758 \ud750\ub984\uc740 \uc88b\uc73c\ub098, \uac01 \ub2e8\uacc4 \uac04\uc758 \uae30\uc220\uc0ac\uc801 \ud310\ub2e8 \uc5f0\uacb0\uace0\ub9ac\uac00 \uc57d\ud568.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">[\ud56d\ubaa9\ubcc4 \ud575\uc2ec \uadfc\uac70]<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \uad6c\uc870: \ubc30\uacbd\ubd80\ud130 \uacb0\ub860\uae4c\uc9c0\uc758 \ud750\ub984\uc740 \uba85\ud655\ud558\uace0 \ubaa9\ucc28 \uad6c\uc131\uc774 \ub17c\ub9ac\uc801\uc784.<\/li>\n\n\n\n<li>B. \uc694\uad6c \ud574\uc11d: \ubd88\ud3c9\ud615\ub825, \ub9c8\ucc30\ub825, \uc2a4\ud504\ub9c1 \uc124\uacc4 \uae30\uc900 \ub4f1 \ubb38\uc81c \uc694\uad6c\uc0ac\ud56d\uc744 \ubaa8\ub450 \ud3ec\ud568\ud568.<\/li>\n\n\n\n<li>C. Fact \uc124\uba85: \ud575\uc2ec \uac1c\ub150\uc740 \uc815\ud655\ud558\ub098, \uc815\ub7c9\uc801 \ubcc0\uc218 \uc815\uc758\ub098 \ucd5c\uc545 \uc870\uac74 \ud574\uc11d\uc774 \ubd80\uc871\ud558\uc5ec \uac10\uc810 \uc694\uc778\uc784.<\/li>\n\n\n\n<li>D. \ud604\uc7a5 \ud310\ub2e8: \uc720\uc9c0\ubcf4\uc218 \uc804\ub7b5(TBM to CBM) \uc81c\uc2dc \ub4f1 \ud604\uc7a5 \uc801\uc6a9 \uad00\uc810\uc758 \uc81c\uc5b8\uc740 \uc6b0\uc218\ud568.<\/li>\n\n\n\n<li>E. \uc5f0\uacb0\uc131: \ub17c\ub9ac\uc801 \uc5f0\uacb0\uc131\uc740 \uc6b0\uc218\ud558\ub098, \uae30\uc220\uc0ac\uc801 \ud310\ub2e8\uc744 \ub4b7\ubc1b\uce68\ud558\ub294 \uc815\ub7c9\uc801\/\uacbd\uc81c\uc801 \uc5f0\uacb0\uc774 \uc57d\ud568.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">[\ubcf4\uc644 \ubc29\ud5a5]<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ub2f5\uc548 \uad6c\uc870\ub97c &#8216;\ubc30\uacbd \u2192 \ubb38\uc81c \uc694\uad6c \u2192 \uc6d0\ub9ac\/\uc774\ub860 \u2192 \uc815\ub7c9\uc801 \uc124\uacc4 \ud574\uc11d(Worst-case) \u2192 \ud604\uc7a5 \uc801\uc6a9\/\uc81c\uc5b8(\ube44\uc6a9\/\ub9ac\uc2a4\ud06c)&#8217; \uc21c\uc73c\ub85c \ud655\uc7a5\ud558\uc138\uc694.<\/li>\n\n\n\n<li>\ub9c8\ucc30\ub825 \uc124\uba85 \uc2dc \uc815\uc801 \ub9c8\ucc30(Breakaway)\uacfc \ub3d9\uc801 \ub9c8\ucc30(Running)\uc744 \uad6c\ubd84\ud558\uc5ec \uae30\uc220\ud558\uace0, \uc2a4\ud504\ub9c1 \uc124\uacc4 \uc2dc \uacf5\uae09 \uc555\ub825 \ubcc0\ub3d9\uc131(Margin)\uc744 \ubc18\ub4dc\uc2dc \uc5b8\uae09\ud558\uc138\uc694.<\/li>\n\n\n\n<li>C\ud56d\ubaa9 \ubcf4\uc644 \uc2dc, \ud798 \ud3c9\ud615\uc2dd\uc5d0 \uc0ac\uc6a9\ub418\ub294 \ubcc0\uc218\ub4e4\uc758 \uc815\ub7c9\uc801 \ubc94\uc704(Min\/Max)\uc640 \uadf8\uc5d0 \ub530\ub978 \uc5ec\uc720\uc728(Margin) \uac1c\ub150\uc744 \ucd94\uac00\ud558\uc5ec \uae4a\uc774\ub97c \ub354\ud574\uc57c \ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>D\/E\ud56d\ubaa9\uc5d0\uc11c \ud604\uc7a5 \uc801\uc6a9 \uc2dc \ube44\uc6a9-\uc131\ub2a5 Trade-off \ubd84\uc11d\uc774\ub098 \uc6b4\uc804 \ub9ac\uc2a4\ud06c \ubd84\uc11d\uc744 \uc5f0\uacb0\ud558\uc5ec \uae30\uc220\uc0ac\uc801 \ud310\ub2e8\uc131\uc744 \uadf9\ub300\ud654\ud574\uc57c \ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">[\uc694\uad6c\uc0ac\ud56d \ucda9\uc871\ub3c4]<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ubb38\uc81c \uc720\ud615 lens: \uc6d0\ub9ac\u00b7\ud574\uc11d\ud615(PRINCIPLE_INTERPRETATION)<\/li>\n\n\n\n<li>\uc804\uccb4 \ud310\uc815: strong<\/li>\n\n\n\n<li>\uc694\uad6c\uc0ac\ud56d \ucda9\uc871\ub960: 85.7% (\uac00\uc911 6\/7)<\/li>\n\n\n\n<li>\uc0c1\ud0dc: \ucda9\uc871 5 \u00b7 \ubd80\ubd84 2 \u00b7 \uc624\ub2f5 0 \u00b7 \ub204\ub77d 0<\/li>\n\n\n\n<li>\ubd80\ubd84 \ucda9\uc871: formula_model_variables, calculation_or_interpretation<\/li>\n\n\n\n<li>\ubd80\uc871\ud55c \uc138\ubd80 \ubc94\uc8fc: formula_model_variables, calculation_or_interpretation<\/li>\n\n\n\n<li>C\ud56d\ubaa9 \ubcf4\uc644 \ud544\uc694: \uc815\ub7c9\uc801 \uc124\uacc4 \ubcc0\uc218 \uc0c1\uc138<\/li>\n\n\n\n<li>D\ud56d\ubaa9 \ubcf4\uc644 \ud544\uc694: \ube44\uc6a9 \ub300\ube44 \ud6a8\uacfc \ubd84\uc11d<\/li>\n\n\n\n<li>coverage \ubcf4\uc815 \ud6c4\ubcf4: -0.22\uc810, mode=warn<br>[26. 8. 6. \uc624\ud6c4 8:04] Bot name: \uae30\uc220\uc0ac \ub2f5\uc548 \ucc44\uc810\uae30 Bot username: prof_eng_answer_bot: \uc800\uc7a5 \uc704\uce58: \/workspace\/prof_eng_answer\/data\/sessions\/20260806_110308_5960502198<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">\ubaa8\ubc94 \ub2f5\uc548 \ubc0f \ud3c9\uac00<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">[26. 8. 6. \uc624\ud6c4 8:09] \uc774 \ub300\uc6d0: \/grade<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uacf5\uc555\uc2dd \uad6c\ub3d9\uae30 \uc120\uc815\uc2dc \uace0\ub824\ud574\uc57c \ud560 \ubc38\ube0c \ubd88\ud3c9\ud615\ub825, \ub9c8\ucc30\ub825 \uac1c\ub150 \uc124\uba85, Fail Safe \ub3d9\uc791\uad6c\ud604\uc744 \uc704\ud55c Spring \uc124\uacc4 \uae30\uc900 \uc124\uba85<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\uac1c\uc694 \ubc0f \uc124\uacc4 \uace0\ub824\uc0ac\ud56d<br>1) \uacf5\uc555\uc2dd \uad6c\ub3d9\uae30(Actuator)\ub294 Process \uc720\ub7c9 \uc81c\uc5b4\ub97c \uc704\ud574 Valve Stem\uc5d0 \ud798\uc744 \uc778\uac00\ud558\ub294 \ud575\uc2ec \uc694\uc18c\uc784.<br>2) \uad6c\ub3d9\uae30 \uc120\uc815 \uc2dc \uc720\uccb4 \uc5ed\ud559\uc801 \ud798(\ubd88\ud3c9\ud615\ub825), \uba54\ucee4\ub2c8\uc998 \ud798(\ub9c8\ucc30\ub825, Seat load), \uc548\uc804 \ub3d9\uc791(Fail-Safe) \uc870\uac74\uc5d0 \ub530\ub978 \uc2a4\ud504\ub9c1 \ud0c4\uc131\ub825\uc744 \uc885\ud569\uc801\uc73c\ub85c \uacc4\uc0b0\ud558\uc5ec \ucd5c\uc545 \uc870\uac74(Worst-case)\uc5d0\uc11c\ub3c4 \ud655\uc2e4\ud55c \ub3d9\uc791\uc774 \ubcf4\uc99d\ub418\ub3c4\ub85d \uc124\uacc4\ud574\uc57c \ud568.<br>3) Actuator \ud544\uc694 \ucd9c\ub825 forces (Factuator) :<br>Factuator + Fspring = F\ubd88\ud3c9\ud615 + F\ub9c8\ucc30\ub825 + Fseat load + F\uae30\ud0c0<\/li>\n\n\n\n<li>\ud575\uc2ec \uc5b5\uc81c\ub825 \uac1c\ub150 \ubc0f \uc815\ub7c9\uc801 \ud574\uc11d<br>1) \ubc38\ube0c \ubd88\ud3c9\ud615\ub825 (Unbalanced Force, F\ubd88\ud3c9\ud615)<br>(1) \uc6d0\uc778 : Valve Plug \uc804\ud6c4\uc758 \ucc28\uc555 \u0394P (P1: Upstream &#8211; P2: Downstream) \ubc0f Effective Area(Aplug)\uc5d0 \uc758\ud574 \ubc1c\uc0dd.<br>(2) \uc815\ub7c9 \uc218\uc2dd : F\ubd88\ud3c9\ud615 = \u0394P \u00d7 Aplug = (P1 &#8211; P2) \u00d7 Aplug<br>(3) \ucd5c\uc545 \uc870\uac74 (Worst-case) : \ubc38\ube0c \uc644\uc804 \ub2eb\ud798(Full Close) \uc9c1\uc804 \u0394P\uac00 \ucd5c\ub300(\u0394Pmax)\uac00 \ub418\ubbc0\ub85c F\ubd88\ud3c9\ud615\uc774 \uadf9\ub300\ud654\ub418\uc5b4 Actuator \uc18c\ud615\ud654\uc758 \uc81c\uc57d \uc694\uc778\uc73c\ub85c \uc791\uc6a9.<br>(4) \uacbd\uac10 \ub300\ucc45 : Plug internal port\uc5d0 \uc720\ub85c\ub97c \ud615\uc131\ud558\ub294 Balanced Trim \uc801\uc6a9 \uc2dc \ucc28\uc555\uc744 \uc0c1\uc1c4\ud558\uc5ec Actuator Size \ubc0f \ub3d9\ub825 \ube44\uc6a9 \uc808\uac10 \uac00\ub2a5. 2) \ub9c8\ucc30\ub825 (Friction Force, F\ub9c8\ucc30\ub825)<br>(1) \uc6d0\uc778 : Gland Packing\uacfc Stem \uac04\uc758 \ub9c8\ucc30, Guide\ubd80 \uc811\ucd09 \ub9c8\ucc30\uc5d0 \uc758\ud574 \ubc1c\uc0dd. Packing Tightening\uc774 \uacfc\ub3c4\ud560 \uacbd\uc6b0 Fugitive Emission(\uc628\uc2e4\uac00\uc2a4\/\uc720\ud574\ubb3c\uc9c8 \ub204\ucd9c) \ubc29\uc9c0\ub294 \uc720\ub9ac\ud558\ub098 \ub9c8\ucc30\ub825 \uae09\uc99d.<br>(2) \uad6c\ubd84 \ubc0f \ud2b9\uc9d5 :<br>\u2460 \uc815\uc801 \ub9c8\ucc30\ub825 (Breakaway Friction) : \ubc38\ube0c \uc815\uc9c0 \uc0c1\ud0dc\uc5d0\uc11c \ub3d9\uc791 \uc2dc\uc791 \uc2dc \ubc1c\uc0dd\ud558\uba70, \ub3d9\uc801 \ub9c8\ucc30\ubcf4\ub2e4 \ucee4\uc11c \ubc38\ube0c Stick-slip \ud604\uc0c1 \uc720\ubc1c.<br>\u2461 \ub3d9\uc801 \ub9c8\ucc30\ub825 (Running Friction) : Stem \uc774\ub3d9 \uc911 \ubc1c\uc0dd\ud558\ub294 \uc5f0\uc18d\uc801 \ub9c8\ucc30\ub825.<br>(3) \ucd5c\uc545 \uc870\uac74 : \ubc38\ube0c\uac00 \uc815\uc9c0 \ud6c4 \ucd5c\ucd08 \uad6c\ub3d9\ud558\ub294 \uc2dc\uc810(Breakaway)\uc5d0 \ucd5c\ub300 \ub9c8\ucc30\ub825\uc774 \uc791\uc6a9\ud558\ubbc0\ub85c Actuator \uacc4\uc0b0 \uc2dc \uc815\uc801 \ub9c8\ucc30\ub825 \uae30\uc900 \uc124\uacc4 \ud544\uc694. 3) \uc2dc\ud2b8 \ub85c\ub4dc (Seat Load Force, Fseat load)<br>(1) \ubc38\ube0c \uc644\ud3d0 \uc2dc Shut-off \uae30\ubc00 \ub4f1\uae09(Class IV~VI) \ub9cc\uc871\uc744 \uc704\ud574 Seat ring\uacfc Plug \uac04 \ubc00\ucc29\uc5d0 \ud544\uc694\ud55c \ud798.<br>(2) \uc815\ub7c9 \uc218\uc2dd : Fseat load = C (Seat Sealing Force Factor) \u00d7 Linear Seat Contact Length<\/li>\n\n\n\n<li>Fail-Safe \ub3d9\uc791 \uad6c\ud604\uc744 \uc704\ud55c Spring \uc124\uacc4 \uae30\uc900<br>1) Fail-Safe \uac1c\ub150 \ubc0f \ub3d9\uc791 \uc6d0\ub9ac<br>(1) \uacf5\uc555 \uacf5\uae09 \uc911\ub2e8(Air Fail) \ub610\ub294 Control Signal \uc0c1\uc2e4 \uc2dc, \uc548\uc804\ud55c \uc0c1\ud0dc(Fail-Open \/ Fail-Close)\ub85c \uc989\uc2dc \uc774\ub3d9\ud558\ub294 \ub2a5\ub3d9\uc801 \uc548\uc804 \uae30\ub2a5.<br>(2) \uacf5\uc555 \ucc28\ub2e8 \uc2dc Factuator = 0 \uc774 \ub418\ubbc0\ub85c, \uc624\uc9c1 Spring \ud0c4\uc131\ub825(Fspring)\ub9cc\uc73c\ub85c \ubaa8\ub4e0 \uc5b5\uc81c\ub825\uc744 \uadf9\ubcf5\ud558\uace0 Safe Position\uc744 \ud655\ubcf4\ud574\uc57c \ud568. 2) Spring \uc815\ub7c9 \uc124\uacc4 \uae30\uc900 \ubc0f \ucd5c\uc545 \uc870\uac74 \uc801\uc6a9<br>(1) Fail-Safe \uc124\uacc4 \uae30\ubcf8\uc2dd :<br>Factuator = 0 \uc77c \ub54c, Fspring \u2265 F\ubd88\ud3c9\ud615 + Fseat load + F\ub9c8\ucc30\ub825 + F\uae30\ud0c0<br>(2) \ucd5c\uc545 \uc870\uac74(Worst-case) \ubc18\uc601 :<br>\ub9c8\ucc30\ub825\uc740 \ubc18\ub300 \ubc29\ud5a5(\ube44\ud611\uc870)\uc73c\ub85c \uc791\uc6a9\ud560 \uc218 \uc788\uc73c\ub098, \uc548\uc804 \uce21 \uc124\uacc4\ub97c \uc704\ud574 \ucd5c\uc18c \uc608\ube44\ub825\uc744 \ud655\ubcf4\ud558\uace0, \ub9c8\ucc30\ub825 \ubcc0\ub3d9\uc131\uc744 \uace0\ub824\ud558\uc5ec \ub9c8\uc9c4 \uc124\uc815.<br>(3) \uc124\uacc4 \uc5ec\uc720\uc728(Design Safety Margin) \uc801\uc6a9 :<br>Fspring(required) = (F\ubd88\ud3c9\ud615_max + Fseat load) \u00d7 SF (Safety Factor: \ubcf4\ud1b5 1.2~1.5) + Fbreakaway_friction<br>(4) Bench Set \uc870\uc815 \uae30\uc900 :<br>\u2460 Spring\uc758 Span(\uace0\uc720 \uc2a4\ud504\ub9c1 \uc0c1\uc218 k)\uc5d0 \ub300\ud574, \uc124\uce58 \uc2dc Pre-compression(\ucd08\uae30 \ubcc0\ud615\ub7c9 x0)\uc744 \uc870\uc815\ud558\uc5ec Offset(\uc2dc\uc791 \uad6c\ub3d9 \uc555\ub825)\uc744 \uc124\uc815.<br>\u2461 Fspring = k \u00d7 (x0 + Stroke) \uc2dd\uc5d0 \ub530\ub77c Full Stroke \uc704\uce58\uc5d0\uc11c\ub3c4 \uc644\ubcbd\ud55c Fail-Safe \ud798\uc774 \uc720\uc9c0\ub418\ub3c4\ub85d calibration \uc9c4\ud589.<\/li>\n\n\n\n<li>\uacb0\ub860 \ubc0f \ud604\uc7a5 \uc801\uc6a9\/\uc81c\uc5b8<br>1) \uacf5\uc555\uc2dd \uad6c\ub3d9\uae30 \uc124\uacc4\ub294 \ub2e8\uc21c \uc0c1\uc6a9 \uc870\uac74\uc774 \uc544\ub2cc \ucd5c\uc545 \ucc28\uc555(\u0394Pmax) \ubc0f \uc815\uc801 \ub9c8\ucc30\ub825(Breakaway)\uc744 \uae30\uc900\uc73c\ub85c \uc124\uacc4 \uc5ec\uc720\uc728(SF 1.2 \uc774\uc0c1)\uc744 \ud655\ubcf4\ud574\uc57c \ud568.<br>2) \uc720\uc9c0\ubcf4\uc218 \ubc0f \uc9c4\ub2e8 \uccb4\uacc4 \uace0\ub3c4\ud654 (TBM \u2192 CBM) :<br>(1) \uae30\uc874 \uc544\ub0a0\ub85c\uadf8 \ubc38\ube0c \uae30\ubc18 \uc8fc\uae30\uc801 \uc815\ube44(TBM) \ubc29\uc2dd\uc740 Stem \ub9c8\ucc30\ub825 \ubcc0\ud654\ub098 Spring \uc7a5\ub825 \uc57d\ud654\ub97c \uc815\ubc00\ud558\uac8c \uc9c4\ub2e8\ud558\uae30 \uc5b4\ub824\uc6c0.<br>(2) Smart Positioner \ub3c4\uc785\uc744 \ud1b5\ud574 \ub514\uc9c0\ud138 \uc9c4\ub2e8 \ub370\uc774\ud130\ub97c \ud655\ubcf4\ud558\uc5ec \uc0c1\ud0dc \uae30\ubc18 \uc815\ube44(CBM) \uccb4\uacc4\ub85c \uc804\ud658 \ud544\uc694.<br>3) Partial Stroke Test (PST) \ubc0f SIS \uc801\ud569\uc131 :<br>(1) \uc6b4\uc804 \uc911 \ubc38\ube0c\ub97c 10~15% \ubbf8\uc138 \uc791\ub3d9\uc2dc\ud0a4\ub294 PST\ub97c \uc8fc\uae30\uc801 \uc218\ud589\ud558\uc5ec Breakaway \ub9c8\ucc30\ub825 \uc774\uc0c1 \ubc0f Stem \uace0\ucc29(Stiction) \uc5ec\ubd80 \uac80\uc99d.<br>(2) \uc548\uc804\uacc4\uc804\uc2dc\uc2a4\ud15c(SIS) \ubc0f IEC 61508\/61511 \uad6d\uc81c \ud45c\uc900\uc5d0 \ubd80\ud569\ud558\ub294 SIL \ub4f1\uae09\uc744 \ud655\ubcf4\ud558\uc5ec \uacf5\uc7a5 \uc548\uc804 \uc6b4\uc6a9 \ub3c4\ubaa8.<br>\ub05d.<br>[26. 8. 6. \uc624\ud6c4 8:09] Bot name: \uae30\uc220\uc0ac \ub2f5\uc548 \ucc44\uc810\uae30 Bot username: prof_eng_answer_bot: \ucc44\uc810\uc744 \uc2dc\uc791\ud569\ub2c8\ub2e4.<br>\ucc44\uc810 \uc5d4\uc9c4: Gemini semantic grader + Python scoring rules<br>\ubcf4\uc870 \ubaa8\ub378: gemma4:e4b<br>[26. 8. 6. \uc624\ud6c4 8:12] Bot name: \uae30\uc220\uc0ac \ub2f5\uc548 \ucc44\uc810\uae30 Bot username: prof_eng_answer_bot: \ucc44\uc810 \uc644\ub8cc: 18.08\/25.0<br>\uc608\uc0c1 \uc810\uc218\ub300: 17.6~18.6<br>\uc2e0\ub8b0\ub3c4: high<br>\uacf5\uc2dd \ud569\uaca9\uc120: 15.0\uc810 (\ub2ec\uc131)<br>\uc2e4\uc804 \ubaa9\ud45c\uc120: 17.5\uc810 (\ub2ec\uc131)<br>\uace0\ub4dd\uc810 \uae30\uc900: 20.0\uc810 (\ubbf8\ub2ec)<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\ud310\uc815: \uacf5\uc555 \uad6c\ub3d9\uae30 \ubb3c\ub9ac\uc801 \uc6d0\ub9ac \ubc0f Fail-Safe \uc124\uacc4 \uc804\uac1c \uc6b0\uc218<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ucd1d\ud3c9: \uacf5\uc555 \uad6c\ub3d9\uae30\uc758 \ud575\uc2ec \ubb3c\ub9ac\uc801 \uac1c\ub150(\ubd88\ud3c9\ud615\ub825, \ub9c8\ucc30\ub825) \uc774\ud574\ub3c4\uac00 \ub192\uace0, Fail-Safe \uc124\uacc4 \uae30\uc900\uc744 \uc815\ub7c9\uc801 \uc218\uc2dd\uacfc \ud568\uaed8 \ub17c\ub9ac\uc801\uc73c\ub85c \uc804\uac1c\ud588\uc2b5\ub2c8\ub2e4. \ud604\uc7a5 \uc801\uc6a9\uc131 \uce21\uba74\uc758 \uae30\uc220\uc0ac\uc801 \uc81c\uc5b8\ub3c4 \ub9e4\uc6b0 \uc6b0\uc218\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[\ud575\uc2ec \ud310\uc815 \uadfc\uac70]<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uacf5\uc555 \uad6c\ub3d9\uae30\uc758 \ubd88\ud3c9\ud615\ub825, \ub9c8\ucc30\ub825 \ub4f1 \ubb3c\ub9ac\uc801 \uc5b5\uc81c\ub825 \uac1c\ub150\uc744 \uc815\ud655\ud788 \uc774\ud574\ud558\uace0 \uc124\uba85\ud568.<\/li>\n\n\n\n<li>Fail-Safe \ub3d9\uc791\uc744 \uc704\ud55c \uc2a4\ud504\ub9c1 \uc124\uacc4 \uae30\uc900\uc744 \uc815\ub7c9\uc801 \uc218\uc2dd\uacfc \ud568\uaed8 \ub17c\ub9ac\uc801\uc73c\ub85c \uc804\uac1c\ud568.<\/li>\n\n\n\n<li>TBM\u2192CBM \uc804\ud658, PST\/SIS \uc801\ud569\uc131 \ub4f1 \ud604\uc7a5 \uc2e4\ubb34\uc640 \uc5f0\uacc4\ub41c \uae30\uc220\uc0ac\uc801 \ud310\ub2e8\uc774 \uc6b0\uc218\ud568.<\/li>\n\n\n\n<li>\ub2f5\uc548\uc758 \uc804\ubc18\uc801\uc778 \ub17c\ub9ac\uc801 \uad6c\uc870\uc640 \uae4a\uc774\uac00 \ub6f0\uc5b4\ub098 \ub192\uc740 \ud3c9\uac00\ub97c \ubc1b\uc74c.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">[\ud56d\ubaa9\ubcc4 \ud575\uc2ec \uadfc\uac70]<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \uad6c\uc870: \uac1c\uc694-\ud575\uc2ec \uc5b5\uc81c\ub825-Fail-Safe-\ud604\uc7a5 \uc801\uc6a9 \uc21c\uc73c\ub85c \ub17c\ub9ac\uc801 \uad6c\uc870\ub97c \uac16\ucda4.<\/li>\n\n\n\n<li>B. \uc694\uad6c \ud574\uc11d: \ubd88\ud3c9\ud615\ub825, \ub9c8\ucc30\ub825 \uac1c\ub150 \uc124\uba85 \ubc0f Fail-Safe \uc2a4\ud504\ub9c1 \uc124\uacc4 \uae30\uc900 \ucda9\uc871.<\/li>\n\n\n\n<li>C. Fact \uc124\uba85: \ud575\uc2ec \uac1c\ub150 \uc778\uc9c0 \ubc0f \uc815\ud655\ud55c \uc124\uba85\uc774 \ub3cb\ubcf4\uc774\uba70, \ubb38\uc81c\uc810\uacfc\uc758 \uc5f0\uacb0\uc131\uc774 \uc6b0\uc218\ud568.<\/li>\n\n\n\n<li>D. \ud604\uc7a5 \ud310\ub2e8: TBM\u2192CBM \uc804\ud658, PST\/SIS \ud65c\uc6a9 \ub4f1 \uad6c\uccb4\uc801\uc774\uace0 \uc2e4\ubb34\uc801\uc778 \ub300\ucc45 \uc81c\uc2dc\uac00 \uc6b0\uc218\ud568.<\/li>\n\n\n\n<li>E. \uc5f0\uacb0\uc131: \ubc30\uacbd\ubd80\ud130 \uacb0\ub860\uae4c\uc9c0 \ub17c\ub9ac\uc801 \ud750\ub984\uc774 \uc790\uc5f0\uc2a4\ub7ec\uc6cc \uba74\uc811 \ubc29\uc5b4 \uac00\ub2a5\uc131\uc774 \ub192\uc74c.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">[\ubcf4\uc644 \ubc29\ud5a5]<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ub2f5\uc548 \uc804\uac1c \uc2dc &#8216;\ubc30\uacbd \u2192 \ubb38\uc81c \uc694\uad6c \u2192 \uc720\ud615\ubcc4 Fact \uc124\uba85 \u2192 \ud604\uc7a5 \uc801\uc6a9\u00b7\uc124\uacc4 \ud310\ub2e8\u00b7\uc81c\uc5b8&#8217; \uc21c\uc11c\ub85c \uad6c\uc870\ub97c \ud655\uc7a5\ud558\ub294 \uac83\uc774 \uc88b\uc74c.<\/li>\n\n\n\n<li>\ud604\uc7a5 \uc801\uc6a9\/\uc81c\uc5b8 \uc2dc \ube44\uc6a9, \uc2dc\uac04, \uc801\uc6a9 \uac00\ub2a5\uc131, \uae30\uc874 \uc124\ube44 \uc601\ud5a5, \uc6b4\uc804 \ub9ac\uc2a4\ud06c\uae4c\uc9c0 \ub2e4\uac01\uc801\uc73c\ub85c \uc5f0\uacb0\ud558\uc5ec \uc2ec\ud654\uc2dc\ud0a4\uc138\uc694.<\/li>\n\n\n\n<li>\uc124\uacc4 \uc5ec\uc720\uc728(SF) \uc801\uc6a9 \uc2dc, \ubc38\ube0c\uc758 \uae30\ubc00 \ub4f1\uae09(Class IV~VI)\uc5d0 \ub530\ub978 \uc2dc\ud2b8 \ub85c\ub4dc \ubcc0\ud654\ub97c \ub354 \uc0c1\uc138\ud788 \uc5b8\uae09\ud558\uba74 \uc644\ubcbd\ud568.<\/li>\n\n\n\n<li>\ubaa8\ub4e0 \ubb38\uc81c \uc720\ud615\uc5d0\uc11c \ud604\uc7a5 \uc801\uc6a9\uc131, \ubb38\uc81c \ud574\uacb0, \uc81c\uc5b8, \uae30\uc220\uc0ac\uc801 \ud310\ub2e8\uc131\uc744 \ubc18\ub4dc\uc2dc \uc5f0\uacb0\ud558\uc5ec \ub2f5\uc548\uc744 \uc644\uc131\ud558\uc138\uc694.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">[\uc694\uad6c\uc0ac\ud56d \ucda9\uc871\ub3c4]<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ubb38\uc81c \uc720\ud615 lens: \uc6d0\ub9ac\u00b7\ud574\uc11d\ud615(PRINCIPLE_INTERPRETATION)<\/li>\n\n\n\n<li>\uc804\uccb4 \ud310\uc815: strong<\/li>\n\n\n\n<li>\uc694\uad6c\uc0ac\ud56d \ucda9\uc871\ub960: 100.0% (\uac00\uc911 7\/7)<\/li>\n\n\n\n<li>\uc0c1\ud0dc: \ucda9\uc871 7 \u00b7 \ubd80\ubd84 0 \u00b7 \uc624\ub2f5 0 \u00b7 \ub204\ub77d 0<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\uacf5\uc555\uc2dd \uad6c\ub3d9\uae30 \uc120\uc815 \uc2dc \uace0\ub824\ud574\uc57c \ud560 \ubc38\ube0c\uc758 \ubd88\ud3c9\ud615\ub825\uacfc \ub9c8\ucc30\ub825\uc758 \uac1c\ub150\uc744 \uc124\uba85\ud558\uace0, Fail-Safe \ub3d9\uc791 \uad6c\ud604\uc744 \uc704\ud55c \uc2a4\ud504\ub9c1 \uc124\uacc4 \uae30\uc900\uc744 \uc124\uba85\ud558\uc2dc\uc624 [\ub2f5\uc548] [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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