{"id":706157,"date":"2024-11-13T18:14:15","date_gmt":"2024-11-13T17:14:15","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=706157"},"modified":"2024-11-13T18:14:15","modified_gmt":"2024-11-13T17:14:15","slug":"lo-cong-nghiep-kiem-soat-nhiet-do-thiet-ke","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/lo-cong-nghiep-kiem-soat-nhiet-do-thiet-ke\/","title":{"rendered":"L\u00f2 C\u00f4ng Nghi\u1ec7p | Ki\u1ec3m So\u00e1t Nhi\u1ec7t \u0110\u1ed9, Thi\u1ebft K\u1ebf"},"content":{"rendered":"<p class=\"sidekick\">L\u00f2 C\u00f4ng Nghi\u1ec7p: Ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 v\u00e0 thi\u1ebft k\u1ebf t\u1ed1i \u01b0u. H\u01b0\u1edbng d\u1eabn c\u01a1 b\u1ea3n v\u1ec1 c\u00e1ch ho\u1ea1t \u0111\u1ed9ng, l\u1ee3i \u00edch v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a c\u00e1c l\u00f2 c\u00f4ng nghi\u1ec7p hi\u1ec7n \u0111\u1ea1i.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/lo_cong_nghiep_kiem_soat_nhiet_do_thiet_ke.png\" alt=\"L\u00f2 C\u00f4ng Nghi\u1ec7p | Ki\u1ec3m So\u00e1t Nhi\u1ec7t \u0110\u1ed9, Thi\u1ebft K\u1ebf\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>L\u00f2 C\u00f4ng Nghi\u1ec7p | Ki\u1ec3m So\u00e1t Nhi\u1ec7t \u0110\u1ed9, Thi\u1ebft K\u1ebf<\/h2>\n<p>L\u00f2 c\u00f4ng nghi\u1ec7p l\u00e0 thi\u1ebft b\u1ecb quan tr\u1ecdng trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p, t\u1eeb s\u1ea3n xu\u1ea5t th\u00e9p, xi m\u0103ng \u0111\u1ebfn ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m. M\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng trong vi\u1ec7c s\u1eed d\u1ee5ng l\u00f2 c\u00f4ng nghi\u1ec7p hi\u1ec7u qu\u1ea3 l\u00e0 kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 thi\u1ebft k\u1ebf ph\u00f9 h\u1ee3p v\u1edbi m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng.<\/p>\n<h2>Ki\u1ec3m So\u00e1t Nhi\u1ec7t \u0110\u1ed9<\/h2>\n<p>Ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 trong l\u00f2 c\u00f4ng nghi\u1ec7p l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m v\u00e0 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 ph\u1ed5 bi\u1ebfn:<\/p>\n<ul>\n<li><b>\u0110i\u1ec1u khi\u1ec3n PID:<\/b> Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y s\u1eed d\u1ee5ng ba th\u00f4ng s\u1ed1: Proportional (P), Integral (I), v\u00e0 Derivative (D) \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh nhi\u1ec7t \u0111\u1ed9. C\u00f4ng th\u1ee9c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0:\n<pre>\n    u(t) = K_p e(t) + K_i \\int e(t) dt + K_d \\frac{de(t)}{dt}\n    <\/pre>\n<\/li>\n<li><b>C\u1ea3m bi\u1ebfn nhi\u1ec7t \u0111\u1ed9:<\/b> S\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i c\u1ea3m bi\u1ebfn nh\u01b0 thermocouple, RTD \u0111\u1ec3 \u0111o nhi\u1ec7t \u0111\u1ed9 th\u1ef1c t\u1ebf trong l\u00f2. D\u1eef li\u1ec7u t\u1eeb c\u1ea3m bi\u1ebfn n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh nhi\u1ec7t \u0111\u1ed9.<\/li>\n<li><b>H\u1ec7 th\u1ed1ng \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed:<\/b> \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 duy tr\u00ec nhi\u1ec7t \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh trong l\u00f2 b\u1eb1ng c\u00e1ch ki\u1ec3m so\u00e1t l\u01b0\u1ee3ng kh\u00ed v\u00e0o v\u00e0 ra.<\/li>\n<\/ul>\n<h2>Thi\u1ebft K\u1ebf L\u00f2 C\u00f4ng Nghi\u1ec7p<\/h2>\n<p>Thi\u1ebft k\u1ebf l\u00f2 c\u00f4ng nghi\u1ec7p c\u1ea7n ph\u1ea3i xem x\u00e9t nhi\u1ec1u y\u1ebfu t\u1ed1 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u qu\u1ea3 v\u00e0 an to\u00e0n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 quan tr\u1ecdng:<\/p>\n<ol>\n<li><b>V\u1eadt li\u1ec7u:<\/b> L\u00f2 c\u1ea7n \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb v\u1eadt li\u1ec7u ch\u1ecbu nhi\u1ec7t t\u1ed1t nh\u01b0 g\u1ea1ch ch\u1ecbu l\u1eeda, th\u00e9p kh\u00f4ng g\u1ec9 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o tu\u1ed5i th\u1ecd v\u00e0 an to\u00e0n khi v\u1eadn h\u00e0nh \u1edf nhi\u1ec7t \u0111\u1ed9 cao.<\/li>\n<li><b>C\u1ea5u tr\u00fac:<\/b> C\u1ea5u tr\u00fac c\u1ee7a l\u00f2 ph\u1ea3i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf sao cho nhi\u1ec7t \u0111\u1ed9 \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed1 \u0111\u1ec1u, gi\u1ea3m thi\u1ec3u t\u00ecnh tr\u1ea1ng &#8220;\u0111i\u1ec3m n\u00f3ng&#8221; v\u00e0 &#8220;\u0111i\u1ec3m l\u1ea1nh&#8221; trong l\u00f2.<\/li>\n<li><b>C\u00e1ch nhi\u1ec7t:<\/b> S\u1eed d\u1ee5ng c\u00e1c l\u1edbp c\u00e1ch nhi\u1ec7t \u0111\u1ec3 gi\u1ea3m m\u1ea5t nhi\u1ec7t v\u00e0 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng. C\u00e1c v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t ph\u1ed5 bi\u1ebfn bao g\u1ed3m b\u00f4ng g\u1ed1m (ceramic fiber), vermiculite v\u00e0 c\u00e1c lo\u1ea1i g\u1ea1ch c\u00e1ch nhi\u1ec7t.<\/li>\n<li><b>H\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n:<\/b> T\u00edch h\u1ee3p h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n t\u1ef1 \u0111\u1ed9ng \u0111\u1ec3 d\u1ec5 d\u00e0ng \u0111i\u1ec1u ch\u1ec9nh nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh. C\u00e1c h\u1ec7 th\u1ed1ng PLC (Programmable Logic Controller) v\u00e0 HMI (Human Machine Interface) th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 gi\u00e1m s\u00e1t v\u00e0 \u0111i\u1ec1u khi\u1ec3n l\u00f2.<\/li>\n<\/ol>\n<p>V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n kh\u00f4ng ng\u1eebng c\u1ee7a c\u00f4ng ngh\u1ec7, l\u00f2 c\u00f4ng nghi\u1ec7p ng\u00e0y c\u00e0ng tr\u1edf n\u00ean hi\u1ec7u qu\u1ea3 v\u00e0 th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng h\u01a1n. Vi\u1ec7c hi\u1ec3u r\u00f5 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng v\u00e0 thi\u1ebft k\u1ebf c\u1ee7a l\u00f2 c\u00f4ng nghi\u1ec7p gi\u00fap cho c\u00e1c nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t \u0111\u1ea1t \u0111\u01b0\u1ee3c n\u0103ng su\u1ea5t cao v\u00e0 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>L\u00f2 C\u00f4ng Nghi\u1ec7p: Ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 v\u00e0 thi\u1ebft k\u1ebf t\u1ed1i \u01b0u. H\u01b0\u1edbng d\u1eabn c\u01a1 b\u1ea3n v\u1ec1 c\u00e1ch ho\u1ea1t \u0111\u1ed9ng, l\u1ee3i \u00edch v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a c\u00e1c l\u00f2 c\u00f4ng nghi\u1ec7p hi\u1ec7n \u0111\u1ea1i.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[132],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>L\u00f2 C\u00f4ng Nghi\u1ec7p | Ki\u1ec3m So\u00e1t Nhi\u1ec7t \u0110\u1ed9, Thi\u1ebft K\u1ebf<\/title>\n<meta name=\"description\" content=\"L\u00f2 C\u00f4ng Nghi\u1ec7p: Ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 v\u00e0 thi\u1ebft k\u1ebf t\u1ed1i \u01b0u. 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