{"id":17447,"date":"2014-08-08T16:04:08","date_gmt":"2014-08-08T09:04:08","guid":{"rendered":"https:\/\/banbientan.com\/?p=17447"},"modified":"2014-08-08T16:04:08","modified_gmt":"2014-08-08T09:04:08","slug":"tiet-kiem-dien-cho-may-nen-khi-co-su-dung-bien-tan","status":"publish","type":"post","link":"https:\/\/hunglong.banbientan.com\/?p=17447","title":{"rendered":"Ti\u1ebft ki\u1ec7m \u0111i\u1ec7n cho m\u00e1y n\u00e9n kh\u00ed c\u00f3 s\u1eed d\u1ee5ng bi\u1ebfn t\u1ea7n"},"content":{"rendered":"

Ph\u00e2n t\u00edch t\u00edch ki\u1ec7m \u0111i\u1ec7n trong M\u00e1y N\u00e9n Kh\u00ed –\u00a0Trong m\u1ecdi tr\u01b0\u1eddng h\u1ee3p s\u1ef1 ho\u1ea1t \u0111\u1ed9ng l\u00e0 li\u00ean t\u1ee5c v\u00e0 \u0111\u1ed9ng c\u01a1 c\u1ee7a m\u00e1y n\u00e9n kh\u00ed kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 \u0111i\u1ec1u ch\u1ec9nh t\u1ed1c \u0111\u1ed9, do \u0111\u00f3 s\u1ef1 thay \u0111\u1ed5i \u00e1p su\u1ea5t v\u00e0 l\u01b0u l\u01b0\u1ee3ng kh\u00f4ng \u0111\u01b0\u1ee3c d\u00f9ng tr\u1ef1c ti\u1ebfp \u0111\u1ec3 gi\u1ea3m t\u1ed1c \u0111\u1ed9 v\u00e0 \u0111i\u1ec1u ch\u1ec9nh c\u00f4ng su\u1ea5t \u0111\u1ea7u ra cho ph\u00f9 h\u1ee3p, v\u00e0 motor kh\u00f4ng cho ph\u00e9p kh\u1edfi \u0111\u1ed9ng …<\/h2>\n

\"nen<\/a><\/p>\n

\n

PH\u00c2N T\u00cdCH TI\u1ebeT KI\u1ec6M \u0110I\u1ec6N TRONG\u00a0M\u00c1Y N\u00c9N KH\u00cd<\/strong><\/p>\n<\/div>\n

\nTrong h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng cung c\u1ea5p kh\u00ed, \u0111\u1ed1i t\u01b0\u1ee3ng \u0111i\u1ec1u khi\u1ec3n c\u01a1 b\u1ea3n nh\u1ea5t l\u00e0 l\u01b0u l\u01b0\u1ee3ng. Nhi\u1ec7m v\u1ee5 c\u01a1 b\u1ea3n nh\u1ea5t c\u1ee7a h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng cung c\u1ea5p kh\u00ed n\u00e9n l\u00e0 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u1ec1 l\u01b0u l\u01b0\u1ee3ng. Hi\u1ec7n t\u1ea1i c\u00f3 hai ch\u1ebf \u0111\u1ed9 \u0111i\u1ec1u khi\u1ec3n l\u01b0u l\u01b0\u1ee3ng kh\u00ed: ch\u1ebf \u0111\u1ed9 \u0111i\u1ec1u khi\u1ec3n cung c\u1ea5p kh\u00ed l\u00fac c\u00f3 t\u1ea3i\/ kh\u00f4ng\u00a0 t\u1ea3i v\u00e0 ch\u1ebf \u0111\u1ed9 \u0111i\u1ec1u khi\u1ec3n t\u1ed1c \u0111\u1ed9.
\nCh\u1ebf \u0111\u1ed9 \u0111i\u1ec1u khi\u1ec3n cung c\u1ea5p kh\u00ed c\u00f3 t\u1ea3i\/ kh\u00f4ng t\u1ea3i<\/strong><\/p>\n

Ch\u1ebf \u0111\u1ed9 n\u00e0y \u0111\u1ec1 c\u1eadp \u0111\u1ebfn vi\u1ec7c ki\u1ec3m so\u00e1t kh\u00f4ng kh\u00ed \u0111\u1ea7u v\u00e0o qua van c\u1eeda v\u00e0o. C\u00f3 ngh\u0129a l\u00e0 khi \u00e1p su\u1ea5t \u0111\u1ea1t \u0111\u1ebfn gi\u1edbi h\u1ea1n tr\u00ean,\u00a0van c\u1eeda v\u00e0o s\u1ebd \u0111\u00f3ng v\u00e0 m\u00e1y n\u00e9n s\u1ebd \u0111i v\u00e0o tr\u1ea1ng th\u00e1i ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng t\u1ea3i, khi \u00e1p su\u1ea5t \u0111\u1ea1t d\u01b0\u1edbi h\u1ea1n d\u01b0\u1edbi, van c\u1eeda v\u00e0o s\u1ebd m\u1edf v\u00e0 m\u00e1y n\u00e9n s\u1ebd \u0111i v\u00e0o tr\u1ea1ng th\u00e1i ho\u1ea1t \u0111\u1ed9ng c\u00f3 t\u1ea3i.<\/p>\n

M\u00e1y n\u00e9n kh\u00ed kh\u00f4ng cho ph\u00e9p t\u00ecnh tr\u1ea1ng ho\u1ea1t \u0111\u1ed9ng c\u00f3 t\u1ea3i trong th\u1eddi gian d\u00e0i, c\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c c\u1ee7a motor \u0111\u01b0\u1ee3c ch\u1ecdn theo nhu c\u1ea7u th\u1ef1c t\u1ebf l\u1edbn nh\u1ea5t v\u00e0 th\u00f4ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf d\u01b0 t\u1ea3i. C\u00e1c thi\u1ebft b\u1ecb kh\u1edfi \u0111\u1ed9ng ch\u1ecbu s\u1ef1 hao m\u00f2n l\u1edbn v\u00e0 \u0111\u00f3 l\u00e0 nguy\u00ean nh\u00e2n l\u00e0m cho tu\u1ed5i th\u1ecd motor gi\u1ea3m, do \u0111\u00f3 s\u1ebd n\u1eb7ng v\u1ec1 c\u00f4ng vi\u1ec7c b\u1ea3o tr\u00ec. M\u1eb7c d\u00f9 ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3m \u0111i\u1ec7n \u00e1p \u0111\u00e3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng, d\u00f2ng kh\u1edfi \u0111\u1ed9ng v\u1eabn c\u00f2n r\u1ea5t l\u1edbn, n\u00f3 c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 \u1ed5n \u0111\u1ecbnh c\u1ee7a l\u01b0\u1edbi \u0111i\u1ec7n v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 ho\u1ea1t \u0111\u1ed9ng an to\u00e0n c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb ti\u00eau th\u1ee5 \u0111i\u1ec7n kh\u00e1c. H\u01a1n n\u1eefa, trong m\u1ecdi tr\u01b0\u1eddng h\u1ee3p s\u1ef1 ho\u1ea1t \u0111\u1ed9ng l\u00e0 li\u00ean t\u1ee5c v\u00e0 \u0111\u1ed9ng c\u01a1 c\u1ee7a m\u00e1y n\u00e9n kh\u00ed kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 \u0111i\u1ec1u ch\u1ec9nh t\u1ed1c \u0111\u1ed9, do \u0111\u00f3 s\u1ef1 thay \u0111\u1ed5i \u00e1p su\u1ea5t v\u00e0 l\u01b0u l\u01b0\u1ee3ng kh\u00f4ng \u0111\u01b0\u1ee3c d\u00f9ng tr\u1ef1c ti\u1ebfp \u0111\u1ec3 gi\u1ea3m t\u1ed1c \u0111\u1ed9 v\u00e0 \u0111i\u1ec1u ch\u1ec9nh c\u00f4ng su\u1ea5t \u0111\u1ea7u ra cho ph\u00f9 h\u1ee3p, v\u00e0 motor kh\u00f4ng cho ph\u00e9p kh\u1edfi \u0111\u1ed9ng th\u01b0\u1eddng xuy\u00ean, \u0111\u00f3 l\u00e0 nguy\u00ean nh\u00e2n l\u00e0m cho motor v\u1eabn c\u00f2n ch\u1ea1y kh\u00f4ng t\u1ea3i trong khi l\u01b0\u1ee3ng kh\u00ed ti\u00eau th\u1ee5 r\u1ea5t nh\u1ecf, l\u00e0m ti\u00eau t\u1ed1n m\u1ed9t l\u01b0\u1ee3ng l\u1edbn \u0111i\u1ec7n n\u0103ng.<\/p>\n

Ch\u1ebf \u0111\u1ed9 c\u00f3 t\u1ea3i\/kh\u00f4ng t\u1ea3i th\u01b0\u1eddng xuy\u00ean l\u00e0 nguy\u00ean nh\u00e2n thay \u0111\u1ed5i \u00e1p su\u1ea5t trong to\u00e0n b\u1ed9 \u0111\u01b0\u1eddng \u1ed1ng, v\u00e0 \u00e1p su\u1ea5t l\u00e0m vi\u1ec7c kh\u00f4ng \u1ed5n \u0111\u1ecbnh s\u1ebd gi\u1ea3m tu\u1ed5i th\u1ecd c\u1ee7a m\u00e1y n\u00e9n kh\u00ed. M\u1eb7c d\u00f9 \u0111\u00e3 c\u00f3 m\u1ed9t v\u00e0i \u0111i\u1ec1u ch\u1ec9nh cho m\u00e1y n\u00e9n kh\u00ed (ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111i\u1ec1u ch\u1ec9nh van, \u0111i\u1ec1u ch\u1ec9nh t\u1ea3i) ngay c\u1ea3 trong tr\u01b0\u1eddng h\u1ee3p l\u01b0u l\u01b0\u1ee3ng \u00edt, l\u01b0\u1ee3ng \u0111i\u1ec7n ti\u00eau th\u1ee5 gi\u1ea3m xu\u1ed1ng c\u0169ng kh\u00f4ng \u0111\u00e1ng k\u1ec3 do motor quay li\u00ean t\u1ee5c.<\/p>\n

Ch\u1ebf \u0111\u1ed9 \u0111i\u1ec1u khi\u1ec3n t\u1ed1c \u0111\u1ed9 quay motor<\/strong><\/p>\n

\u0110i\u1ec1u ch\u1ec9nh l\u01b0u l\u01b0\u1ee3ng b\u1eb1ng c\u00e1ch thay \u0111\u1ed5i t\u1ed1c \u0111\u1ed9 quay c\u1ee7a m\u00e1y n\u00e9n kh\u00ed, trong khi v\u1eabn gi\u1eef cho van m\u1edf kh\u00f4ng thay \u0111\u1ed5i (th\u01b0\u1eddng l\u00e0 duy tr\u00ec m\u1edf t\u1ed1i \u0111a). Khi t\u1ed1c \u0111\u1ed9 quay c\u1ee7a m\u00e1y n\u00e9n kh\u00ed thay \u0111\u1ed5i, c\u00e1c \u0111\u1eb7c t\u00ednh kh\u00e1c c\u0169ng thay \u0111\u1ed5i c\u00f9ng v\u1edbi h\u1ec7 th\u1ed1ng n\u00e9n kh\u00ed, trong khi l\u1ef1c c\u1ea3n \u0111\u01b0\u1eddng \u1ed1ng kh\u00f4ng \u0111\u1ed5i.<\/p>\n

V\u1edbi ch\u1ebf \u0111\u1ed9 \u0111i\u1ec1u khi\u1ec3n nh\u01b0 v\u1eady, c\u00f4ng ngh\u1ec7 thay \u0111\u1ed5i t\u1ea7n s\u1ed1 \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 thay \u0111\u1ed5i t\u1ed1c \u0111\u1ed9 quay motor c\u1ee7a m\u00e1y n\u00e9n kh\u00ed v\u00e0 m\u00e1y n\u00e9n kh\u00ed s\u1ebd thay \u0111\u1ed5i l\u01b0u l\u01b0\u1ee3ng theo nhu c\u1ea7u ti\u00eau th\u1ee5 th\u1ef1c t\u1ebf. Nh\u01b0 v\u1eady, h\u1ec7 th\u1ed1ng cung c\u1ea5p kh\u00ed c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 cao nh\u1ea5t \u0111\u1ed3ng th\u1eddi ti\u1ebft ki\u1ec7m \u0111i\u1ec7n. Nguy\u00ean t\u1eafc c\u01a1 b\u1ea3n c\u1ee7a\u00a0bi\u1ebfn t\u1ea7n\u00a0l\u00e0 s\u1ef1 chuy\u1ec3n \u0111\u1ed5i \u0111i\u1ec7n AC-DC-AC v\u00e0 c\u00f3 th\u1ec3 cho ra \u0111i\u1ec7n \u00e1p c\u00f3 t\u1ea7n s\u1ed1 thay \u0111\u1ed5i theo y\u00eau c\u1ea7u c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. T\u1ed1c \u0111\u1ed9 quay c\u1ee7a motor l\u00e0 t\u1ec9 l\u1ec7 tuy\u1ebfn t\u00ednh v\u1edbi t\u1ea7n s\u1ed1, do \u0111\u00f3 \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u \u1edf ng\u00f5 ra v\u1edbi t\u1ea7n s\u1ed1 \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c b\u1edfi\u00a0bi\u1ebfn t\u1ea7n\u00a0c\u00f3 th\u1ec3 \u0111\u00e1p \u1ee9ng cho \u0111i\u1ec7n \u00e1p motor c\u1ee7a m\u00e1y n\u00e9n kh\u00ed, do \u0111\u00f3 ti\u1ec7n l\u1ee3i cho vi\u1ec7c thay \u0111\u1ed5i t\u1ed1c \u0111\u1ed9 quay c\u1ee7a m\u00e1y n\u00e9n kh\u00ed.<\/p>\n

\u00a0Nguy\u00ean l\u00fd ti\u1ebft ki\u1ec7m \u0111i\u1ec7n c\u1ee7a vi\u1ec7c cung c\u1ea5p kh\u00ed v\u1edbi \u00e1p su\u1ea5t kh\u00f4ng \u0111\u1ed5i:<\/strong>
\nNh\u01b0 \u0111\u00e3 n\u00f3i \u1edf tr\u00ean, l\u01b0u l\u01b0\u1ee3ng l\u00e0 \u0111\u1ed1i t\u01b0\u1ee3ng \u0111i\u1ec1u khi\u1ec3n c\u01a1 b\u1ea3n c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng cung c\u1ea5p kh\u00ed. L\u01b0u l\u01b0\u1ee3ng kh\u00ed c\u1ea7n thi\u1ebft ph\u1ea3i \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c l\u01b0u l\u01b0\u1ee3ng ti\u00eau th\u1ee5 kh\u00ed b\u1ea5t c\u1ee9 l\u00fac n\u00e0o. Trong m\u1ed9t h\u1ec7 th\u1ed1ng cung\u00a0c\u1ea5p kh\u00ed, \u00e1p su\u1ea5t trong \u0111\u01b0\u1eddng \u1ed1ng d\u1ef1 tr\u1eef c\u00f3 th\u1ec3 ch\u1ec9 ra m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00f4ng su\u1ea5t cung c\u1ea5p v\u00e0 nhu c\u1ea7u ti\u00eau th\u1ee5 kh\u00ed.
\nN\u1ebfu l\u01b0u l\u01b0\u1ee3ng cung c\u1ea5p > l\u01b0u l\u01b0\u1ee3ng ti\u00eau th\u1ee5 l\u00e0m \u00e1p su\u1ea5t b\u00ean trong \u0111\u01b0\u1eddng \u1ed1ng s\u1ebd t\u0103ng l\u00ean.
\nN\u1ebfu l\u01b0u l\u01b0\u1ee3ng cung c\u1ea5p < l\u01b0u l\u01b0\u1ee3ng ti\u00eau th\u1ee5 l\u00e0m \u00e1p su\u1ea5t b\u00ean trong \u0111\u01b0\u1eddng \u1ed1ng s\u1ebd gi\u1ea3m xu\u1ed1ng.
\nN\u1ebfu l\u01b0u l\u01b0\u1ee3ng cung c\u1ea5p = l\u01b0u l\u01b0\u1ee3ng ti\u00eau th\u1ee5\u00a0l\u00e0m \u00e1p su\u1ea5t b\u00ean trong \u0111\u01b0\u1eddng \u1ed1ng s\u1ebd gi\u1eef nguy\u00ean kh\u00f4ng thay \u0111\u1ed5i.
\nDo \u0111\u00f3, n\u1ebfu \u00e1p su\u1ea5t trong \u0111\u01b0\u1eddng \u1ed1ng l\u00e0 kh\u00f4ng \u0111\u1ed5i, l\u01b0\u1ee3ng cung c\u1ea5p kh\u00ed ch\u1ec9 c\u1ea7n \u0111\u00e1p \u1ee9ng \u0111\u1ee7 l\u01b0\u1ee3ng kh\u00ed ti\u00eau d\u00f9ng. \u0110\u00e2y l\u00e0 m\u1ee5c \u0111\u00edch c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng cung c\u1ea5p kh\u00ed v\u1edbi \u00e1p su\u1ea5t kh\u00f4ng \u0111\u1ed5i.<\/p>\n

\"nen<\/p>\n

H\u1ec7 th\u1ed1ng VVF xem \u00e1p su\u1ea5t \u0111\u01b0\u1eddng \u1ed1ng nh\u01b0 l\u00e0 m\u1ed9t \u0111\u1ed1 t\u01b0\u1ee3ng \u0111i\u1ec1u khi\u1ec3n. m\u1ed9t c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t \u1edf c\u1eeda ra c\u1ee7a \u0111\u01b0\u1eddng \u1ed1ng s\u1ebd chuy\u1ec3n \u00e1p su\u1ea5t c\u1ee7a b\u00ecnh ch\u1ee9a th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n, g\u1eedi t\u00edn hi\u1ec7u \u0111\u1ebfn h\u1ec7 th\u1ed1ng \u0111i\u1ec1u ch\u1ec9nh PID, so s\u00e1nh n\u00f3 v\u1edbi \u00e1p su\u1ea5t \u0111\u1eb7t, ti\u1ebfn h\u00e0nh t\u00ednh to\u00e1n theo ki\u1ec3u \u0111i\u1ec1u khi\u1ec3n PID c\u0103n c\u1ee9 theo \u0111\u1ed9 l\u1edbn c\u1ee7a s\u1ef1 sai l\u1ec7ch, ph\u00e1t ra m\u1ed9t t\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n \u0111i\u1ec7n \u00e1p ng\u00f5 ra v\u00e0 t\u1ea7n s\u1ed1 c\u1ee7a bi\u1ebfn t\u1ea7n, \u0111i\u1ec1u ch\u1ec9nh t\u1ed1c \u0111\u1ed9 quay c\u1ee7a motor, nh\u01b0 v\u1eady \u00e1p su\u1ea5t th\u1ef1c s\u1ef1 \u0111\u01b0\u1ee3c gi\u1eef kh\u00f4ng \u0111\u1ed5i v\u00e0 gi\u1eef c\u1ed1 \u0111\u1ecbnh trong to\u00e0n th\u1eddi gian. Th\u00eam v\u00e0o \u0111\u00f3, khi s\u1eed d\u1ee5ng gi\u1ea3i ph\u00e1p n\u00e0y, bi\u1ebfn t\u1ea7n c\u00f3 th\u1ec3 kh\u1ee3i \u0111\u1ed9ng m\u1ec1m cho motor c\u1ee7a m\u00e1y n\u00e9n kh\u00ed t\u1eeb l\u00fac \u0111\u1ee9ng y\u00ean cho \u0111\u1ebfn l\u00fac t\u1ed1c \u0111\u1ed9 quay \u1ed5n \u0111\u1ecbnh, ng\u0103n ng\u1eeba s\u1ef1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a d\u00f2ng \u0111i\u1ec7n l\u1edbn trong l\u00fac m\u00e1y n\u00e9n kh\u00ed kh\u1edfi \u0111\u1ed9ng. \u1ede \u0111i\u1ec1u ki\u1ec7n b\u00ecnh th\u01b0\u1eddng, m\u00e1y n\u00e9n kh\u00ed ho\u1ea1t \u0111\u1ed9ng theo ch\u1ebf \u0111\u1ed9 \u0111i\u1ec1u khi\u1ec3n VVF. \u0110\u1ed9t nhi\u00ean bi\u1ebfn t\u1ea7n b\u1ecb l\u1ed7i, qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t kh\u00f4ng cho ph\u00e9p s\u1ef1 tr\u00ec ho\u00e3n c\u1ee7a m\u00e1y n\u00e9n kh\u00ed, v\u00ec v\u1eady h\u1ec7 th\u1ed1ng c\u01a1 c\u1ea5u ch\u1ee9c n\u0103ng chuy\u1ec3n \u0111\u1ed5i gi\u1eefa ngu\u1ed3n \u0111i\u1ec7n l\u01b0\u1edbi v\u00e0 bi\u1ebfn t\u1ea7n. Theo c\u00e1ch n\u00e0y, khi bi\u1ebfn t\u1ea7n b\u1ecb l\u1ed7i, ngu\u1ed3n \u0111i\u1ec7n l\u01b0\u1edbi c\u00f3 th\u1ec3 l\u1eadp t\u1ee9c cung c\u1ea5p ngu\u1ed3n th\u00f4ng qua contactor, nh\u01b0 v\u1eady m\u00e1y n\u00e9n kh\u00ed c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng nh\u01b0 th\u01b0\u1eddng l\u1ec7.
\n 
\n\u00a0To\u00e0n b\u1ed9 qua tr\u00ecnh \u0111i\u1ec1u khi\u1ec3n nh\u01b0 sau:<\/strong>
\nNhu c\u1ea7u ti\u00eau th\u1ee5 kh\u00ed t\u0103ng l\u00ean\u00e0\u00a0\u00e1p su\u1ea5t tr\u00ean \u0111\u01b0\u1eddng \u1ed1ng gi\u1ea3m\u00e0\u00a0s\u1ef1 ch\u00eanh l\u1ec7ch gi\u1eefa \u00e1p su\u1ea5t c\u00e0i \u0111\u1eb7t v\u00e0 gi\u00e1 tr\u1ecb h\u1ed3i ti\u1ebfp t\u0103ng l\u00ean\u00e0\u00a0PID ng\u00f5 ra t\u0103ng l\u00ean\u00e0\u00a0t\u1ea7n s\u1ed1 ng\u00f5 ra c\u1ee7a bi\u1ebfn t\u1ea7n t\u0103ng l\u00ean\u00e0\u00a0t\u1ed1c \u0111\u1ed9 quay c\u1ee7a motor m\u00e1y n\u00e9n kh\u00ed t\u0103ng l\u00ean\u00e0\u00a0l\u01b0u l\u01b0\u1ee3ng kh\u00ed cung c\u1ea5p t\u0103ng l\u00ean\u00e0\u00a0\u00e1p su\u1ea5t \u0111\u01b0\u1eddng \u1ed1ng gi\u1eef \u1ed5n \u0111\u1ecbnh.
\n\"nen
\nXin l\u01b0u \u00fd r\u1eb1ng PID c\u1ee7a bien tan<\/strong><\/a>\u00a0kh\u00f4ng ki\u1ec3m so\u00e1t s\u1ef1 \u0111i\u1ec1u ch\u1ec9nh trong gi\u1edbi h\u1ea1n dung sai \u00e1p su\u1ea5t , t\u1ee9c l\u00e0 t\u1ea7n s\u1ed1 ng\u00f5 ra \u0111\u01b0\u1ee3c gi\u1eef kh\u00f4ng thay \u0111\u1ed5i.<\/span>
\n\"nen
\n\u1edf h\u00ecnh v\u1ebd tr\u00ean, \u201cngu\u1ed3n cung c\u1ea5p ch\u00ednh\u201d v\u00e0 \u201c<\/span>ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng\u201d \u0111\u01b0\u1ee3c contactor ch\u1ec9 \u0111\u1ecbnh l\u00e0 ngu\u1ed3n c\u1ea5p cho motor m\u00e1y n\u00e9n kh\u00ed. Nh\u01b0 v\u1eady, c\u00f3 hai t\u00f9y ch\u1ecdn ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng cho \u201cho\u1ea1t \u0111\u1ed9ng ngu\u1ed3n \u0111i\u1ec7n ch\u00ednh\u201d v\u00e0 \u201cho\u1ea1t \u0111\u1ed9ng ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng\u201d. \u1ede ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng ngu\u1ed3n \u0111i\u1ec7n ch\u00ednh, bi\u1ebfn t\u1ea7n<\/a>\u00a0<\/span><\/strong>kh\u00f4ng l\u00e0m vi\u1ec7c v\u00e0 to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng kh\u1edfi \u0111\u1ed9ng\/d\u1eebng b\u1eb1ng tay.v\u00e0 ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ea7n s\u1ed1 \u0111i\u1ec7n l\u01b0\u1edbi theo ph\u01b0\u01a1ng ph\u00e1p ban \u0111\u1ea7u. Trong khi \u1edf ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng, m\u00e1y n\u00e9n kh\u00ec \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n tr\u1ef1c ti\u1ebfp b\u1eb1ng bi\u1ebfn t\u1ea7n v\u00e0 h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng \u0111i\u1ec1u ch\u1ec9nh t\u1ed1c \u0111\u1ed9 quay motor m\u00e1y n\u00e9n kh\u00ed theo l\u01b0\u1ee3ng kh\u00ed ti\u00eau th\u1ee5, \u0111\u1ec3 c\u00e1c b\u1ed3n ch\u1ee9a duy tr\u00ec m\u1ed9t l\u01b0\u1ee3ng \u00e1p su\u1ea5t kh\u00f4ng.<\/span>\n<\/div>\n

<\/div>\n
\nNh\u1eefng \u0111\u1ec1 ph\u00f2ng khi ph\u1ed1i h\u1ee3p x\u00e2y d\u1ef1ng l\u1ea1i m\u00e1y n\u00e9n kh\u00ed c\u00f3 s\u1eed d\u1ee5ng bi\u1ebfn t\u1ea7n<\/strong><\/p>\n