{"id":3869,"date":"2019-03-08T09:06:02","date_gmt":"2019-03-08T02:06:02","guid":{"rendered":"http:\/\/mese.vn\/?p=3869"},"modified":"2019-03-08T09:08:41","modified_gmt":"2019-03-08T02:08:41","slug":"mcm-phuong-phap-theo-doi-tinh-trang-dong-co-dua-tren-mo-hinh-toan-hoc","status":"publish","type":"post","link":"https:\/\/tofu.isoinaction.com\/mesevn\/vi\/mcm-phuong-phap-theo-doi-tinh-trang-dong-co-dua-tren-mo-hinh-toan-hoc.html","title":{"rendered":"MCM: PH\u01af\u01a0NG PH\u00c1P THEO D\u00d5I T\u00ccNH TR\u1ea0NG \u0110\u1ed8NG C\u01a0 D\u1ef0A TR\u00caN M\u00d4 H\u00ccNH TO\u00c1N H\u1eccC"},"content":{"rendered":"<h2><strong>Kh\u00e1i qu\u00e1t<\/strong><\/h2>\n<p>B\u00e0i b\u00e1o n\u00e0y tr\u00ecnh b\u00e0y v\u1ec1 m\u1ed9t s\u1ea3n ph\u1ea9m\/gi\u1ea3i ph\u00e1p \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn v\u00e0 \u0111\u00e1nh gi\u00e1 cao: Gi\u1ea3i ph\u00e1p gi\u00e1m s\u00e1t t\u00ecnh tr\u1ea1ng \u0111\u1ed9ng c\u01a1 (MCM), \u0111\u1ec3 d\u1ef1 \u0111o\u00e1n b\u1ea3o d\u01b0\u1ee1ng h\u1ec7 th\u1ed1ng ba pha, bao g\u1ed3m \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n, m\u00e1y ph\u00e1t \u0111i\u1ec7n, m\u00e1y bi\u1ebfn th\u1ebf v\u00e0 c\u00e1c thi\u1ebft b\u1ecb ho\u1eb7c qu\u00e1 tr\u00ecnh \u0111\u01b0\u1ee3c v\u1eadn h\u00e0nh s\u1eed d\u1ee5ng \u0111\u1ed9ng c\u01a1. MCM l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ch\u1ec9 \u0111o \u0111i\u1ec7n \u00e1p v\u00e0 d\u00f2ng \u0111i\u1ec7n. N\u00f3 c\u00f3 kh\u1ea3 n\u0103ng l\u1eadp k\u1ebf ho\u1ea1ch b\u1ea3o tr\u00ec b\u1eb1ng c\u00e1ch ph\u00e1t hi\u1ec7n c\u00e1c s\u1ef1 c\u1ed1 c\u01a1 v\u00e0 \u0111i\u1ec7n s\u1eafp x\u1ea3y ra \u1edf giai \u0111o\u1ea1n \u0111\u1ea7u c\u1ee7a l\u1ed7i th\u00f4ng qua vi\u1ec7c gi\u00e1m s\u00e1t li\u00ean t\u1ee5c. MCM c\u0169ng cung c\u1ea5p cho ng\u01b0\u1eddi d\u00f9ng kh\u1ea3 n\u0103ng\u00a0 ch\u1ea9n \u0111o\u00e1n t\u00ecnh tr\u1ea1ng \u0111\u1ed9ng c\u01a1. Ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a MCM l\u00e0 cung c\u1ea5p c\u1ea3nh b\u00e1o s\u1edbm v\u1ec1 s\u1ef1 xu\u1ed1ng c\u1ea5p d\u1ea7n d\u1ea7n c\u1ee7a \u0111i\u1ec1u ki\u1ec7n m\u00e1y m\u00f3c v\u00e0 quy tr\u00ecnh \u0111\u1ec3 ng\u0103n ch\u1eb7n\/gi\u1ea3m thi\u1ec3u th\u1eddi gian \u0111\u00ecnh ho\u00e3n kh\u00f4ng theo k\u1ebf ho\u1ea1ch, v\u00e0 c\u1ea3i thi\u1ec7n n\u0103ng su\u1ea5t \u0111\u1ed9ng c\u01a1. C\u00e1c c\u00f4ng ngh\u1ec7 l\u00f5i MCM \u0111\u01b0\u1ee3c c\u1ea5p b\u1eb1ng s\u00e1ng ch\u1ebf b\u1eaft ngu\u1ed3n t\u1eeb n\u1ed7 l\u1ef1c nghi\u00ean c\u1ee9u k\u00e9o d\u00e0i h\u00e0ng th\u1eadp k\u1ef7, m\u00e0 tr\u01b0\u1edbc \u0111\u00e2y \u0111\u00e3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng t\u1ea1i Hoa K\u1ef3 cho \u0110\u1ed9ng c\u01a1 ch\u00ednh T\u00e0u con thoi, \u0111\u1ed9ng c\u01a1 m\u00e1y bay tr\u1ef1c th\u0103ng v\u00e0 tua-bin kh\u00ed. MCM l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb chi ph\u00ed th\u1ea5p, cung c\u1ea5p cho ng\u01b0\u1eddi d\u00f9ng th\u00f4ng tin h\u1ed7 tr\u1ee3 ra quy\u1ebft \u0111\u1ecbnh b\u1ea3o tr\u00ec ch\u00ednh x\u00e1c c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf m\u1ee9c th\u1ea5p ho\u1eb7c nh\u00e2n vi\u00ean b\u00e1n tay ngh\u1ec1. Do \u0111\u00f3, n\u00f3 gi\u00fap lo\u1ea1i b\u1ecf nh\u1eefng thi\u1ebfu s\u00f3t c\u1ee7a c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch d\u1ef1a tr\u00ean rung \u0111\u1ed9ng v\u00e0 d\u00f2ng \u0111i\u1ec7n \u0111\u1ed9ng c\u01a1.<\/p>\n<h2><strong>Gi\u1edbi thi\u1ec7u\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/strong><\/h2>\n<p>Trong m\u00f4i tr\u01b0\u1eddng kinh doanh nhi\u1ec1u c\u1ea1nh tranh v\u00e0 l\u1ee3i nhu\u1eadn th\u1ea5p ng\u00e0y nay, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t th\u01b0\u1eddng xuy\u00ean ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi nhu c\u1ea7u s\u1ea3n xu\u1ea5t ng\u00e0y c\u00e0ng t\u0103ng trong khi ph\u1ea3i li\u00ean t\u1ee5c c\u1eaft gi\u1ea3m chi ph\u00ed. M\u1ed9t chi ph\u00ed ph\u1ed5 bi\u1ebfn k\u00e9o gi\u1ea3m n\u0103ng su\u1ea5t l\u00e0 s\u1ef1 \u0111\u00ecnh ho\u00e3n ho\u1ea1t \u0111\u1ed9ng c\u1ee7a thi\u1ebft b\u1ecb v\u00e0 s\u1ea3n xu\u1ea5t kh\u00f4ng trong k\u1ebf ho\u1ea1ch [1]. H\u1ecfng h\u00f3c kh\u00f4ng l\u01b0\u1eddng tr\u01b0\u1edbc c\u1ee7a c\u00e1c quy tr\u00ecnh v\u00e0 m\u00e1y m\u00f3c trong m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p lu\u00f4n l\u00e0 \u0111i\u1ec1u kh\u00f4ng mong mu\u1ed1n. Khi c\u00e1c quy tr\u00ecnh n\u00e0y mang t\u00ednh tr\u1ecdng y\u1ebfu, ch\u00fang c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u1ed5n th\u1ea5t l\u1edbn trong s\u1ea3n xu\u1ea5t v\u00e0 chi ph\u00ed s\u1eeda ch\u1eefa t\u1ed1n k\u00e9m. Vi\u1ec7c theo d\u00f5i t\u00ecnh tr\u1ea1ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c c\u1ea3nh b\u00e1o s\u1edbm v\u1ec1 s\u1ef1 c\u1ed1 thi\u1ebft b\u1ecb s\u1eafp x\u1ea3y ra nh\u1eb1m ng\u0103n ch\u1eb7n v\u00e0 gi\u1ea3m thi\u1ec3u th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng t\u1ed1n k\u00e9m v\u00e0 thi\u1ec7t h\u1ea1i cho thi\u1ebft b\u1ecb qu\u00e1 tr\u00ecnh. \u00dd t\u01b0\u1edfng c\u01a1 b\u1ea3n \u0111\u1eb1ng sau gi\u00e1m s\u00e1t t\u00ecnh tr\u1ea1ng l\u00e0 ph\u00e2n t\u00edch d\u1eef li\u1ec7u t\u1eadp h\u1ee3p c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a thi\u1ebft b\u1ecb trong th\u1eddi gian \u0111\u1ee7 \u0111\u1ec3 gi\u1ea3m thi\u1ec3u c\u00e1c h\u1ecfng h\u00f3c c\u0169ng nh\u01b0 gi\u00e1n \u0111o\u1ea1n \u0111\u1ed9t xu\u1ea5t trong s\u1ea3n xu\u1ea5t. M\u1ed9t xu h\u01b0\u1edbng ng\u00e0y c\u00e0ng ph\u1ed5 bi\u1ebfn l\u00e0 s\u1ef1 t\u00edch h\u1ee3p c\u1ee7a gi\u00e1m s\u00e1t t\u00ecnh tr\u1ea1ng li\u00ean t\u1ee5c v\u1edbi kh\u1ea3 n\u0103ng b\u1ea3o tr\u00ec d\u1ef1 \u0111o\u00e1n \u0111\u1ec3 t\u1ef1 \u0111\u1ed9ng h\u00f3a h\u1ec7 th\u1ed1ng nh\u00e0 m\u00e1y.<\/p>\n<p>C\u00f3 hai ph\u1ea1m vi ch\u00ednh c\u1ee7a vi\u1ec7c gi\u00e1m s\u00e1t t\u00ecnh tr\u1ea1ng: rung v\u00e0 \u0103n m\u00f2n. Ph\u00e2n t\u00edch rung \u0111\u1ed9ng chi\u1ebfm t\u1ec9 l\u1ec7 l\u1edbn h\u01a1n (85%). C\u00e1c c\u00f4ng ngh\u1ec7 kh\u00e1c bao g\u1ed3m h\u1ed3ng ngo\u1ea1i (IR) nhi\u1ec7t k\u1ebf \u0111\u1ec3 ph\u00e1t hi\u1ec7n s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 trong v\u00f2ng bi v\u00e0 tr\u1ee5c; ph\u00e2n t\u00edch ma s\u00e1t ho\u1eb7c d\u1ea7u b\u00f4i tr\u01a1n trong m\u00e1y; ph\u00e2n t\u00edch si\u00eau \u00e2m c\u1ee7a v\u00f2ng bi&#8230;<\/p>\n<p>M\u1ed9t \u1ee9ng d\u1ee5ng ch\u00ednh c\u1ee7a gi\u00e1m s\u00e1t t\u00ecnh tr\u1ea1ng l\u00e0 theo d\u00f5i c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n v\u00e0 \u0111\u1ed9ng c\u01a1 nh\u01b0 m\u00e1y b\u01a1m, m\u00e1y n\u00e9n, qu\u1ea1t, m\u00e1y \u00e9p, vv. Nh\u1eefng thi\u1ebft b\u1ecb nh\u01b0 v\u1eady c\u00f3 m\u1eb7t kh\u1eafp n\u01a1i trong c\u00f4ng nghi\u1ec7p v\u1edbi ph\u1ea1m vi c\u00f4ng su\u1ea5t t\u1eeb v\u00e0i watt \u0111\u1ebfn v\u00e0i mega watts. Ph\u00e2n t\u00edch rung \u0111\u1ed9ng bao g\u1ed3m l\u1eafp c\u1ea3m bi\u1ebfn tr\u00ean \u0111\u1ed9ng c\u01a1 v\u00e0 \u0111o ph\u1ed5 n\u0103ng l\u01b0\u1ee3ng rung b\u1eb1ng m\u1ed9t thi\u1ebft b\u1ecb thu th\u1eadp v\u00e0 ph\u00e2n t\u00edch d\u1eef li\u1ec7u g\u1eafn ngo\u00e0i, th\u01b0\u1eddng l\u00e0 m\u00e1y t\u00ednh ho\u1eb7c thi\u1ebft b\u1ecb c\u1ea7m tay. Gia t\u1ed1c, v\u1eadn t\u1ed1c v\u00e0 chuy\u1ec3n v\u1ecb l\u00e0 m\u1ed9t s\u1ed1 c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c \u0111o ph\u1ed5 bi\u1ebfn nh\u1ea5t trong ph\u00e2n t\u00edch rung \u0111\u1ed9ng. C\u01a1 b\u1ea3n c\u1ee7a \u00fd t\u01b0\u1edfng l\u00e0 m\u1ed9t l\u1ed7i c\u01a1 h\u1ecdc ph\u00e1t tri\u1ec3n trong h\u1ec7 th\u1ed1ng s\u1ebd \u0111\u01b0\u1ee3c bi\u1ec3u hi\u1ec7n nh\u01b0 m\u1ed9t s\u1ef1 thay \u0111\u1ed5i trong n\u0103ng l\u01b0\u1ee3ng rung trong d\u1ea3i t\u1ea7n s\u1ed1 c\u1ee5 th\u1ec3. M\u1ed9t k\u1ef9 s\u01b0 \u0111\u01b0\u1ee3c \u0111\u00e0o t\u1ea1o c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n nh\u1eefng thay \u0111\u1ed5i n\u00e0y b\u1eb1ng c\u00e1ch gi\u00e1m s\u00e1t \u0111\u1ea7u ra t\u1eeb thi\u1ebft b\u1ecb. Trong tr\u01b0\u1eddng h\u1ee3p \u0111i\u1ec3n h\u00ecnh, d\u1eef li\u1ec7u thu \u0111\u01b0\u1ee3c \u0111\u1ecbnh k\u1ef3 trong m\u1ed9t kho\u1ea3ng th\u1eddi gian m\u1edf r\u1ed9ng (th\u01b0\u1eddng l\u00e0 m\u1ed9t n\u0103m ho\u1eb7c h\u01a1n) s\u1ebd \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n \u0111\u1ec3 quan s\u00e1t b\u1ea5t k\u1ef3 xu h\u01b0\u1edbng c\u00f3 th\u1ec3 n\u00e0o c\u1ee7a h\u1ecfng h\u00f3c. Vi\u1ec7c theo d\u00f5i t\u00ecnh tr\u1ea1ng d\u1ef1a tr\u00ean rung \u0111\u1ed9ng c\u00f3 th\u1ec3 t\u1ed1n k\u00e9m, kh\u00f3 s\u1eed d\u1ee5ng v\u00e0 do \u0111\u00f3 d\u1eabn \u0111\u1ebfn kh\u00f3 kh\u0103n trong di\u1ec5n gi\u1ea3i v\u00ec nh\u1eefng l\u00fd do sau:<\/p>\n<ul>\n<li>Gi\u00e1 c\u1ea3; c\u1ea3 c\u00e1c c\u1ea3m bi\u1ebfn v\u00e0 thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed li\u00ean quan c\u1ee7a ch\u00fang \u0111\u1ec1u \u0111\u1eaft ti\u1ec1n.<\/li>\n<li>S\u1ef1 d\u1ec5 d\u00e0ng c\u00e0i \u0111\u1eb7t; v\u1ecb tr\u00ed l\u1eafp c\u1ee7a gia t\u1ed1c k\u1ebf tr\u00ean \u0111\u1ed9ng c\u01a1 ph\u1ea3i \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn c\u1ea9n th\u1eadn \u0111\u1ec3 cho \u0111\u1ed9 nh\u1ea1y t\u1ed1i \u0111a. Ngo\u00e0i ra c\u1ea3m bi\u1ebfn g\u1eafn c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 trong tr\u01b0\u1eddng h\u1ee3p nh\u1eefng v\u1ecb tr\u00ed kh\u00f4ng th\u1ec3 ti\u1ebfp c\u1eadn.<\/li>\n<li>T\u00ednh d\u1ec5 s\u1eed d\u1ee5ng; thu th\u1eadp v\u00e0 ph\u00e2n t\u00edch d\u1eef li\u1ec7u t\u1ed1n th\u1eddi gian v\u00e0 vi\u1ec7c gi\u1ea3i th\u00edch d\u1eef li\u1ec7u \u0111\u00f2i h\u1ecfi k\u1ef9 n\u0103ng v\u00e0 \u0111\u00e0o t\u1ea1o<\/li>\n<li>\u0110\u1ed9 l\u1eb7p l\u1ea1i; d\u1eef li\u1ec7u thu \u0111\u01b0\u1ee3c \u0111\u1ec3 ph\u00e2n t\u00edch rung \u0111\u1ed9ng kh\u00f4ng l\u1eb7p l\u1ea1i. Ngo\u00e0i ra t\u00edn hi\u1ec7u rung n\u1ec1n c\u00f3 th\u1ec3 can thi\u1ec7p v\u00e0o t\u00edn hi\u1ec7u \u0111o<\/li>\n<li>Kh\u1ea3 n\u0103ng bao qu\u00e1t; ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch rung \u0111\u1ed9ng c\u00f3 th\u1ec3 hi\u1ec7u qu\u1ea3 trong vi\u1ec7c ph\u00e1t hi\u1ec7n c\u00e1c l\u1ed7i c\u01a1 h\u1ecdc, nh\u01b0ng kh\u00f4ng \u00e1p d\u1ee5ng cho ph\u1ea7n l\u1edbn c\u00e1c l\u1ed7i \u0111i\u1ec7n c\u1ee7a \u0111\u1ed9ng c\u01a1<\/li>\n<li>C\u1ea3nh b\u00e1o n\u00e2ng cao; c\u00e1c gi\u00e1 tr\u1ecb ng\u01b0\u1ee1ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi c\u00e1c \u0111i\u1ec1u ki\u1ec7n ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Trang thi\u1ebft b\u1ecb. Do \u0111\u00f3, h\u1ec7 th\u1ed1ng gi\u00e1m s\u00e1t rung \u0111\u1ed9ng li\u00ean t\u1ee5c s\u1eed d\u1ee5ng c\u00e1c gi\u00e1 tr\u1ecb ng\u01b0\u1ee1ng cao h\u01a1n c\u00f3 th\u1ec3 gi\u1ea3m th\u1eddi gian c\u1ea3nh b\u00e1o.<\/li>\n<li>T\u00edch h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng h\u00f3a nh\u00e0 m\u00e1y; ph\u1ea7n l\u1edbn c\u00e1c h\u1ec7 th\u1ed1ng rung \u0111\u1ed9ng l\u00e0 di \u0111\u1ed9ng v\u00e0 kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u00e0o c\u00e1c h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng h\u00f3a nh\u00e0 m\u00e1y.<\/li>\n<\/ul>\n<p>Ph\u00e2n t\u00edch rung \u0111\u1ed9ng l\u00e0 k\u1ef9 thu\u1eadt truy\u1ec1n th\u1ed1ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00f4ng nghi\u1ec7p. Tuy nhi\u00ean, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 chi ph\u00ed t\u01b0\u01a1ng \u0111\u1ed1i cao, n\u1ed5i ti\u1ebfng l\u00e0 kh\u00f3 s\u1eed d\u1ee5ng, \u0111\u00f2i h\u1ecfi chuy\u00ean m\u00f4n c\u1ea3 trong vi\u1ec7c thu th\u1eadp d\u1eef li\u1ec7u v\u00e0 di\u1ec5n gi\u1ea3i k\u1ebft qu\u1ea3 c\u1ee7a n\u00f3. Do \u0111\u00f3, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t ng\u00e0y c\u00e0ng c\u00f3 nhu c\u1ea7u l\u1edbn \u0111\u1ed1i v\u1edbi 1 c\u00f4ng ngh\u1ec7 v\u00e0 s\u1ea3n ph\u1ea9m kh\u00f4ng t\u1ed1n k\u00e9m, \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 s\u1eed d\u1ee5ng theo d\u00f5i t\u00ecnh tr\u1ea1ng, c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u00e0o h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng h\u00f3a nh\u00e0 m\u00e1y v\u1edbi kh\u1ea3 n\u0103ng l\u1eadp k\u1ebf ho\u1ea1ch b\u1ea3o tr\u00ec.<\/p>\n<p>M\u1ed9t ph\u01b0\u01a1ng ph\u00e1p m\u1edbi \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u \u0111\u1ec3 kh\u1eafc ph\u1ee5c m\u1ed9t s\u1ed1 thi\u1ebfu s\u00f3t c\u1ee7a c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch rung \u0111\u1ed9ng, c\u00f3 t\u00ean \u201cPh\u00e2n t\u00edch t\u00edn hi\u1ec7u d\u00f2ng \u0111i\u1ec7n\u201d. Trong ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, th\u00f4ng tin \u0111\u01b0\u1ee3c tr\u00edch xu\u1ea5t t\u1eeb d\u00f2ng \u0111i\u1ec7n cung c\u1ea5p cho \u0111\u1ed9ng c\u01a1. C\u00e1c ph\u01b0\u01a1ng sai trong khe h\u1edf c\u1ee7a stato-r\u00f4to \u0111\u01b0\u1ee3c ph\u1ea3n \u00e1nh trong d\u00f2ng \u0111i\u1ec7n \u0111\u1ed9ng c\u01a1 th\u00f4ng qua th\u00f4ng l\u01b0\u1ee3ng khe h\u1edf kh\u00f4ng kh\u00ed \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn l\u1ef1c \u0111i\u1ec7n \u0111\u1ed9ng. Do \u0111\u00f3 d\u00f2ng \u0111i\u1ec7n mang th\u00f4ng tin li\u00ean quan \u0111\u1ebfn c\u1ea3 l\u1ed7i c\u01a1 v\u00e0 \u0111i\u1ec7n. B\u1edfi v\u1eady l\u1ed7i s\u1ebd th\u1ec3 hi\u1ec7n m\u1ed9t s\u1ef1 thay \u0111\u1ed5i trong ph\u1ed5 t\u1ea7n s\u1ed1 c\u1ee7a d\u00f2ng \u0111i\u1ec7n trong t\u1ea7n s\u1ed1 c\u1ee5 th\u1ec3. D\u1ef1a tr\u00ean nguy\u00ean l\u00fd \u0111\u00f3 ch\u00fang ta c\u00f3 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111\u00e1nh gi\u00e1 v\u1ec1 l\u1ed7i c\u1ee7a \u0111\u1ed9ng c\u01a1 c\u1ea3m \u1ee9ng v\u00e0 t\u1ea7n s\u1ed1 c\u1ee5 th\u1ec3 m\u00e0 t\u1ea1i \u0111\u00f3 l\u1ed7i x\u1ea3y ra [2].<\/p>\n<p>Vi\u1ec7c thu th\u1eadp d\u1eef li\u1ec7u trong ph\u00e2n t\u00edch t\u00edn hi\u1ec7u d\u00f2ng \u0111i\u1ec7n kh\u00e1 \u0111\u01a1n gi\u1ea3n v\u00ec ch\u1ec9 c\u1ea7n \u0111o l\u01b0\u1eddng t\u00edn hi\u1ec7u \u0111i\u1ec7n. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u0169ng cung c\u1ea5p kh\u1ea3 n\u0103ng bao qu\u00e1t l\u1ed7i to\u00e0n di\u1ec7n; c\u1ea3 l\u1ed7i c\u01a1 h\u1ecdc c\u0169ng nh\u01b0 l\u1ed7i ph\u1ea7n \u0111i\u1ec7n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n. Tuy nhi\u00ean, vi\u1ec7c gi\u1ea3i th\u00edch d\u1eef li\u1ec7u \u0111\u00f2i h\u1ecfi chuy\u00ean gia c\u00f3 k\u1ef9 n\u0103ng v\u00e0 n\u00f3 r\u1ea5t t\u1ed1n th\u1eddi gian nh\u01b0 ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch rung \u0111\u1ed9ng. Gi\u1ed1ng nh\u01b0 ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch rung \u0111\u1ed9ng, ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch t\u00edn hi\u1ec7u d\u00f2ng c\u0169ng l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111\u00e1nh gi\u00e1 d\u1ef1a tr\u00ean t\u00edn hi\u1ec7u \u0111\u1ea7u ra. N\u00f3 ph\u00e2n t\u00edch d\u1eef li\u1ec7u d\u00f2ng \u0111i\u1ec7n b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi \u0111i\u1ec7n \u00e1p. Do \u0111\u00f3 r\u1ea5t kh\u00f3 \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 t\u00e1ch b\u1ea1ch li\u1ec7u m\u1ed9t t\u00edn hi\u1ec7u d\u00f2ng \u0111i\u1ec7n b\u1ea5t th\u01b0\u1eddng l\u00e0 do m\u1ed9t v\u1ea5n \u0111\u1ec1 trong \u0111\u1ed9ng c\u01a1 hay do s\u00f3ng h\u00e0i kh\u00f4ng mong mu\u1ed1n trong \u0111i\u1ec7n \u00e1p c\u1ea5p cho \u0111\u1ed9ng c\u01a1.<\/p>\n<p>Ph\u01b0\u01a1ng ph\u00e1p MCM \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n \u0111\u1ec3 lo\u1ea1i b\u1ecf nh\u1eefng thi\u1ebfu s\u00f3t c\u1ee7a c\u1ea3 ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch t\u00edn hi\u1ec7u d\u00f2ng v\u00e0 t\u00edn hi\u1ec7u rung \u0111\u1ed9ng hi\u1ec7n t\u1ea1i. C\u00e1c nguy\u00ean t\u1eafc c\u01a1 b\u1ea3n ho\u1ea1t \u0111\u1ed9ng c\u1ee7a MCM ho\u00e0n to\u00e0n kh\u00e1c v\u1edbi c\u00e1c nguy\u00ean t\u1eafc c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch t\u00edn hi\u1ec7u rung v\u00e0 ph\u00e2n t\u00edch t\u00edn hi\u1ec7u d\u00f2ng \u0111i\u1ec7n. MCM s\u1eed d\u1ee5ng k\u1ef9 thu\u1eadt ch\u1ea9n \u0111o\u00e1n v\u00e0 ph\u00e1t hi\u1ec7n l\u1ed7i d\u1ef1a tr\u00ean m\u00f4 h\u00ecnh. Trong k\u1ef9 thu\u1eadt n\u00e0y, \u0111\u1eb7c t\u00ednh \u0111\u1ed9ng (m\u00f4 h\u00ecnh) d\u1ef1 ki\u1ebfn c\u1ee7a h\u1ec7 th\u1ed1ng ba pha trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n kh\u00e1c nhau, ch\u1eb3ng h\u1ea1n nh\u01b0 t\u1ea3i, \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh v\u00e0 so s\u00e1nh v\u1edbi \u0111\u1eb7c t\u00ednh \u0111\u1ed9ng \u0111o \u0111\u01b0\u1ee3c \u0111\u1ec3 theo d\u00f5i c\u00e1c b\u1ea5t th\u01b0\u1eddng. MCM tr\u01b0\u1edbc ti\u00ean h\u1ecdc h\u1ec7 th\u1ed1ng trong m\u1ed9t kho\u1ea3ng th\u1eddi gian th\u00f4ng qua vi\u1ec7c thu th\u1eadp v\u00e0 x\u1eed l\u00fd d\u1eef li\u1ec7u th\u1eddi gian th\u1ef1c t\u1eeb h\u1ec7 th\u1ed1ng. D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng c\u00e1c thu\u1eadt to\u00e1n nh\u1eadn d\u1ea1ng h\u1ec7 th\u1ed1ng \u0111\u1ec3 t\u00ednh to\u00e1n \u0111\u1ed9ng h\u1ecdc d\u1ef1 ki\u1ebfn v\u00e0 c\u00e1c tham s\u1ed1 m\u00f4 h\u00ecnh. Nh\u1eefng thay \u0111\u1ed5i trong c\u00e1c tham s\u1ed1 c\u1ee7a h\u1ec7 th\u1ed1ng cho th\u1ea5y s\u1ef1 b\u1ea5t th\u01b0\u1eddng \u0111ang ph\u00e1t tri\u1ec3n trong h\u1ec7 th\u1ed1ng. C\u00e1c tham s\u1ed1 n\u00e0y ti\u1ebfp t\u1ee5c \u0111\u01b0\u1ee3c x\u1eed l\u00fd ch\u1ea9n \u0111o\u00e1n t\u00ecnh tr\u1ea1ng \u0111\u1ed9ng c\u01a1.<\/p>\n<p>Tr\u00e1i ng\u01b0\u1ee3c v\u1edbi ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch rung \u0111\u1ed9ng v\u00e0 ph\u00e2n t\u00edch d\u00f2ng \u0111i\u1ec7n truy\u1ec1n th\u1ed1ng, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y s\u1eed d\u1ee5ng m\u1ed1i quan h\u1ec7 nh\u00e2n-qu\u1ea3 (\u0111\u1ea7u v\u00e0o-\u0111\u1ea7u ra) v\u00e0 do \u0111\u00f3 mi\u1ec5n nhi\u1ec5m v\u1edbi nhi\u1ec5u xung quanh v\u00e0 nhi\u1ec5u trong c\u00e1c \u0111\u1ea7u v\u00e0o. Ngo\u00e0i ra s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa \u0111\u1eb7c t\u00ednh l\u00fd t\u01b0\u1edfng v\u00e0 \u0111\u1eb7c t\u00ednh th\u1ef1c t\u1ebf \u0111\u01b0\u1ee3c l\u1ecdc b\u1ecf v\u00e0 ph\u01b0\u01a1ng ph\u00e1p n\u00e0y t\u0103ng c\u01b0\u1eddng c\u00e1c b\u1ea5t th\u01b0\u1eddng CH\u1ec8 do h\u1ec7 th\u1ed1ng t\u1ea1o ra cho ph\u00e9p c\u1ea3nh b\u00e1o s\u1edbm v\u00e0 ch\u00ednh x\u00e1c h\u01a1n. H\u01b0\u1edbng ti\u1ebfp c\u1eadn h\u1ec7 chuy\u00ean gia gi\u00fap lo\u1ea1i b\u1ecf c\u00e1c nhu c\u1ea7u v\u1ec1 c\u01a1 s\u1edf d\u1eef li\u1ec7u ho\u1eb7c l\u01b0u tr\u1eef h\u1ed3 s\u01a1, chuy\u00ean gia ph\u00e2n t\u00edch, c\u00e1c ho\u1ea1t \u0111\u1ed9ng thu th\u1eadp v\u00e0 ph\u00e2n t\u00edch d\u1eef li\u1ec7u t\u1ed1n th\u1eddi gian. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng bao qu\u00e1t c\u00e1c l\u1ed7i (c\u01a1 v\u00e0 \u0111i\u1ec7n c\u0169ng nh\u01b0 h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c truy\u1ec1n \u0111\u1ed9ng) m\u1eb7c d\u00f9 n\u00f3 ch\u1ec9 \u0111o t\u00edn hi\u1ec7u \u0111i\u1ec7n \u00e1p v\u00e0 d\u00f2ng \u0111i\u1ec7n.<\/p>\n<p>Ph\u01b0\u01a1ng ph\u00e1p MCM s\u1eed d\u1ee5ng ch\u00ednh \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n c\u1ee7a thi\u1ebft b\u1ecb l\u00e0m c\u1ea3m bi\u1ebfn. Do \u0111\u00f3, b\u1ea5t k\u1ef3 l\u1ed7i n\u00e0o c\u1ee7a thi\u1ebft b\u1ecb \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9ng c\u01a1 ho\u1eb7c h\u1ec7 th\u1ed1ng ba pha c\u0169ng \u0111\u01b0\u1ee3c MCM quan s\u00e1t. MCM gi\u1ea3i quy\u1ebft nhi\u1ec1u v\u1ea5n \u0111\u1ec1 m\u00e0 vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c h\u1ec7 th\u1ed1ng ph\u00e2n t\u00edch t\u00edn hi\u1ec7u d\u00f2ng \u0111i\u1ec7n v\u00e0 t\u00edn hi\u1ec7u rung \u0111\u1ed9ng, bao g\u1ed3m:<\/p>\n<ul>\n<li>Chi ph\u00ed; Chi ph\u00ed cho vi\u1ec7c s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p MCM v\u00e0 c\u00e1c ph\u1ee5 ki\u1ec7n c\u1ee7a n\u00f3 l\u00e0 kh\u00f4ng t\u1ed1n k\u00e9m<\/li>\n<li>D\u1ec5 c\u00e0i \u0111\u1eb7t; C\u00e1c c\u1ea3m bi\u1ebfn d\u00f2ng \u0111i\u1ec7n v\u00e0 \u0111i\u1ec7n \u00e1p ti\u00eau chu\u1ea9n c\u00f4ng nghi\u1ec7p c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m c\u1ea3m bi\u1ebfn. Nh\u1eefng c\u1ea3m bi\u1ebfn n\u00e0y kh\u00f4ng t\u1ed1n k\u00e9m, d\u1ec5 d\u00e0ng c\u00e0i \u0111\u1eb7t v\u00e0 quen thu\u1ed9c v\u1edbi t\u1ea5t c\u1ea3 nh\u00e2n vi\u00ean b\u1ea3o tr\u00ec \u0111i\u1ec7n. MCM c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf b\u1ea5t c\u1ee9 n\u01a1i n\u00e0o h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng. V\u00ec c\u00e1c c\u1ea3m bi\u1ebfn v\u00e0 b\u1ed9 ph\u1eadn ch\u00ednh th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1eafn trong t\u1ee7 \u0111i\u1ec1u khi\u1ec3n. M\u1ed9t thi\u1ebft b\u1ecb MCM kh\u00f4ng c\u1ea7n ph\u1ea3i \u1edf g\u1ea7n h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c gi\u00e1m s\u00e1t (v\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t \u0111\u1ed9ng c\u01a1).<\/li>\n<li>D\u1ec5 s\u1eed d\u1ee5ng; ph\u01b0\u01a1ng ph\u00e1p ti\u1ebfp c\u1eadn h\u1ec7 chuy\u00ean gia gi\u00fap MCM c\u00f3 th\u1ec3 t\u1ef1 \u0111\u1ed9ng thi\u1ebft l\u1eadp c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0 theo d\u00f5i c\u00e1c thay \u0111\u1ed5i trong c\u00e1c tham s\u1ed1 n\u00e0y. M\u1ee9c \u0111\u1ed9 l\u1ed7i \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y tr\u00ean 1 b\u1ea3ng hi\u1ec3n th\u1ecb \u0111\u01a1n gi\u1ea3n v\u00e0 tr\u1ef1c quan c\u1ee7a ch\u00ednh thi\u1ebft b\u1ecb MCM. Do \u0111\u00f3, n\u00f3 lo\u1ea1i b\u1ecf s\u1ef1 c\u1ea7n thi\u1ebft ph\u1ea3i c\u00f3 chuy\u00ean m\u00f4n c\u1ee7a c\u00e1c k\u1ef9 s\u01b0 \u0111\u01b0\u1ee3c \u0111\u00e0o t\u1ea1o v\u00e0 c\u00f3 k\u1ef9 n\u0103ng cao<\/li>\n<li>\u0110\u1ed9 l\u1eb7p l\u1ea1i; D\u1eef li\u1ec7u MCM c\u00f3 t\u00ednh l\u1eb7p l\u1ea1i cao. Kh\u00f4ng c\u00f3 hi\u1ec7u \u1ee9ng b\u00ean ngo\u00e0i ho\u1eb7c n\u1ec1n n\u00e0o c\u00f3 th\u1ec3 can thi\u1ec7p v\u00e0o kh\u1ea3 n\u0103ng c\u1ee7a MCM \u0111\u1ec3 gi\u00e1m s\u00e1t c\u00e1c h\u1ec7 th\u1ed1ng<\/li>\n<li>Bao qu\u00e1t to\u00e0n di\u1ec7n l\u1ed7i \u0111\u1ed9ng c\u01a1; c\u1ea3 l\u1ed7i \u0111i\u1ec7n v\u00e0 c\u01a1 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n b\u1eb1ng m\u1ed9t thi\u1ebft b\u1ecb duy nh\u1ea5t<\/li>\n<li>C\u1ea3nh b\u00e1o n\u00e2ng cao; c\u00e1c ng\u01b0\u1ee1ng kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi c\u00e1c \u0111i\u1ec1u ki\u1ec7n ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng do c\u00e1ch ti\u1ebfp c\u1eadn theo h\u01b0\u1edbng h\u1ec7 chuy\u00ean gia. Do \u0111\u00f3, MCM cung c\u1ea5p b\u00e1o \u0111\u1ed9ng s\u1edbm v\u00e0 ch\u00ednh x\u00e1c v\u1ec1 t\u00ecnh tr\u1ea1ng \u0111\u1ed9ng c\u01a1.<\/li>\n<li>T\u00edch h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng h\u00f3a nh\u00e0 m\u00e1y; C\u00e1c thi\u1ebft b\u1ecb MCM d\u1ec5 d\u00e0ng k\u1ebft n\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng thu nh\u1eadn b\u00ean ngo\u00e0i \u0111\u1ec3 gi\u00e1m s\u00e1t li\u00ean t\u1ee5c th\u00f4ng qua h\u1ec7 th\u1ed1ng truy\u1ec1n th\u00f4ng c\u00f4ng nghi\u1ec7p. T\u00ednh n\u0103ng n\u00e0y c\u00f9ng v\u1edbi ph\u01b0\u01a1ng ph\u00e1p ch\u1ec9 b\u00e1o l\u1ed7i \u0111\u01a1n gi\u1ea3n l\u00e0m cho MCM tr\u1edf th\u00e0nh m\u1ed9t thi\u1ebft b\u1ecb l\u00fd t\u01b0\u1edfng \u0111\u1ec3 s\u1eed d\u1ee5ng v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng h\u00f3a nh\u00e0 m\u00e1y<\/li>\n<\/ul>\n<p>V\u00ec nh\u1eefng l\u00fd do tr\u00ean, MCM h\u1ee9a h\u1eb9n l\u00e0 1 l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng cho vi\u1ec7c gi\u00e1m s\u00e1t li\u00ean t\u1ee5c t\u00ecnh tr\u1ea1ng \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n ba pha. M\u1ed9t so s\u00e1nh c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p MCM v\u1edbi ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch \u0111\u1ed9 rung v\u00e0 t\u00edn hi\u1ec7u d\u00f2ng \u0111\u01b0\u1ee3c \u0111\u01b0a ra trong B\u1ea3ng 1.<\/p>\n<table style=\"height: 709px;\" width=\"604\">\n<tbody>\n<tr>\n<td style=\"text-align: center;\" width=\"151\"><strong>T\u00ednh n\u0103ng<\/strong><\/td>\n<td style=\"text-align: center;\" width=\"57\"><strong>MCM<\/strong><\/td>\n<td style=\"text-align: center;\" width=\"113\"><strong>Ph\u00e2n t\u00edch t\u00edn hi\u1ec7u d\u00f2ng \u0111i\u1ec7n<\/strong><\/td>\n<td style=\"text-align: center;\" width=\"142\"><strong>H\u1ec7 th\u1ed1ng ph\u00e2n t\u00edch rung \u0111\u1ed9ng di \u0111\u1ed9ng<\/strong><\/td>\n<td style=\"text-align: center;\" width=\"138\"><strong>H\u1ec7 th\u1ed1ng ph\u00e2n t\u00edch rung \u0111\u1ed9ng li\u00ean t\u1ee5c<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"151\">Chi ph\u00ed th\u1ea5p?<\/td>\n<td style=\"text-align: center;\" width=\"57\">C\u00f3<\/td>\n<td style=\"text-align: center;\" width=\"113\">Kh\u00f4ng<\/td>\n<td style=\"text-align: center;\" width=\"142\">C\u00f3<\/td>\n<td style=\"text-align: center;\" width=\"138\">Kh\u00f4ng<\/td>\n<\/tr>\n<tr>\n<td width=\"151\">D\u1ec5 c\u00e0i \u0111\u1eb7t \/ thu th\u1eadp d\u1eef li\u1ec7u<\/td>\n<td style=\"text-align: center;\" width=\"57\">C\u00f3<\/td>\n<td style=\"text-align: center;\" width=\"113\">C\u00f3<\/td>\n<td style=\"text-align: center;\" width=\"142\">Kh\u00f4ng<\/td>\n<td style=\"text-align: center;\" width=\"138\">Kh\u00f4ng<\/td>\n<\/tr>\n<tr>\n<td width=\"151\">D\u1ec5 s\u1eed d\u1ee5ng?<\/td>\n<td style=\"text-align: center;\" width=\"57\">C\u00f3<\/td>\n<td style=\"text-align: center;\" width=\"113\">Kh\u00f4ng<\/td>\n<td style=\"text-align: center;\" width=\"142\">Kh\u00f4ng<\/td>\n<td style=\"text-align: center;\" width=\"138\">C\u00f3<\/td>\n<\/tr>\n<tr>\n<td width=\"151\">Ng\u01b0\u1eddi ch\u01b0a \u0111\u01b0\u1ee3c \u0111\u00e0o t\u1ea1o c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng?<\/td>\n<td style=\"text-align: center;\" width=\"57\">C\u00f3<\/td>\n<td style=\"text-align: center;\" width=\"113\">Kh\u00f4ng<\/td>\n<td style=\"text-align: center;\" width=\"142\">Kh\u00f4ng<\/td>\n<td style=\"text-align: center;\" width=\"138\">C\u00f3<\/td>\n<\/tr>\n<tr>\n<td width=\"151\">Bao qu\u00e1t l\u1ed7i C\u01a1 v\u00e0 \u0110i\u1ec7n?<\/td>\n<td style=\"text-align: center;\" width=\"57\">C\u00f3<\/td>\n<td style=\"text-align: center;\" width=\"113\">C\u00f3<\/td>\n<td style=\"text-align: center;\" width=\"142\">Kh\u00f4ng<\/td>\n<td style=\"text-align: center;\" width=\"138\">Kh\u00f4ng<\/td>\n<\/tr>\n<tr>\n<td width=\"151\">C\u1ea3nh b\u00e1o ng\u01b0\u1ee1ng th\u1ea5p\/C\u1ea3nh b\u00e1o N\u00e2ng cao<\/td>\n<td style=\"text-align: center;\" width=\"57\">C\u00f3<\/td>\n<td style=\"text-align: center;\" width=\"113\">C\u00f3<\/td>\n<td style=\"text-align: center;\" width=\"142\">C\u00f3<\/td>\n<td style=\"text-align: center;\" width=\"138\">Kh\u00f4ng<\/td>\n<\/tr>\n<tr>\n<td width=\"151\">Kh\u1ea3 n\u0103ng l\u00ean k\u1ebf ho\u1ea1ch b\u1ea3o tr\u00ec?<\/td>\n<td style=\"text-align: center;\" width=\"57\">C\u00f3<\/td>\n<td style=\"text-align: center;\" width=\"113\">Kh\u00f4ng<\/td>\n<td style=\"text-align: center;\" width=\"142\">Kh\u00f4ng<\/td>\n<td style=\"text-align: center;\" width=\"138\">C\u00f3<\/td>\n<\/tr>\n<tr>\n<td width=\"151\">T\u00edch h\u1ee3p v\u00e0o h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng h\u00f3a nh\u00e0 m\u00e1y?<\/td>\n<td style=\"text-align: center;\" width=\"57\">C\u00f3<\/td>\n<td style=\"text-align: center;\" width=\"113\">Kh\u00f4ng<\/td>\n<td style=\"text-align: center;\" width=\"142\">Kh\u00f4ng<\/td>\n<td style=\"text-align: center;\" width=\"138\">C\u00f3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><em>B\u1ea3ng 1: So s\u00e1nh t\u00ednh n\u0103ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p theo d\u00f5i t\u00ecnh tr\u1ea1ng \u0111\u1ed9ng c\u01a1<\/em><\/p>\n<p>Ngo\u00e0i vi\u1ec7c h\u1ed7 tr\u1ee3 l\u00ean k\u1ebf ho\u1ea1ch b\u1ea3o tr\u00ec, MCM c\u0169ng cung c\u1ea5p th\u00f4ng tin ch\u1ea9n \u0111o\u00e1n v\u1ec1 \u0111\u1ed9ng c\u01a1. Th\u00f4ng tin \u0111\u01b0\u1ee3c cung c\u1ea5p b\u1edfi MCM c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 kh\u1eafc ph\u1ee5c c\u00e1c s\u1ef1 c\u1ed1 trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p. Tuy nhi\u00ean, v\u1edbi nhi\u1ec1u l\u1ed7i ho\u1eb7c nhi\u1ec1u \u1ee9ng d\u1ee5ng \u0111\u1ed9ng c\u01a1 kh\u00e1c nhau, c\u00e1c lo\u1ea1i l\u1ed7i kh\u00e1c nhau l\u1ea1i c\u00f3 th\u1ec3 s\u1ebd t\u1ea1o ra c\u00e1c t\u00edn hi\u1ec7u t\u01b0\u01a1ng t\u1ef1 nhau. Trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p \u0111\u00f3, c\u1ea7n thu th\u1eadp v\u00e0 ph\u00e2n t\u00edch th\u00eam c\u00e1c t\u00edn hi\u1ec7u kh\u00e1c (t\u1ed1c \u0111\u1ed9 \u0111\u1ed9ng c\u01a1, m\u00f4-men xo\u1eafn, rung, v.v.,), \u0111\u1ed3ng th\u1eddi s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c nh\u01b0 ph\u00e2n t\u00edch nhi\u1ec7t, ph\u00e2n t\u00edch h\u00f3a h\u1ecdc, v.v.<\/p>\n<h2>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a MCM<\/h2>\n<p>Ph\u01b0\u01a1ng ph\u00e1p MCM \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t v\u1ec1 m\u1ed9t s\u1ea3n ph\u1ea9m theo d\u00f5i t\u00ecnh tr\u1ea1ng c\u00f3 th\u1ec3 cung c\u1ea5p th\u00f4ng tin v\u1ec1 l\u1ecbch b\u1ea3o tr\u00ec ch\u00ednh x\u00e1c v\u00e0 \u0111\u01a1n gi\u1ea3n, m\u00e0 kh\u00f4ng c\u1ea7n \u0111\u1ebfn s\u1ef1 tham gia c\u1ee7a chuy\u00ean gia \u0111\u01b0\u1ee3c \u0111\u00e0o t\u1ea1o s\u00e2u v\u1ec1 l\u0129nh v\u1ef1c n\u00e0y. C\u00f4ng ngh\u1ec7 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c l\u1ed7i c\u01a1 kh\u00ed v\u00e0 \u0111i\u1ec7n s\u1eafp x\u1ea3y ra, l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn v\u00e0 c\u1ea5p b\u1ea3n quy\u1ec1n, \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng trong c\u00e1c l\u0129nh v\u1ef1c h\u00e0ng kh\u00f4ng v\u00e0 kh\u00f4ng gian [3,4,5,6]. C\u00f4ng ngh\u1ec7 n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c gi\u1ea3i th\u01b0\u1edfng m\u1ed9t trong 40 s\u1ea3n ph\u1ea9m t\u1ed1t nh\u1ea5t c\u1ee7a n\u0103m 2000 b\u1edfi T\u1ea1p ch\u00ed C\u00f4ng ngh\u1ec7 \u0111i\u1ec1u khi\u1ec3n (Control Engineering Magazine) [7]. Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a MCM \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 d\u01b0\u1edbi \u0111\u00e2y s\u1eed d\u1ee5ng m\u1ed9t h\u1ec7 th\u1ed1ng d\u1ef1a tr\u00ean \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n \u0111\u1ec3 bi\u1ec3u di\u1ec3n c\u00e1c h\u1ec7 th\u1ed1ng truy\u1ec1n \u0111\u1ed9ng \u0111i\u1ec7n 3 pha.<\/p>\n<p>MCM s\u1eed d\u1ee5ng k\u1ef9 thu\u1eadt ph\u00e1t hi\u1ec7n l\u1ed7i v\u00e0 chu\u1ea9n \u0111o\u00e1n t\u00ecnh tr\u1ea1ng d\u1ef1a tr\u00ean m\u00f4 h\u00ecnh to\u00e1n h\u1ecdc. Nguy\u00ean l\u00fd c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p ti\u1ebfp c\u1eadn n\u00e0y, \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 trong H\u00ecnh 1, \u0111\u00f3 l\u00e0 so s\u00e1nh m\u00f4 h\u00ecnh \u0111\u1ed9ng h\u1ecdc c\u1ee7a m\u00f4 h\u00ecnh to\u00e1n h\u1ecdc c\u1ee7a thi\u1ebft b\u1ecb hay qu\u00e1 tr\u00ecnh, v\u1edbi m\u00f4 h\u00ecnh \u0111\u1ed9ng h\u1ecdc \u0111o \u0111\u01b0\u1ee3c th\u1ef1c t\u1ebf.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3870 aligncenter\" src=\"http:\/\/mese.vn\/wp-content\/uploads\/2019\/03\/modelbased-method.png\" alt=\"\" width=\"296\" height=\"146\" srcset=\"https:\/\/tofu.isoinaction.com\/mesevn\/wp-content\/uploads\/sites\/194\/2019\/03\/modelbased-method.png 756w, https:\/\/tofu.isoinaction.com\/mesevn\/wp-content\/uploads\/sites\/194\/2019\/03\/modelbased-method-640x316.png 640w\" sizes=\"auto, (max-width: 296px) 100vw, 296px\" \/><\/p>\n<p style=\"text-align: center;\">H\u00ecnh 1: S\u01a1 \u0111\u1ed3 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a MCM<\/p>\n<p>Trong H\u00ecnh 1, u(n) l\u00e0 \u0111i\u1ec7n \u00e1p \u0111\u1ea7u v\u00e0o c\u1ee7a c\u1ea3 m\u00f4 h\u00ecnh to\u00e1n h\u1ecdc l\u1eabn h\u1ec7 th\u1ed1ng s\u1eed d\u1ee5ng \u0111\u1ed9ng c\u01a1 th\u1ef1c t\u1ebf, \u0111\u00f3 l\u00e0 \u0111i\u1ec7n \u00e1p \u0111o \u0111\u01b0\u1ee3c. y(n) t\u01b0\u01a1ng \u1ee9ng v\u1edbi \u0111\u1ea7u ra c\u1ee7a h\u1ec7 th\u1ed1ng d\u1ef1a tr\u00ean \u0111\u1ed9ng c\u01a1, n\u00f3 t\u01b0\u01a1ng \u1ee9ng v\u1edbi d\u00f2ng \u0111i\u1ec7n \u0111o \u0111\u01b0\u1ee3c. v(n), m\u1eb7t kh\u00e1c, l\u00e0 d\u00f2ng \u0111i\u1ec7n t\u00ednh to\u00e1n \u0111\u01b0\u1ee3c b\u1edfi m\u00f4 h\u00ecnh. Y(n)-v(n) l\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa d\u00f2ng th\u1ef1c t\u1ebf v\u00e0 d\u00f2ng t\u00ednh to\u00e1n. M\u00f4 h\u00ecnh bao g\u1ed3m m\u1ed9t chu\u1ed7i c\u00e1c ph\u01b0\u01a1ng tr\u00ecnh vi ph\u00e2n, m\u00f4 t\u1ea3 \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n t\u1eeb c\u1ee7a \u0111\u1ed9ng c\u01a1. D\u1eef li\u1ec7u thu th\u1eadp \u0111\u01b0\u1ee3c trong th\u1eddi gian th\u1ef1c c\u1ee7a h\u1ec7 th\u1ed1ng s\u1ebd \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1edfi c\u00e1c thu\u1eadt to\u00e1n nh\u1eadn d\u1ea1ng h\u1ec7 th\u1ed1ng \u0111\u1ec3 t\u00ednh to\u00e1n c\u00e1c tham s\u1ed1 m\u00f4 h\u00ecnh. \u0110\u1ed9ng c\u01a1 truy\u1ec1n \u0111\u1ed9ng cho m\u00e1y hay qu\u00e1 tr\u00ecnh s\u1ebd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u01b0 1 c\u1ea3m bi\u1ebfn. L\u1ed7i ti\u1ec1m \u1ea9n trong \u0111\u1ed9ng c\u01a1 c\u0169ng nh\u01b0 trong h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng b\u1edfi \u0111\u1ed9ng c\u01a1 ho\u1eb7c nh\u1eefng t\u00ecnh tr\u1ea1ng kh\u00f4ng \u0111\u01b0\u1ee3c d\u1ef1 \u0111o\u00e1n tr\u01b0\u1edbc c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng t\u1edbi ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng c\u0169ng s\u1ebd \u1ea3nh h\u01b0\u1edfng t\u1edbi c\u00e1c tham s\u1ed1 m\u00f4 h\u00ecnh.<\/p>\n<p>MCM \u0111\u1ea7u ti\u00ean s\u1ebd h\u1ecdc v\u1ec1 h\u1ec7 th\u1ed1ng truy\u1ec1n \u0111\u1ed9ng \u0111i\u1ec7n trong m\u1ed9t kho\u1ea3ng th\u1eddi gian b\u1eb1ng c\u00e1ch thu th\u1eadp v\u00e0 x\u1eed l\u00fd d\u1eef li\u1ec7u \u0111\u1ed9ng c\u01a1. K\u1ebft qu\u1ea3 c\u1ee7a d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c x\u1eed l\u00fd s\u1ebd \u0111\u01b0\u1ee3c l\u01b0u trong c\u01a1 s\u1edf d\u1eef li\u1ec7u n\u1ed9i t\u1ea1i v\u00e0 m\u1ed9t m\u00f4 h\u00ecnh \u0111\u01b0\u1ee3c \u0111\u01b0a ra. M\u00f4 h\u00ecnh tham chi\u1ebfu n\u00e0y c\u01a1 b\u1ea3n bao g\u1ed3m c\u00e1c tham s\u1ed1 m\u00f4 h\u00ecnh, gi\u00e1 tr\u1ecb trung b\u00ecnh c\u1ee7a ch\u00fang v\u00e0 c\u00e1c sai l\u1ec7ch chu\u1ea9n. Trong khi theo d\u00f5i, MCM s\u1ebd x\u1eed l\u00fd d\u1eef li\u1ec7u \u0111\u1ed9ng c\u01a1 thu \u0111\u01b0\u1ee3c v\u00e0 \u0111\u1ed1i chi\u1ebfu v\u1edbi k\u1ebft qu\u1ea3 l\u01b0u trong c\u01a1 s\u1edf d\u1eef li\u1ec7u n\u1ed9i t\u1ea1i c\u1ee7a n\u00f3. N\u1ebfu nh\u01b0 k\u1ebft qu\u1ea3 c\u00f3 \u0111\u01b0\u1ee3c t\u1eeb d\u1eef li\u1ec7u tu th\u1eadp \u0111\u01b0\u1ee3c c\u00f3 s\u1ef1 sai kh\u00e1c \u0111\u00e1ng k\u1ec3 v\u1edbi m\u00f4 h\u00ecnh tham chi\u1ebfu, MCM s\u1ebd hi\u1ec3n th\u1ecb m\u1ed9t l\u1ed7i n\u00e0o \u0111\u00f3. M\u1ee9c \u0111\u1ed9 c\u1ee7a l\u1ed7i \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng c\u00e1ch t\u00ednh \u0111\u1ebfn c\u01b0\u1eddng \u0111\u1ed9 v\u00e0 t\u1ea7n su\u1ea5t c\u1ee7a sai l\u1ec7ch.<\/p>\n<p>T\u1ed5ng c\u1ed9ng, MCM theo d\u00f5i v\u00e0 so s\u00e1nh 22 tham s\u1ed1 kh\u00e1c nhau (tham s\u1ed1 m\u00f4 h\u00ecnh). Nh\u1eefng tham s\u1ed1 n\u00e0y \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i l\u00e0m 3 nh\u00f3m. C\u00f3 8 tham s\u1ed1 trong nh\u00f3m th\u1ee9 nh\u1ea5t \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 tham s\u1ed1 \u0111i\u1ec7n. \u0110\u00e2y l\u00e0 nh\u1eefng tham s\u1ed1 m\u1ea1ng l\u01b0\u1edbi t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u00e0 t\u01b0\u01a1ng \u1ee9ng v\u1edbi tham s\u1ed1 v\u1eadt l\u00fd c\u1ee7a \u0111\u1ed9ng c\u01a1, nh\u01b0 \u0111i\u1ec7n c\u1ea3m, \u0111i\u1ec7n tr\u1edf,\u2026C\u00e1c tham s\u1ed1 n\u00e0y nh\u1ea1y c\u1ea3m v\u1edbi nh\u1eefng l\u1ed7i v\u1ec1 \u0111i\u1ec7n ti\u1ec1m \u1ea9n trong \u0111\u1ed9ng c\u01a1. MCM \u01b0\u1edbc l\u01b0\u1ee3ng v\u00e0 ph\u00e2n t\u00edch sai l\u1ec7ch gi\u1eefa tham s\u1ed1 m\u00f4 h\u00ecnh v\u00e0o b\u1ea5t c\u1ee9 th\u1eddi \u0111i\u1ec3m n\u00e0o v\u00e0 gi\u00e1 tr\u1ecb trung b\u00ecnh c\u1ee7a nh\u1eefng tham s\u1ed1 t\u01b0\u01a1ng \u1ee9ng \u0111\u00f3 c\u00f3 \u0111\u01b0\u1ee3c trong qu\u00e1 tr\u00ecnh h\u1ecdc. Nh\u1eefng sai l\u1ec7ch n\u00e0y \u0111\u01b0\u1ee3c chu\u1ea9n h\u00f3a c\u00f3 t\u00ednh \u0111\u1ebfn sai l\u1ec7ch chu\u1ea9n thu \u0111\u01b0\u1ee3c trong qu\u00e1 tr\u00ecnh h\u1ecdc. B\u1edfi v\u1eady c\u00e1c gi\u00e1 tr\u1ecb hi\u1ec3n th\u1ecb s\u1ed1 l\u01b0\u1ee3ng c\u00e1c sai l\u1ec7ch chu\u1ea9n so v\u1edbi gi\u00e1 tr\u1ecb trung b\u00ecnh c\u00f3 \u0111\u01b0\u1ee3c trong qu\u00e1 tr\u00ecnh h\u1ecdc. N\u1ebfu l\u1edbn h\u01a1n ng\u01b0\u1ee1ng, m\u1ed9t c\u1ea3nh b\u00e1o s\u1ebd \u0111\u01b0\u1ee3c \u0111\u01b0a ra. S\u1ef1 thay \u0111\u1ed5i v\u1ec1 gi\u00e1 tr\u1ecb t\u01b0\u01a1ng \u1ee9ng v\u1edbi c\u00e1c l\u1ed7i ti\u1ec1m \u1ea9n trong h\u1ec7 th\u1ed1ng. Ch\u1eb3ng h\u1ea1n m\u1ed9t s\u1ef1 c\u1ed1 c\u00e1ch \u0111i\u1ec7n trong cu\u1ed9n c\u1ea3m s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c tham s\u1ed1 t\u01b0\u01a1ng \u1ee9ng v\u1edbi \u0111i\u1ec7n tr\u1edf. S\u1ef1 bi\u1ebfn \u0111\u1ed5i c\u1ee7a ch\u00fang s\u1ebd cho ph\u00e9p MCM ph\u00e1t hi\u1ec7n s\u1ef1 c\u1ed1 c\u00e1ch \u0111i\u1ec7n \u1edf giai \u0111o\u1ea1n \u0111\u1ea7u. M\u1eb7c d\u00f9 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c l\u1ed7i \u0111i\u1ec7n, ch\u00fang c\u0169ng c\u00f3 th\u1ec3 hi\u1ec3n th\u1ecb c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 c\u01a1 kh\u00ed. V\u00ed d\u1ee5 s\u1ef1 kh\u00f4ng c\u00e2n b\u1eb1ng hay v\u1ea5n \u0111\u1ec1 \u1edf b\u1ed9 truy\u1ec1n \u0111\u1ed9ng c\u00f3 th\u1ec3 g\u00e2y ra b\u1ea5t th\u01b0\u1eddng v\u1ec1 \u0111\u1ed9ng h\u1ecdc \u1edf kho\u1ea3ng tr\u1ed1ng gi\u1eefa rotor v\u00e0 stator. S\u1ef1 b\u1ea5t th\u01b0\u1eddng n\u00e0y s\u1ebd g\u00e2y ra m\u1ed9t s\u1ef1 thay \u0111\u1ed5i v\u1ec1 c\u00e1c tham s\u1ed1 c\u1ea3m \u1ee9ng v\u00e0 do \u0111\u00f3 thay \u0111\u1ed5 c\u00e1c tham s\u1ed1 m\u00f4 h\u00ecnh. B\u1eb1ng vi\u1ec7c theo d\u00f5i nh\u1eefng thay \u0111\u1ed5i \u0111\u1ed1i v\u1edbi nh\u1eefng tham s\u1ed1 m\u00f4 h\u00ecnh n\u00e0y, s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n s\u1edbm. B\u1edfi v\u1eady s\u1ef1 ph\u00e1t hi\u1ec7n s\u1edbm c\u00f3 th\u1ec3 ph\u00f2ng tr\u00e1nh nh\u1eefng h\u1ecfng h\u00f3c xa h\u01a1n.<\/p>\n<p>C\u00e1c th\u00f4ng s\u1ed1 \u0111i\u1ec7n \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00eam th\u00e0nh hai nh\u00f3m. C\u00e1c th\u00f4ng s\u1ed1 \u0111i\u1ec7n 1-4 ch\u1ec9 ra c\u00e1c v\u1ea5n \u0111\u1ec1 li\u00ean quan \u0111\u1ebfn r\u00f4to, stato, cu\u1ed9n d\u00e2y, vv trong khi 5-8 ch\u1ec9 ra c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 cung c\u1ea5p \u0111i\u1ec7n nh\u01b0 m\u1ea5t c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p, v\u1ea5n \u0111\u1ec1 c\u00e1ch ly c\u1ee7a c\u00e1p, t\u1ee5 \u0111i\u1ec7n, \u0111\u1ea7u n\u1ed1i \u0111\u1ed9ng c\u01a1, \u0111\u1ed9 ch\u00f9ng \u0111\u1ea7u cu\u1ed1i, ti\u1ebfp \u0111i\u1ec3m b\u1ecb l\u1ed7i, vv<\/p>\n<p>C\u00e1c tham s\u1ed1 trong nh\u00f3m th\u1ee9 hai r\u1ea5t nh\u1ea1y c\u1ea3m v\u1edbi c\u00e1c l\u1ed7i c\u01a1 h\u1ecdc nh\u01b0 m\u1ea5t c\u00e2n b\u1eb1ng t\u1ea3i, sai l\u1ec7ch, kh\u1edbp n\u1ed1i v\u00e0 c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 \u1ed5 tr\u1ee5c. Ch\u00fang \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 Th\u00f4ng s\u1ed1 c\u01a1 h\u1ecdc 1-12. Nh\u1eefng tham s\u1ed1 \u0111\u01b0\u1ee3c l\u1ea5y t\u1eeb ph\u1ed5 t\u1ea7n s\u1ed1 c\u1ee7a c\u00e1c t\u00edn hi\u1ec7u \u0111i\u1ec7n t\u01b0\u01a1ng t\u1ef1 nh\u01b0 ph\u00e2n t\u00edch t\u00edn hi\u1ec7u d\u00f2ng \u0111i\u1ec7n. Tuy nhi\u00ean, MCM s\u1eed d\u1ee5ng ph\u1ed5 thu \u0111\u01b0\u1ee3c t\u1eeb s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa d\u00f2ng \u0111i\u1ec7n d\u1ef1 ki\u1ebfn thu \u0111\u01b0\u1ee3c t\u1eeb m\u00f4 h\u00ecnh v\u00e0 d\u00f2ng \u0111i\u1ec7n th\u1ef1c t\u1ebf. Nh\u1eefng kh\u00e1c bi\u1ec7t n\u00e0y ch\u1ec9 bao g\u1ed3m nh\u1eefng b\u1ea5t th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi \u0111\u1ed9ng c\u01a1. Do \u0111\u00f3, ch\u00fang mi\u1ec5n nhi\u1ec5m v\u1edbi nhi\u1ec5u ho\u1eb7c s\u00f3ng h\u00e0i trong \u0111i\u1ec7n \u00e1p cung c\u1ea5p.<\/p>\n<p>C\u00e1c tham s\u1ed1 c\u01a1 h\u1ecdc t\u01b0\u01a1ng \u1ee9ng v\u1edbi 12 gi\u00e1 tr\u1ecb t\u1ed1i \u0111a thu \u0111\u01b0\u1ee3c trong ph\u1ed5 t\u1ea7n s\u1ed1. C\u00e1c th\u00f4ng s\u1ed1 n\u00e0y c\u0169ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho m\u1ee5c \u0111\u00edch ch\u1ea9n \u0111o\u00e1n. T\u01b0\u01a1ng t\u1ef1 nh\u01b0 \u0111\u1ed9 rung c\u0169ng nh\u01b0 c\u00e1c k\u1ef9 thu\u1eadt ph\u00e2n t\u00edch t\u00edn hi\u1ec7u d\u00f2ng, t\u1ea7n s\u1ed1 m\u00e0 ch\u00fang x\u1ea3y ra cho bi\u1ebft lo\u1ea1i l\u1ed7i, ngh\u0129a l\u00e0 s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng, s\u1ef1 l\u1ecfng c\u1ee7a b\u00e1nh r\u0103ng, ch\u1ea3y d\u1ea7u, c\u00e1nh qu\u1ea1t, v\u00f2ng bi b\u00ean trong ho\u1eb7c b\u00ean ngo\u00e0i, v.v. C\u00e1c tham s\u1ed1 n\u00e0y c\u0169ng nh\u01b0 t\u1ea7n s\u1ed1 t\u01b0\u01a1ng \u1ee9ng \u0111\u01b0\u1ee3c cung c\u1ea5p cho ng\u01b0\u1eddi d\u00f9ng cho m\u1ee5c \u0111\u00edch ch\u1ea9n \u0111o\u00e1n v\u00e0 x\u00e1c \u0111\u1ecbnh xu h\u01b0\u1edbng.<\/p>\n<p>C\u00e1c tham s\u1ed1 trong nh\u00f3m th\u1ee9 ba r\u1ea5t nh\u1ea1y c\u1ea3m v\u1edbi nh\u1eefng thay \u0111\u1ed5i trong h\u00e0nh vi c\u1ee7a h\u1ec7 th\u1ed1ng. Ch\u00fang \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 tham s\u1ed1 ph\u00f9 h\u1ee3p (ho\u1eb7c ph\u1ea7n d\u01b0). C\u00f3 2 th\u00f4ng s\u1ed1 ph\u00f9 h\u1ee3p. \u0110\u00e2y l\u00e0 nh\u1eefng sai l\u1ec7ch gi\u1eefa d\u00f2ng \u0111i\u1ec7n th\u1ef1c t\u1ebf (pha d v\u00e0 pha q) v\u00e0 d\u00f2ng \u0111i\u1ec7n t\u00ednh t\u1eeb m\u00f4 h\u00ecnh. N\u1ebfu c\u00e1c tham s\u1ed1 n\u00e0y t\u0103ng tr\u00ean gi\u00e1 tr\u1ecb ng\u01b0\u1ee1ng c\u1ee7a ch\u00fang, h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c coi l\u00e0 h\u00e0nh x\u1eed kh\u00e1c v\u1edbi trong giai \u0111o\u1ea1n h\u1ecdc cho th\u1ea5y t\u1ed3n t\u1ea1i l\u1ed7i \u0111ang ph\u00e1t tri\u1ec3n trong h\u1ec7 th\u1ed1ng.<\/p>\n<p>B\u00ean c\u1ea1nh c\u00e1c tham s\u1ed1 tr\u00ean, MCM c\u0169ng theo d\u00f5i \u0111i\u1ec7n \u00e1p c\u1ea5p cho \u0111\u1ed9ng c\u01a1 c\u0169ng nh\u01b0 t\u00ecnh tr\u1ea1ng t\u1ea3i. N\u1ebfu nh\u01b0 \u0111i\u1ec7n \u00e1p cung c\u1ea5p thay \u0111\u1ed5i b\u1ea5t th\u01b0\u1eddng, m\u1ea5t c\u00e2n b\u1eb1ng ho\u1eb7c c\u00f3 s\u00f3ng h\u00e0i t\u1ea7n s\u1ed1 r\u1ea5t cao, thi\u1ebft b\u1ecb s\u1ebd \u0111\u01b0a ra 1 c\u1ea3nh b\u00e1o Watch Line. T\u01b0\u01a1ng t\u1ef1 n\u1ebfu nh\u01b0 t\u00ecnh tr\u1ea1ng t\u1ea3i kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi t\u00ecnh tr\u1ea1ng quan s\u00e1t \u0111\u01b0\u1ee3c trong qu\u00e1 tr\u00ecnh h\u1ecdc, thi\u1ebft b\u1ecb s\u1ebd \u0111\u01b0a ra c\u1ea3nh b\u00e1o Watch Load. C\u1ea3nh b\u00e1o Watch Load c\u00f3 ngh\u0129a l\u00e0 ho\u1eb7c t\u00ecnh tr\u1ea1ng t\u1ea3i thay \u0111\u1ed5i hay c\u00f3 l\u1ed7i trong h\u1ec7 th\u1ed1ng. N\u1ebfu ng\u01b0\u1eddi d\u00f9ng ph\u00e1t hi\u1ec7n ra m\u1ed9t thay \u0111\u1ed5i trong qu\u00e1 tr\u00ecnh, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 th\u00eam t\u00ecnh tr\u1ea1ng t\u1ea3i m\u1edbi v\u00e0o t\u00ecnh tr\u1ea1ng \u0111\u01b0\u1ee3c quan s\u00e1t trong qu\u00e1 tr\u00ecnh h\u1ecdc b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng l\u1ec7nh UPDATE tr\u00ean MCM.<\/p>\n<p>S\u1eed d\u1ee5ng t\u00edn hi\u1ec7u \u0111i\u1ec7n \u00e1p v\u00e0 d\u00f2ng \u0111i\u1ec7n 3 ph, MCM c\u0169ng t\u00ednh to\u00e1n m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c tham s\u1ed1 v\u1eadt l\u00fd nh\u01b0 gi\u00e1 tr\u1ecb rms c\u1ee7a \u0111i\u1ec7n \u00e1p v\u00e0 d\u00f2ng \u0111i\u1ec7n 3 pha, hi\u1ec7u s\u1ed1 c\u00f4ng su\u1ea5t\u2026T\u1eadp h\u1ee3p c\u00e1c tham s\u1ed1 n\u00e0y c\u0169ng bao g\u1ed3m c\u00e1c tham s\u1ed1 nh\u01b0 t\u1ed5ng m\u00e9o h\u00e0i, n\u1ed9i dung h\u00e0i c\u1ee7a t\u00edn hi\u1ec7u cung c\u1ea5p v\u00e0 s\u1ef1 thi\u1ebfu c\u00e2n b\u1eb1ng \u0111i\u1ec7n \u00e1p, qua \u0111\u00f3 bi\u1ec3u h\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng \u0111i\u1ec7n \u00e1p cung c\u1ea5p. C\u00e1c tham s\u1ed1 c\u00f4ng su\u1ea5t v\u00e0 c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng trong t\u1eadp c\u00e1c tham s\u1ed1 n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u01b0\u1edbc l\u01b0\u1ee3ng \u0111i\u1ec7n n\u0103ng ti\u00eau th\u1ee5. Do \u0111\u00f3, ch\u1ec9 tr\u00ean 1 thi\u1ebft b\u1ecb \u0111\u00e3 bao g\u1ed3m nhi\u1ec1u th\u00f4ng s\u1ed1 v\u1eadt l\u00fd c\u00f3 \u00edch cho c\u1ea3 nh\u00e0 v\u1eadn h\u00e0nh s\u1ea3n xu\u1ea5t v\u00e0 b\u1ea3o tr\u00ec.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3871 aligncenter\" src=\"http:\/\/mese.vn\/wp-content\/uploads\/2019\/03\/mcm-unit.png\" alt=\"\" width=\"124\" height=\"123\" \/><\/p>\n<p style=\"text-align: center;\">H\u00ecnh 2: B\u1ed9 theo d\u00f5i t\u00ecnh tr\u1ea1ng \u0111\u1ed9ng c\u01a1 MCM<\/p>\n<p>Thi\u1ebft b\u1ecb MCM \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t d\u01b0\u1edbi d\u1ea1ng 1 thi\u1ebft b\u1ecb d\u1ea1ng h\u1ed9p nh\u1ecf, ph\u00f9 h\u1ee3p cho vi\u1ec7c l\u1eafp \u0111\u1eb7t tr\u00ean c\u00e1c b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9ng c\u01a1 (H\u00ecnh 2). Nh\u1eefng th\u00f4ng s\u1ed1 v\u1eadt l\u00fd \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb tr\u00ean m\u00e0n h\u00ecnh LCD c\u1ee7a thi\u1ebft b\u1ecb c\u0169ng nh\u01b0 t\u00ecnh tr\u1ea1ng c\u1ee7a h\u1ec7 th\u1ed1ng truy\u1ec1n \u0111\u1ed9ng \u0111i\u1ec7n, tr\u00ean c\u1ea3 m\u00e0n h\u00ecnh LCD v\u00e0 c\u00e1c LED \u1edf m\u1eb7t tr\u01b0\u1edbc c\u1ee7a thi\u1ebft b\u1ecb.<\/p>\n<h2>Li\u00ean h\u1ec7<\/h2>\n<p>Hi\u1ec7n t\u1ea1i MES Engineering Vi\u1ec7t Nam l\u00e0 nh\u00e0 ph\u00e2n ph\u1ed1i \u0111\u1ed9c quy\u1ec1n c\u1ee7a Artesis t\u1ea1i th\u1ecb tr\u01b0\u1eddng Vi\u1ec7t Nam, kh\u00e1ch h\u00e0ng c\u00f3 nhu c\u1ea7u tri\u1ec3n khai gi\u1ea3i ph\u00e1p n\u00e0y xin li\u00ean h\u1ec7:<\/p>\n<ul>\n<li>C\u00f4ng ty C\u1ed5 ph\u1ea7n MES Engineering Vi\u1ec7t Nam<\/li>\n<li>\u0110\u1ecba ch\u1ec9: Ph\u00f2ng 301, s\u1ed1 88 Ph\u1ea1m Ng\u1ecdc Th\u1ea1ch, \u0110\u1ed1ng \u0110a, H\u00e0 N\u1ed9i<\/li>\n<li>S\u1ed1 \u0111i\u1ec7n tho\u1ea1i: (84) 0913039986<\/li>\n<\/ul>\n<h2><strong>Tham kh\u1ea3o<\/strong><\/h2>\n<p>[1] D. R. Bell, \u201dThe Hidden Cost of Downtime : Strategies for Improving Return on Assets,\u201d SmartSignal Co., USA, 2003.<br \/>\n[2] Nandi, S. and Toliyat, H.A., \u201cCondition Monitoring and Fault Diagnosis of Electrical Mchines- A<br \/>\nReview,\u201d 1999.<br \/>\n[3] A. Duyar and W. C. Merrill, \u201dFault Diagnosis For the Space Shuttle Main Engine,\u201d AIAA Journal of<br \/>\nGuidance, Control and Dynamics, vol. 15, no. 2, pp. 384-389, 1992.<br \/>\n[4] A. Duyar, V. Eldem, W. C. Merrill, and T. Guo, \u201cFault Detection and Diagnosis in Propulsion<br \/>\nSystems: A Fault Parameter Estimation Approach,\u201d AIAA Journal of Guidance, Control and Dynamics,<br \/>\nvol. 17, no. 1, pp. 104-108, 1994.<br \/>\n[5] J. Litt, M. Kurtkaya, and A. Duyar, \u201dSensor Fault Detection and Diagnosis of the T700 Turboshaft<br \/>\nEngine,\u201d AIAA Journal of Guidance, Control and Dynamics, vol. 187, no. 3, pp. 640-642, 1995.<br \/>\n[6] J. L. Musgrave, T. Guo, E. Wong, and A. Duyar, \u201cReal-Time Accommodation of Actuator Faults on<br \/>\na Reusable Rocket Engine,\u201d IEEE Trans. Cont. Syst. Technol., vol. 5, no. 1, pp. 100-109, Jan. 1997.<br \/>\n[7] Editors\u2019 Choice Award, 40 Best Products of 2000, Control Engineering Magazine, USA, 2001.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Kh\u00e1i qu\u00e1t B\u00e0i b\u00e1o n\u00e0y tr\u00ecnh b\u00e0y v\u1ec1 m\u1ed9t s\u1ea3n ph\u1ea9m\/gi\u1ea3i ph\u00e1p \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn v\u00e0 \u0111\u00e1nh gi\u00e1 cao: Gi\u1ea3i ph\u00e1p gi\u00e1m s\u00e1t t\u00ecnh tr\u1ea1ng \u0111\u1ed9ng c\u01a1 (MCM), \u0111\u1ec3 d\u1ef1 \u0111o\u00e1n b\u1ea3o d\u01b0\u1ee1ng h\u1ec7 th\u1ed1ng ba pha, bao g\u1ed3m \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n, m\u00e1y ph\u00e1t \u0111i\u1ec7n, m\u00e1y bi\u1ebfn th\u1ebf v\u00e0 c\u00e1c thi\u1ebft b\u1ecb ho\u1eb7c qu\u00e1 &hellip; <a href=\"https:\/\/tofu.isoinaction.com\/mesevn\/vi\/mcm-phuong-phap-theo-doi-tinh-trang-dong-co-dua-tren-mo-hinh-toan-hoc.html\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">MCM: PH\u01af\u01a0NG PH\u00c1P THEO D\u00d5I T\u00ccNH TR\u1ea0NG \u0110\u1ed8NG C\u01a0 D\u1ef0A TR\u00caN M\u00d4 H\u00ccNH TO\u00c1N H\u1eccC<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":120142,"featured_media":3768,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[106,42],"tags":[1380,1382,1376,1378],"class_list":["post-3869","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc-vi","category-tin-chuyen-nganh","tag-bao-tri-du-bao","tag-cong-nghiep-4-0","tag-motor-condition-monitoring","tag-theo-doi-tinh-trang-dong-co"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.5 (Yoast SEO v28.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>MCM: PH\u01af\u01a0NG PH\u00c1P THEO D\u00d5I T\u00ccNH TR\u1ea0NG \u0110\u1ed8NG C\u01a0 D\u1ef0A TR\u00caN M\u00d4 H\u00ccNH 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