{"id":45068,"date":"2023-04-22T03:05:02","date_gmt":"2023-04-22T08:05:02","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-to-create-ultrasonic-vibrations\/"},"modified":"2025-01-21T07:15:27","modified_gmt":"2025-01-21T12:15:27","slug":"how-to-create-ultrasonic-vibrations","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/how-to-create-ultrasonic-vibrations\/","title":{"rendered":"T\u1ea1o ra s\u00f3ng si\u00eau \u00e2m: Ph\u01b0\u01a1ng ph\u00e1p v\u00e0 \u1ee9ng d\u1ee5ng"},"content":{"rendered":"<p>Si\u00eau \u00e2m, v\u1edbi t\u1ea7n s\u1ed1 v\u01b0\u1ee3t qu\u00e1 ng\u01b0\u1ee1ng nghe c\u1ee7a con ng\u01b0\u1eddi, \u0111\u00e3 v\u00e0 \u0111ang \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c, t\u1eeb y t\u1ebf, c\u00f4ng nghi\u1ec7p \u0111\u1ebfn \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y. Vi\u1ec7c t\u1ea1o ra c\u00e1c dao \u0111\u1ed9ng si\u00eau \u00e2m \u0111\u00f2i h\u1ecfi s\u1ef1 hi\u1ec3u bi\u1ebft v\u1ec1 nguy\u00ean l\u00fd v\u1eadt l\u00fd v\u00e0 k\u1ef9 thu\u1eadt chuy\u00ean bi\u1ec7t. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111i s\u00e2u v\u00e0o c\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u1ea1o ra dao \u0111\u1ed9ng si\u00eau \u00e2m, c\u00f9ng v\u1edbi nh\u1eefng \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a t\u1eebng ph\u01b0\u01a1ng ph\u00e1p.<\/p>\n<h3>S\u1eed d\u1ee5ng hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n<\/h3>\n<p>Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n l\u00e0 kh\u1ea3 n\u0103ng c\u1ee7a m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u, nh\u01b0 th\u1ea1ch anh, g\u1ed1m \u00e1p \u0111i\u1ec7n (PZT),  bi\u1ebfn \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc th\u00e0nh n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. Khi \u00e1p m\u1ed9t \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u v\u00e0o v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n, n\u00f3 s\u1ebd dao \u0111\u1ed9ng v\u1edbi t\u1ea7n s\u1ed1 c\u1ee7a \u0111i\u1ec7n \u00e1p \u0111\u00f3.  B\u1eb1ng c\u00e1ch \u0111i\u1ec1u ch\u1ec9nh t\u1ea7n s\u1ed1 \u0111i\u1ec7n \u00e1p, ta c\u00f3 th\u1ec3 t\u1ea1o ra dao \u0111\u1ed9ng si\u00eau \u00e2m. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i do t\u00ednh hi\u1ec7u qu\u1ea3, \u0111\u1ed9 ch\u00ednh x\u00e1c cao v\u00e0 kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t t\u1ea7n s\u1ed1 d\u1ec5 d\u00e0ng.<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>\u0110\u1eb7c \u0111i\u1ec3m<\/th>\n<th>\u01afu \u0111i\u1ec3m<\/th>\n<th>Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Hi\u1ec7u su\u1ea5t<\/td>\n<td>Cao<\/td>\n<td>Gi\u00e1 th\u00e0nh v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 cao<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 ch\u00ednh x\u00e1c<\/td>\n<td>R\u1ea5t cao<\/td>\n<td>D\u1ec5 b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec7t \u0111\u1ed9<\/td>\n<\/tr>\n<tr>\n<td>T\u1ea7n s\u1ed1<\/td>\n<td>D\u1ec5 \u0111i\u1ec1u ch\u1ec9nh<\/td>\n<td>Kh\u00f3 t\u1ea1o ra c\u00f4ng su\u1ea5t l\u1edbn \u1edf t\u1ea7n s\u1ed1 r\u1ea5t cao<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>S\u1eed d\u1ee5ng hi\u1ec7u \u1ee9ng t\u1eeb gi\u1ea3o<\/h3>\n<p>Hi\u1ec7u \u1ee9ng t\u1eeb gi\u1ea3o l\u00e0 s\u1ef1 thay \u0111\u1ed5i k\u00edch th\u01b0\u1edbc c\u1ee7a v\u1eadt li\u1ec7u s\u1eaft t\u1eeb d\u01b0\u1edbi t\u00e1c d\u1ee5ng c\u1ee7a t\u1eeb tr\u01b0\u1eddng.  M\u1ed9t cu\u1ed9n d\u00e2y qu\u1ea5n quanh v\u1eadt li\u1ec7u s\u1eaft t\u1eeb \u0111\u01b0\u1ee3c c\u1ea5p d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u s\u1ebd t\u1ea1o ra t\u1eeb tr\u01b0\u1eddng bi\u1ebfn thi\u00ean, l\u00e0m v\u1eadt li\u1ec7u s\u1eaft t\u1eeb dao \u0111\u1ed9ng.  Tuy nhi\u00ean, hi\u1ec7u su\u1ea5t c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y th\u01b0\u1eddng th\u1ea5p h\u01a1n so v\u1edbi ph\u01b0\u01a1ng ph\u00e1p s\u1eed d\u1ee5ng hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n.<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>\u0110\u1eb7c \u0111i\u1ec3m<\/th>\n<th>\u01afu \u0111i\u1ec3m<\/th>\n<th>Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Hi\u1ec7u su\u1ea5t<\/td>\n<td>Th\u1ea5p<\/td>\n<td>T\u1ea7n s\u1ed1 gi\u1edbi h\u1ea1n<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 ch\u00ednh x\u00e1c<\/td>\n<td>Trung b\u00ecnh<\/td>\n<td>K\u00edch th\u01b0\u1edbc v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn<\/td>\n<\/tr>\n<tr>\n<td>T\u1ea7n s\u1ed1<\/td>\n<td>Kh\u00f3 \u0111i\u1ec1u ch\u1ec9nh<\/td>\n<td>D\u1ec5 b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi t\u1eeb tr\u01b0\u1eddng b\u00ean ngo\u00e0i<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>S\u1eed d\u1ee5ng hi\u1ec7u \u1ee9ng \u0111i\u1ec7n gi\u1ea3o<\/h3>\n<p>T\u01b0\u01a1ng t\u1ef1 nh\u01b0 hi\u1ec7u \u1ee9ng t\u1eeb gi\u1ea3o, hi\u1ec7u \u1ee9ng \u0111i\u1ec7n gi\u1ea3o l\u00e0 s\u1ef1 thay \u0111\u1ed5i k\u00edch th\u01b0\u1edbc c\u1ee7a v\u1eadt li\u1ec7u d\u01b0\u1edbi t\u00e1c d\u1ee5ng c\u1ee7a \u0111i\u1ec7n tr\u01b0\u1eddng.  Tuy nhi\u00ean, hi\u1ec7u \u1ee9ng n\u00e0y th\u01b0\u1eddng y\u1ebfu h\u01a1n hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n v\u00e0 \u00edt \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o ra dao \u0111\u1ed9ng si\u00eau \u00e2m.<\/p>\n<h3>S\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p c\u01a1 h\u1ecdc<\/h3>\n<p>M\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p c\u01a1 h\u1ecdc, nh\u01b0 s\u1eed d\u1ee5ng c\u00f2i Galton, c\u0169ng c\u00f3 th\u1ec3 t\u1ea1o ra dao \u0111\u1ed9ng si\u00eau \u00e2m. Tuy nhi\u00ean, t\u1ea7n s\u1ed1 v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a dao \u0111\u1ed9ng kh\u00f3 ki\u1ec3m so\u00e1t, n\u00ean ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u00edt \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong th\u1ef1c t\u1ebf.<\/p>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng ph\u00e1p t\u1ea1o dao \u0111\u1ed9ng si\u00eau \u00e2m ph\u1ee5 thu\u1ed9c v\u00e0o y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a t\u1eebng \u1ee9ng d\u1ee5ng.  Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n hi\u1ec7n \u0111ang l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ph\u1ed5 bi\u1ebfn nh\u1ea5t nh\u1edd t\u00ednh hi\u1ec7u qu\u1ea3, \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t t\u1ea7n s\u1ed1 t\u1ed1t.  Tuy nhi\u00ean,  c\u00e1c ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c v\u1eabn c\u00f3 nh\u1eefng \u1ee9ng d\u1ee5ng ri\u00eang bi\u1ec7t.  S\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00f4ng ngh\u1ec7 v\u1eadt li\u1ec7u v\u00e0 k\u1ef9 thu\u1eadt \u0111i\u1ec7n t\u1eed h\u1ee9a h\u1eb9n s\u1ebd mang \u0111\u1ebfn nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p t\u1ea1o dao \u0111\u1ed9ng si\u00eau \u00e2m m\u1edbi, hi\u1ec7u qu\u1ea3 v\u00e0 ch\u00ednh x\u00e1c h\u01a1n trong t\u01b0\u01a1ng lai.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Si\u00eau \u00e2m, v\u1edbi t\u1ea7n s\u1ed1 v\u01b0\u1ee3t qu\u00e1 ng\u01b0\u1ee1ng nghe c\u1ee7a con ng\u01b0\u1eddi, \u0111\u00e3 v\u00e0 \u0111ang \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c, t\u1eeb y t\u1ebf, c\u00f4ng nghi\u1ec7p \u0111\u1ebfn \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y. Vi\u1ec7c t\u1ea1o ra c\u00e1c dao \u0111\u1ed9ng si\u00eau \u00e2m \u0111\u00f2i h\u1ecfi s\u1ef1 hi\u1ec3u bi\u1ebft v\u1ec1 nguy\u00ean l\u00fd v\u1eadt l\u00fd v\u00e0 k\u1ef9 thu\u1eadt<\/p>\n","protected":false},"author":1,"featured_media":26461,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-45068","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/45068","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/comments?post=45068"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/45068\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/26461"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=45068"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=45068"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=45068"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}