{"id":43812,"date":"2023-04-25T16:51:42","date_gmt":"2023-04-25T21:51:42","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/what-are-piezoelectric-actuators\/"},"modified":"2025-01-21T07:27:00","modified_gmt":"2025-01-21T12:27:00","slug":"what-are-piezoelectric-actuators","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/what-are-piezoelectric-actuators\/","title":{"rendered":"Hi\u1ec3u v\u1ec1 C\u01a1 c\u1ea5u ch\u1ea5p h\u00e0nh \u00e1p \u0111i\u1ec7n"},"content":{"rendered":"<p>Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd th\u00fa v\u1ecb, n\u01a1i m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u t\u1ea1o ra \u0111i\u1ec7n \u00e1p khi ch\u1ecbu \u00e1p l\u1ef1c c\u01a1 h\u1ecdc. Ng\u01b0\u1ee3c l\u1ea1i, ch\u00fang c\u0169ng bi\u1ebfn d\u1ea1ng khi \u0111\u1eb7t d\u01b0\u1edbi \u0111i\u1ec7n tr\u01b0\u1eddng. Ch\u00ednh kh\u1ea3 n\u0103ng chuy\u1ec3n \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 n\u00e0y \u0111\u00e3 t\u1ea1o n\u00ean n\u1ec1n t\u1ea3ng cho s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb truy\u1ec1n \u0111\u1ed9ng \u00e1p \u0111i\u1ec7n, hay c\u00f2n g\u1ecdi l\u00e0 b\u1ed9 truy\u1ec1n \u0111\u1ed9ng \u00e1p \u0111i\u1ec7n.  Nh\u1eefng thi\u1ebft b\u1ecb nh\u1ecf g\u1ecdn nh\u01b0ng m\u1ea1nh m\u1ebd n\u00e0y \u0111ang ng\u00e0y c\u00e0ng \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c, t\u1eeb c\u00f4ng ngh\u1ec7 y t\u1ebf \u0111\u1ebfn c\u00f4ng ngh\u1ec7 h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/p>\n<h3>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 truy\u1ec1n \u0111\u1ed9ng \u00e1p \u0111i\u1ec7n<\/h3>\n<p>B\u1ed9 truy\u1ec1n \u0111\u1ed9ng \u00e1p \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n ngh\u1ecbch \u0111\u1ea3o. Khi m\u1ed9t \u0111i\u1ec7n tr\u01b0\u1eddng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng l\u00ean v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n (th\u01b0\u1eddng l\u00e0 g\u1ed1m \u00e1p \u0111i\u1ec7n nh\u01b0 PZT &#8211; ch\u00ec zirconat titanat), n\u00f3 s\u1ebd l\u00e0m thay \u0111\u1ed5i k\u00edch th\u01b0\u1edbc c\u1ee7a v\u1eadt li\u1ec7u. S\u1ef1 thay \u0111\u1ed5i k\u00edch th\u01b0\u1edbc n\u00e0y, m\u1eb7c d\u00f9 r\u1ea5t nh\u1ecf, c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c khu\u1ebfch \u0111\u1ea1i b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c thi\u1ebft k\u1ebf c\u01a1 h\u1ecdc kh\u00e1c nhau \u0111\u1ec3 t\u1ea1o ra chuy\u1ec3n \u0111\u1ed9ng c\u00f3 th\u1ec3 \u0111o l\u01b0\u1eddng v\u00e0 \u0111i\u1ec1u khi\u1ec3n \u0111\u01b0\u1ee3c.  \u0110i\u1ec7n \u00e1p \u0111\u1eb7t v\u00e0o c\u00e0ng cao, bi\u1ebfn d\u1ea1ng c\u1ee7a v\u1eadt li\u1ec7u c\u00e0ng l\u1edbn, v\u00e0 do \u0111\u00f3, chuy\u1ec3n \u0111\u1ed9ng t\u1ea1o ra c\u00e0ng l\u1edbn.<\/p>\n<h3>C\u00e1c lo\u1ea1i b\u1ed9 truy\u1ec1n \u0111\u1ed9ng \u00e1p \u0111i\u1ec7n<\/h3>\n<p>C\u00f3 nhi\u1ec1u lo\u1ea1i b\u1ed9 truy\u1ec1n \u0111\u1ed9ng \u00e1p \u0111i\u1ec7n kh\u00e1c nhau, m\u1ed7i lo\u1ea1i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3. M\u1ed9t s\u1ed1 lo\u1ea1i ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>B\u1ed9 truy\u1ec1n \u0111\u1ed9ng x\u1ebfp ch\u1ed3ng:<\/strong>  Nhi\u1ec1u l\u1edbp v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n m\u1ecfng \u0111\u01b0\u1ee3c x\u1ebfp ch\u1ed3ng l\u00ean nhau \u0111\u1ec3 t\u1ea1o ra chuy\u1ec3n \u0111\u1ed9ng l\u1edbn h\u01a1n theo h\u01b0\u1edbng d\u1ecdc. Lo\u1ea1i n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi l\u1ef1c l\u1edbn v\u00e0 \u0111\u1ed9 d\u1ecbch chuy\u1ec3n nh\u1ecf.<\/li>\n<li><strong>B\u1ed9 truy\u1ec1n \u0111\u1ed9ng d\u1ea1ng \u1ed1ng:<\/strong>  \u0110\u01b0\u1ee3c ch\u1ebf t\u1ea1o d\u01b0\u1edbi d\u1ea1ng \u1ed1ng r\u1ed7ng, cho ph\u00e9p chuy\u1ec3n \u0111\u1ed9ng theo c\u1ea3 h\u01b0\u1edbng d\u1ecdc v\u00e0 h\u01b0\u1edbng xuy\u00ean t\u00e2m.<\/li>\n<li><strong>B\u1ed9 truy\u1ec1n \u0111\u1ed9ng d\u1ea1ng \u0111\u0129a:<\/strong>  C\u00f3 h\u00ecnh d\u1ea1ng \u0111\u0129a tr\u00f2n v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng t\u1ea1o dao \u0111\u1ed9ng v\u00e0 s\u00f3ng si\u00eau \u00e2m.  V\u00ed d\u1ee5, trong m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng l\u00e0m s\u1ea1ch b\u1eb1ng si\u00eau \u00e2m.<\/li>\n<\/ul>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Lo\u1ea1i b\u1ed9 truy\u1ec1n \u0111\u1ed9ng<\/th>\n<th>\u01afu \u0111i\u1ec3m<\/th>\n<th>Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/th>\n<th>\u1ee8ng d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>X\u1ebfp ch\u1ed3ng<\/td>\n<td>L\u1ef1c l\u1edbn, \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao<\/td>\n<td>\u0110\u1ed9 d\u1ecbch chuy\u1ec3n nh\u1ecf<\/td>\n<td>\u0110\u1ecbnh v\u1ecb ch\u00ednh x\u00e1c, van \u0111i\u1ec1u khi\u1ec3n<\/td>\n<\/tr>\n<tr>\n<td>\u1ed0ng<\/td>\n<td>Chuy\u1ec3n \u0111\u1ed9ng hai chi\u1ec1u<\/td>\n<td>\u0110\u1ed9 c\u1ee9ng th\u1ea5p<\/td>\n<td>\u0110\u1ea7u d\u00f2 qu\u00e9t, b\u01a1m vi l\u1ecfng<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u0129a<\/td>\n<td>T\u1ea1o dao \u0111\u1ed9ng hi\u1ec7u qu\u1ea3<\/td>\n<td>\u0110\u1ed9 d\u1ecbch chuy\u1ec3n nh\u1ecf<\/td>\n<td>T\u1ea1o s\u00f3ng si\u00eau \u00e2m, c\u1ea3m bi\u1ebfn<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u1ee8ng d\u1ee5ng c\u1ee7a b\u1ed9 truy\u1ec1n \u0111\u1ed9ng \u00e1p \u0111i\u1ec7n<\/h3>\n<p>T\u00ednh linh ho\u1ea1t v\u00e0 kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c c\u1ee7a b\u1ed9 truy\u1ec1n \u0111\u1ed9ng \u00e1p \u0111i\u1ec7n \u0111\u00e3 m\u1edf ra c\u00e1nh c\u1eeda cho vi\u1ec7c \u1ee9ng d\u1ee5ng ch\u00fang trong nhi\u1ec1u l\u0129nh v\u1ef1c:<\/p>\n<ul>\n<li><strong>C\u00f4ng ngh\u1ec7 y t\u1ebf:<\/strong>  Trong ph\u1eabu thu\u1eadt n\u1ed9i soi, vi ph\u1eabu, v\u00e0 c\u00e1c thi\u1ebft b\u1ecb ch\u1ea9n \u0111o\u00e1n h\u00ecnh \u1ea3nh.<\/li>\n<li><strong>C\u00f4ng nghi\u1ec7p \u00f4 t\u00f4:<\/strong>  Trong h\u1ec7 th\u1ed1ng phun nhi\u00ean li\u1ec7u v\u00e0 h\u1ec7 th\u1ed1ng gi\u1ea3m x\u00f3c ch\u1ee7 \u0111\u1ed9ng.<\/li>\n<li><strong>Khoa h\u1ecdc v\u0169 tr\u1ee5:<\/strong>  Trong c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u1ecbnh v\u1ecb v\u00e0 \u0111i\u1ec1u khi\u1ec3n ch\u00ednh x\u00e1c c\u1ee7a k\u00ednh thi\u00ean v\u0103n v\u00e0 v\u1ec7 tinh.<\/li>\n<li><strong>\u0110i\u1ec7n t\u1eed ti\u00eau d\u00f9ng:<\/strong>  Trong \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng, m\u00e1y in phun, v\u00e0 \u1ed5 c\u1ee9ng.<\/li>\n<li><strong>C\u00f4ng ngh\u1ec7 si\u00eau \u00e2m:<\/strong> M\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb si\u00eau \u00e2m s\u1eed d\u1ee5ng b\u1ed9 truy\u1ec1n \u0111\u1ed9ng \u00e1p \u0111i\u1ec7n \u0111\u1ec3 t\u1ea1o ra s\u00f3ng si\u00eau \u00e2m.<\/li>\n<\/ul>\n<h3>\u01afu \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a b\u1ed9 truy\u1ec1n \u0111\u1ed9ng \u00e1p \u0111i\u1ec7n<\/h3>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>\u01afu \u0111i\u1ec3m<\/th>\n<th>Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0110\u1ed9 ch\u00ednh x\u00e1c cao<\/td>\n<td>Gi\u00e1 th\u00e0nh t\u01b0\u01a1ng \u0111\u1ed1i cao<\/td>\n<\/tr>\n<tr>\n<td>Th\u1eddi gian \u0111\u00e1p \u1ee9ng nhanh<\/td>\n<td>\u0110\u1ed9 d\u1ecbch chuy\u1ec3n nh\u1ecf<\/td>\n<\/tr>\n<tr>\n<td>K\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn<\/td>\n<td>\u1ea2nh h\u01b0\u1edfng b\u1edfi nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111\u1ed9 \u1ea9m<\/td>\n<\/tr>\n<tr>\n<td>L\u1ef1c l\u1edbn so v\u1edbi k\u00edch th\u01b0\u1edbc<\/td>\n<td><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>T\u00f3m l\u1ea1i, b\u1ed9 truy\u1ec1n \u0111\u1ed9ng \u00e1p \u0111i\u1ec7n l\u00e0 nh\u1eefng thi\u1ebft b\u1ecb \u0111a n\u0103ng v\u1edbi kh\u1ea3 n\u0103ng chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u00e0nh n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 v\u00e0 ch\u00ednh x\u00e1c.  S\u1ef1 ph\u00e1t tri\u1ec3n kh\u00f4ng ng\u1eebng c\u1ee7a c\u00f4ng ngh\u1ec7 v\u1eadt li\u1ec7u v\u00e0 thi\u1ebft k\u1ebf c\u01a1 kh\u00ed \u0111ang m\u1edf ra nh\u1eefng ti\u1ec1m n\u0103ng \u1ee9ng d\u1ee5ng to l\u1edbn h\u01a1n n\u1eefa cho b\u1ed9 truy\u1ec1n \u0111\u1ed9ng \u00e1p \u0111i\u1ec7n trong t\u01b0\u01a1ng lai, \u0111\u00f3ng g\u00f3p v\u00e0o s\u1ef1 ti\u1ebfn b\u1ed9 c\u1ee7a khoa h\u1ecdc v\u00e0 c\u00f4ng ngh\u1ec7.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd th\u00fa v\u1ecb, n\u01a1i m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u t\u1ea1o ra \u0111i\u1ec7n \u00e1p khi ch\u1ecbu \u00e1p l\u1ef1c c\u01a1 h\u1ecdc. Ng\u01b0\u1ee3c l\u1ea1i, ch\u00fang c\u0169ng bi\u1ebfn d\u1ea1ng khi \u0111\u1eb7t d\u01b0\u1edbi \u0111i\u1ec7n tr\u01b0\u1eddng. Ch\u00ednh kh\u1ea3 n\u0103ng chuy\u1ec3n \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 n\u00e0y<\/p>\n","protected":false},"author":1,"featured_media":26480,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-43812","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\/43812","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=43812"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/43812\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/26480"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=43812"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=43812"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=43812"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}