{"id":43051,"date":"2024-11-21T15:28:25","date_gmt":"2024-11-21T20:28:25","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/keeping-time-with-precision-piezoceramics-in-electronic-oscillators\/"},"modified":"2025-01-21T07:25:25","modified_gmt":"2025-01-21T12:25:25","slug":"keeping-time-with-precision-piezoceramics-in-electronic-oscillators","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/keeping-time-with-precision-piezoceramics-in-electronic-oscillators\/","title":{"rendered":"\u0110\u1ed3ng h\u1ed3 g\u1ed1m \u00e1p \u0111i\u1ec7n: \u0110\u1ed9 ch\u00ednh x\u00e1c v\u01b0\u1ee3t tr\u1ed9i"},"content":{"rendered":"<p>Vi\u1ec7c \u0111o th\u1eddi gian ch\u00ednh x\u00e1c l\u00e0 y\u1ebfu t\u1ed1 c\u1ed1t l\u00f5i trong nhi\u1ec1u \u1ee9ng d\u1ee5ng \u0111i\u1ec7n t\u1eed, t\u1eeb \u0111\u1ed3ng h\u1ed3 \u0111eo tay \u0111\u1ebfn c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u1ecbnh v\u1ecb to\u00e0n c\u1ea7u. Trong khi th\u1ea1ch anh \u0111\u00e3 th\u1ed1ng tr\u1ecb l\u0129nh v\u1ef1c n\u00e0y trong m\u1ed9t th\u1eddi gian d\u00e0i, g\u1ed1m \u00e1p \u0111i\u1ec7n (piezoceramics) \u0111ang n\u1ed5i l\u00ean nh\u01b0 m\u1ed9t gi\u1ea3i ph\u00e1p thay th\u1ebf \u0111\u1ea7y h\u1ee9a h\u1eb9n, \u0111\u1eb7c bi\u1ec7t trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi \u0111\u1ed9 ch\u00ednh x\u00e1c cao, k\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111i s\u00e2u v\u00e0o vi\u1ec7c s\u1eed d\u1ee5ng g\u1ed1m \u00e1p \u0111i\u1ec7n trong c\u00e1c b\u1ed9 dao \u0111\u1ed9ng \u0111i\u1ec7n t\u1eed \u0111\u1ec3 gi\u1eef th\u1eddi gian ch\u00ednh x\u00e1c, ph\u00e2n t\u00edch \u01b0u \u0111i\u1ec3m, nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng ti\u1ec1m n\u0103ng c\u1ee7a c\u00f4ng ngh\u1ec7 n\u00e0y.<\/p>\n<h3>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a g\u1ed1m \u00e1p \u0111i\u1ec7n trong b\u1ed9 dao \u0111\u1ed9ng<\/h3>\n<p>G\u1ed1m \u00e1p \u0111i\u1ec7n c\u00f3 kh\u1ea3 n\u0103ng 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 d\u1ee5ng m\u1ed9t \u0111i\u1ec7n \u00e1p v\u00e0o v\u1eadt li\u1ec7u g\u1ed1m \u00e1p \u0111i\u1ec7n, n\u00f3 s\u1ebd thay \u0111\u1ed5i h\u00ecnh d\u1ea1ng. Ng\u01b0\u1ee3c l\u1ea1i, khi t\u00e1c d\u1ee5ng m\u1ed9t l\u1ef1c c\u01a1 h\u1ecdc, v\u1eadt li\u1ec7u s\u1ebd t\u1ea1o ra \u0111i\u1ec7n \u00e1p. Hi\u1ec7u \u1ee9ng n\u00e0y \u0111\u01b0\u1ee3c khai th\u00e1c trong b\u1ed9 dao \u0111\u1ed9ng b\u1eb1ng c\u00e1ch t\u1ea1o ra m\u1ed9t m\u1ea1ch ph\u1ea3n h\u1ed3i, trong \u0111\u00f3 g\u1ed1m \u00e1p \u0111i\u1ec7n v\u1eeba \u0111\u00f3ng vai tr\u00f2 l\u00e0 b\u1ed9 c\u1ed9ng h\u01b0\u1edfng c\u01a1 h\u1ecdc v\u1eeba l\u00e0 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u0111i\u1ec7n-c\u01a1. T\u1ea7n s\u1ed1 dao \u0111\u1ed9ng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi c\u00e1c \u0111\u1eb7c t\u00ednh v\u1eadt l\u00fd c\u1ee7a g\u1ed1m, bao g\u1ed3m h\u00ecnh d\u1ea1ng, k\u00edch th\u01b0\u1edbc v\u00e0 th\u00e0nh ph\u1ea7n v\u1eadt li\u1ec7u.<\/p>\n<h3>\u01afu \u0111i\u1ec3m c\u1ee7a g\u1ed1m \u00e1p \u0111i\u1ec7n so v\u1edbi th\u1ea1ch anh<\/h3>\n<p>G\u1ed1m \u00e1p \u0111i\u1ec7n mang l\u1ea1i m\u1ed9t s\u1ed1 l\u1ee3i th\u1ebf so v\u1edbi th\u1ea1ch anh trong vi\u1ec7c gi\u1eef th\u1eddi gian:<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>\u0110\u1eb7c t\u00ednh<\/th>\n<th>G\u1ed1m \u00e1p \u0111i\u1ec7n<\/th>\n<th>Th\u1ea1ch anh<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0110\u1ed9 nh\u1ea1y<\/td>\n<td>Cao<\/td>\n<td>Th\u1ea5p<\/td>\n<\/tr>\n<tr>\n<td>K\u00edch th\u01b0\u1edbc<\/td>\n<td>Nh\u1ecf g\u1ecdn<\/td>\n<td>L\u1edbn h\u01a1n<\/td>\n<\/tr>\n<tr>\n<td>Kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng m\u00f4i tr\u01b0\u1eddng<\/td>\n<td>T\u1ed1t h\u01a1n<\/td>\n<td>K\u00e9m h\u01a1n<\/td>\n<\/tr>\n<tr>\n<td>Gi\u00e1 th\u00e0nh<\/td>\n<td>Th\u1ea5p h\u01a1n<\/td>\n<td>Cao h\u01a1n<\/td>\n<\/tr>\n<tr>\n<td>T\u1ea7n s\u1ed1 dao \u0111\u1ed9ng<\/td>\n<td>Linh ho\u1ea1t<\/td>\n<td>H\u1ea1n ch\u1ebf<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u1ee8ng d\u1ee5ng c\u1ee7a g\u1ed1m \u00e1p \u0111i\u1ec7n trong vi\u1ec7c gi\u1eef th\u1eddi gian<\/h3>\n<p>G\u1ed1m \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi \u0111\u1ed9 ch\u00ednh x\u00e1c th\u1eddi gian cao, bao g\u1ed3m:<\/p>\n<ul>\n<li>\u0110\u1ed3ng h\u1ed3 \u0111i\u1ec7n t\u1eed<\/li>\n<li>H\u1ec7 th\u1ed1ng \u0111\u1ecbnh v\u1ecb<\/li>\n<li>Thi\u1ebft b\u1ecb y t\u1ebf<\/li>\n<li>H\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n c\u00f4ng nghi\u1ec7p<\/li>\n<li>C\u00e1c \u1ee9ng d\u1ee5ng IoT<\/li>\n<\/ul>\n<h3>Nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 h\u1ea1n ch\u1ebf<\/h3>\n<p>M\u1eb7c d\u00f9 c\u00f3 nhi\u1ec1u \u01b0u \u0111i\u1ec3m, g\u1ed1m \u00e1p \u0111i\u1ec7n c\u0169ng c\u00f3 m\u1ed9t s\u1ed1 h\u1ea1n ch\u1ebf c\u1ea7n \u0111\u01b0\u1ee3c xem x\u00e9t:<\/p>\n<ul>\n<li>\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t \u0111\u1ed9: G\u1ed1m \u00e1p \u0111i\u1ec7n c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9, d\u1eabn \u0111\u1ebfn sai s\u1ed1 th\u1eddi gian.<\/li>\n<li>L\u00e3o h\u00f3a: Hi\u1ec7u su\u1ea5t c\u1ee7a g\u1ed1m \u00e1p \u0111i\u1ec7n c\u00f3 th\u1ec3 gi\u1ea3m d\u1ea7n theo th\u1eddi gian.<\/li>\n<li>\u0110\u1ed9 ph\u1ee9c t\u1ea1p trong thi\u1ebft k\u1ebf m\u1ea1ch: Vi\u1ec7c thi\u1ebft k\u1ebf m\u1ea1ch dao \u0111\u1ed9ng v\u1edbi g\u1ed1m \u00e1p \u0111i\u1ec7n c\u00f3 th\u1ec3 ph\u1ee9c t\u1ea1p h\u01a1n so v\u1edbi th\u1ea1ch anh.<\/li>\n<\/ul>\n<h3>C\u00e1c k\u1ef9 thu\u1eadt c\u1ea3i thi\u1ec7n \u0111\u1ed9 ch\u00ednh x\u00e1c<\/h3>\n<p>Nhi\u1ec1u k\u1ef9 thu\u1eadt \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n \u0111\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a b\u1ed9 dao \u0111\u1ed9ng g\u1ed1m \u00e1p \u0111i\u1ec7n, bao g\u1ed3m:<\/p>\n<ul>\n<li>B\u00f9 nhi\u1ec7t \u0111\u1ed9: S\u1eed d\u1ee5ng c\u00e1c m\u1ea1ch b\u00f9 nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec3 gi\u1ea3m thi\u1ec3u \u1ea3nh h\u01b0\u1edfng c\u1ee7a s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9.<\/li>\n<li>L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u: S\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i g\u1ed1m \u00e1p \u0111i\u1ec7n c\u00f3 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh cao.<\/li>\n<li>K\u1ef9 thu\u1eadt ki\u1ec3m so\u00e1t dao \u0111\u1ed9ng ti\u00ean ti\u1ebfn.<\/li>\n<\/ul>\n<p>T\u00f3m l\u1ea1i, g\u1ed1m \u00e1p \u0111i\u1ec7n l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn h\u1ea5p d\u1eabn cho vi\u1ec7c gi\u1eef th\u1eddi gian ch\u00ednh x\u00e1c trong c\u00e1c b\u1ed9 dao \u0111\u1ed9ng \u0111i\u1ec7n t\u1eed, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi k\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn, \u0111\u1ed9 nh\u1ea1y cao v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.  M\u1eb7c d\u00f9 c\u00f2n t\u1ed3n t\u1ea1i m\u1ed9t s\u1ed1 h\u1ea1n ch\u1ebf, nh\u01b0ng v\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n kh\u00f4ng ng\u1eebng c\u1ee7a c\u00f4ng ngh\u1ec7 v\u1eadt li\u1ec7u v\u00e0 k\u1ef9 thu\u1eadt thi\u1ebft k\u1ebf m\u1ea1ch, g\u1ed1m \u00e1p \u0111i\u1ec7n h\u1ee9a h\u1eb9n s\u1ebd \u0111\u00f3ng vai tr\u00f2 ng\u00e0y c\u00e0ng quan tr\u1ecdng trong l\u0129nh v\u1ef1c \u0111o th\u1eddi gian ch\u00ednh x\u00e1c.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vi\u1ec7c \u0111o th\u1eddi gian ch\u00ednh x\u00e1c l\u00e0 y\u1ebfu t\u1ed1 c\u1ed1t l\u00f5i trong nhi\u1ec1u \u1ee9ng d\u1ee5ng \u0111i\u1ec7n t\u1eed, t\u1eeb \u0111\u1ed3ng h\u1ed3 \u0111eo tay \u0111\u1ebfn c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u1ecbnh v\u1ecb to\u00e0n c\u1ea7u. Trong khi th\u1ea1ch anh \u0111\u00e3 th\u1ed1ng tr\u1ecb l\u0129nh v\u1ef1c n\u00e0y trong m\u1ed9t th\u1eddi gian d\u00e0i, g\u1ed1m \u00e1p \u0111i\u1ec7n (piezoceramics) \u0111ang n\u1ed5i l\u00ean nh\u01b0 m\u1ed9t gi\u1ea3i<\/p>\n","protected":false},"author":1,"featured_media":23780,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-43051","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\/43051","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=43051"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/43051\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/23780"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=43051"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=43051"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=43051"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}