{"id":61966,"date":"2023-04-21T13:12:24","date_gmt":"2023-04-21T18:12:24","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/diy-piezoelectric-actuator\/"},"modified":"2025-01-27T06:03:41","modified_gmt":"2025-01-27T11:03:41","slug":"diy-piezoelectric-actuator","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/cs\/diy-piezoelectric-actuator\/","title":{"rendered":"DIY Piezoelektrick\u00fd Aktu\u00e1tor: N\u00e1vod a Tipy"},"content":{"rendered":"<p>Piezoelektrick\u00e9 aktu\u00e1tory p\u0159edstavuj\u00ed fascinuj\u00edc\u00ed oblast DIY (Do It Yourself) projekt\u016f, kter\u00e1 umo\u017e\u0148uje vytv\u00e1\u0159et precizn\u00ed a rychl\u00e9 pohyby s vyu\u017eit\u00edm relativn\u011b jednoduch\u00fdch komponent.  Na rozd\u00edl od tradi\u010dn\u00edch motor\u016f, piezoelektrick\u00e9 aktu\u00e1tory vyu\u017e\u00edvaj\u00ed inverzn\u00ed piezoelektrick\u00fd efekt, kde mechanick\u00e1 deformace materi\u00e1lu je vyvol\u00e1na elektrick\u00fdm polem.  Tento princip umo\u017e\u0148uje dos\u00e1hnout velmi vysok\u00e9 p\u0159esnosti a rychlosti, co\u017e otev\u00edr\u00e1 dve\u0159e k \u0161irok\u00e9mu spektru aplikac\u00ed. Nicm\u00e9n\u011b, konstrukce DIY piezoelektrick\u00e9ho aktu\u00e1toru vy\u017eaduje pochopen\u00ed z\u00e1kladn\u00edch princip\u016f a pe\u010dlivou pr\u00e1ci.<\/p>\n<h3>V\u00fdb\u011br Piezoelektrick\u00e9ho Materi\u00e1lu<\/h3>\n<p>Nejd\u016fle\u017eit\u011bj\u0161\u00ed sou\u010d\u00e1st\u00ed ka\u017ed\u00e9ho piezoelektrick\u00e9ho aktu\u00e1toru je samotn\u00fd piezoelektrick\u00fd materi\u00e1l.  Nej\u010dast\u011bji se pou\u017e\u00edv\u00e1 PZT (zirkoni\u010ditan olovnato-titani\u010dit\u00fd), kter\u00fd se vyzna\u010duje vysok\u00fdm piezoelektrick\u00fdm koeficientem.  Dostupnost PZT keramiky v r\u016fzn\u00fdch tvarech a velikostech umo\u017e\u0148uje flexibiln\u00ed design aktu\u00e1toru.  Je v\u0161ak nutn\u00e9 br\u00e1t v \u00favahu jeho k\u0159ehkost a citlivost na mechanick\u00e9 nam\u00e1h\u00e1n\u00ed.  P\u0159i v\u00fdb\u011bru materi\u00e1lu je d\u016fle\u017eit\u00e9 zv\u00e1\u017eit po\u017eadovanou s\u00edlu, zdvih a frekvenci.<\/p>\n<h3>Design a Konstrukce Aktu\u00e1toru<\/h3>\n<p>Design piezoelektrick\u00e9ho aktu\u00e1toru z\u00e1vis\u00ed na zam\u00fd\u0161len\u00e9 aplikaci.  Jednoduch\u00fd aktu\u00e1tor m\u016f\u017ee sest\u00e1vat z jedin\u00e9 piezoelektrick\u00e9 desti\u010dky s p\u0159ipevn\u011bnou z\u00e1t\u011b\u017e\u00ed. Pro v\u011bt\u0161\u00ed zdvih se \u010dasto pou\u017e\u00edvaj\u00ed v\u00edcevrstv\u00e9 konstrukce, kde se jednotliv\u00e9 piezoelektrick\u00e9 desti\u010dky skl\u00e1daj\u00ed dohromady.  Kl\u00ed\u010dov\u00e9 je zaji\u0161t\u011bn\u00ed spr\u00e1vn\u00e9ho upevn\u011bn\u00ed a minimalizace ztr\u00e1t energie.  D\u016fle\u017eit\u00fdm faktorem je tak\u00e9 spr\u00e1vn\u00fd design elektrod, kter\u00e9 zaji\u0161\u0165uj\u00ed rovnom\u011brn\u00e9 rozlo\u017een\u00ed elektrick\u00e9ho pole v materi\u00e1lu.<\/p>\n<h3>Elektronika a \u0158\u00edzen\u00ed<\/h3>\n<p>Ovl\u00e1d\u00e1n\u00ed piezoelektrick\u00e9ho aktu\u00e1toru vy\u017eaduje specifick\u00e9 elektronick\u00e9 obvody.  Vzhledem k vysok\u00e9mu nap\u011bt\u00ed pot\u0159ebn\u00e9mu k aktivaci piezoelektrick\u00e9ho materi\u00e1lu je nutn\u00e9 pou\u017e\u00edt vhodn\u00fd zesilova\u010d nap\u011bt\u00ed.  Frekvence a amplituda \u0159\u00eddic\u00edho sign\u00e1lu ovliv\u0148uj\u00ed zdvih a rychlost aktu\u00e1toru.  Pou\u017eit\u00ed mikrokontrol\u00e9ru umo\u017e\u0148uje precizn\u00ed \u0159\u00edzen\u00ed a automatizaci pohybu.  Pro slo\u017eit\u011bj\u0161\u00ed aplikace je mo\u017en\u00e9 vyu\u017e\u00edt i zp\u011btnou vazbu z polohov\u00e9ho senzoru.<\/p>\n<h3>Typy DIY Piezoelektrick\u00fdch Aktu\u00e1tor\u016f<\/h3>\n<p>Existuje n\u011bkolik typ\u016f piezoelektrick\u00fdch aktu\u00e1tor\u016f, kter\u00e9 lze vyrobit doma.  Jednoduch\u00e9 aktu\u00e1tory se \u010dasto pou\u017e\u00edvaj\u00ed pro mikroskopick\u00e9 pohyby, zat\u00edmco slo\u017eit\u011bj\u0161\u00ed konstrukce mohou dosahovat v\u011bt\u0161\u00edch zdvih\u016f a sil.  N\u00e1sleduj\u00edc\u00ed tabulka ukazuje srovn\u00e1n\u00ed z\u00e1kladn\u00edch typ\u016f:<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Typ aktu\u00e1toru<\/th>\n<th>Zdvih<\/th>\n<th>S\u00edla<\/th>\n<th>Frekvence<\/th>\n<th>Slo\u017eitost<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Jednoduch\u00e1 desti\u010dka<\/td>\n<td>Mikrometry<\/td>\n<td>N\u00edzka<\/td>\n<td>Vysok\u00e1<\/td>\n<td>N\u00edzk\u00e1<\/td>\n<\/tr>\n<tr>\n<td>V\u00edcevrstv\u00fd aktu\u00e1tor<\/td>\n<td>Milimetry<\/td>\n<td>St\u0159edn\u00ed<\/td>\n<td>St\u0159edn\u00ed<\/td>\n<td>St\u0159edn\u00ed<\/td>\n<\/tr>\n<tr>\n<td>Aktu\u00e1tor s p\u00e1kou<\/td>\n<td>Milimetry<\/td>\n<td>Vysok\u00e1<\/td>\n<td>N\u00edzk\u00e1<\/td>\n<td>Vysok\u00e1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Bezpe\u010dnostn\u00ed opat\u0159en\u00ed<\/h3>\n<p>Pr\u00e1ce s piezoelektrick\u00fdmi materi\u00e1ly vy\u017eaduje opatrnost.  PZT keramika je k\u0159ehk\u00e1 a m\u016f\u017ee se snadno zlomit.  Je nutn\u00e9 db\u00e1t na ochranu o\u010d\u00ed a rukou.  Vysok\u00e9 nap\u011bt\u00ed pou\u017e\u00edvan\u00e9 k aktivaci aktu\u00e1toru m\u016f\u017ee b\u00fdt nebezpe\u010dn\u00e9.  V\u017edy je t\u0159eba dodr\u017eovat bezpe\u010dnostn\u00ed p\u0159edpisy a pou\u017e\u00edvat odpov\u00eddaj\u00edc\u00ed ochrann\u00e9 pom\u016fcky.<\/p>\n<p>Piezoelektrick\u00e9 aktu\u00e1tory nab\u00edzej\u00ed \u0161irok\u00e9 mo\u017enosti pro DIY projekty.  A\u010dkoli jejich konstrukce vy\u017eaduje ur\u010dit\u00e9 znalosti a opatrnost, v\u00fdsledkem je precizn\u00ed a rychl\u00fd mechanick\u00fd syst\u00e9m, kter\u00fd m\u00e1 \u0161irok\u00e9 uplatn\u011bn\u00ed v r\u016fzn\u00fdch oblastech, od mikromanipula\u010dn\u00edch syst\u00e9m\u016f a\u017e po ultrazvukov\u00e9 aplikace.  Spr\u00e1vn\u00fd v\u00fdb\u011br materi\u00e1l\u016f, pe\u010dliv\u00fd design a vhodn\u00e9 elektronick\u00e9 \u0159\u00edzen\u00ed jsou kl\u00ed\u010dov\u00e9 pro \u00fasp\u011b\u0161nou konstrukci DIY piezoelektrick\u00e9ho aktu\u00e1toru.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Piezoelektrick\u00e9 aktu\u00e1tory p\u0159edstavuj\u00ed fascinuj\u00edc\u00ed oblast DIY (Do It Yourself) projekt\u016f, kter\u00e1 umo\u017e\u0148uje vytv\u00e1\u0159et precizn\u00ed a rychl\u00e9 pohyby s vyu\u017eit\u00edm relativn\u011b jednoduch\u00fdch komponent. Na rozd\u00edl od tradi\u010dn\u00edch motor\u016f, piezoelektrick\u00e9 aktu\u00e1tory vyu\u017e\u00edvaj\u00ed inverzn\u00ed piezoelektrick\u00fd efekt, kde mechanick\u00e1 deformace materi\u00e1lu je vyvol\u00e1na elektrick\u00fdm polem. Tento princip umo\u017e\u0148uje dos\u00e1hnout velmi vysok\u00e9 p\u0159esnosti a rychlosti, co\u017e otev\u00edr\u00e1 dve\u0159e k \u0161irok\u00e9mu<\/p>\n","protected":false},"author":1,"featured_media":26480,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6415],"tags":[],"class_list":["post-61966","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/61966","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/comments?post=61966"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/61966\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/26480"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=61966"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/categories?post=61966"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/tags?post=61966"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}