{"id":1356,"date":"2024-10-10T02:37:10","date_gmt":"2024-10-10T02:37:10","guid":{"rendered":"https:\/\/nbaem.com\/?p=1356"},"modified":"2025-09-18T04:11:52","modified_gmt":"2025-09-18T04:11:52","slug":"what-is-magnetic-hysteresis","status":"publish","type":"post","link":"https:\/\/nbaem.com\/cs\/what-is-magnetic-hysteresis\/","title":{"rendered":"Co je magnetick\u00e1 hystereze"},"content":{"rendered":"<h2>Definice magnetick\u00e9 hystereze<\/h2>\n<p>Magnetick\u00e1 hysterezn\u00ed je vlastnost feromagnetick\u00fdch materi\u00e1l\u016f, kdy magnetick\u00e1 odezva materi\u00e1lu z\u00e1vis\u00ed nejen na aktu\u00e1ln\u00edm magnetick\u00e9m poli, ale tak\u00e9 na jeho minul\u00e9m vystaven\u00ed magnetick\u00fdm pol\u00edm. Jednodu\u0161e \u0159e\u010deno, kdy\u017e na materi\u00e1ly jako \u017eelezo p\u016fsob\u00edte magnetick\u00e9 pole, stanou se magnetizovan\u00fdmi. Nicm\u00e9n\u011b, kdy\u017e se magnetick\u00e9 pole zm\u011bn\u00ed nebo odstran\u00ed, tyto materi\u00e1ly okam\u017eit\u011b neztr\u00e1cej\u00ed svou magnetizaci. M\u00edsto toho si uchov\u00e1vaj\u00ed ur\u010ditou magnetickou pam\u011b\u0165, co\u017e zp\u016fsobuje zpo\u017ed\u011bn\u00ed jejich reakce.<\/p>\n<p>Toto zpo\u017ed\u011bn\u00ed je vysv\u011btleno fyzikou magnetick\u00fdch dom\u00e9n \u2013 mal\u00fdch oblast\u00ed uvnit\u0159 materi\u00e1lu, kde jsou magnetick\u00e9 momenty slad\u011bny. Kdy\u017e je na materi\u00e1l aplikov\u00e1no vn\u011bj\u0161\u00ed magnetick\u00e9 pole, tyto dom\u00e9ny rostou nebo se zmen\u0161uj\u00ed, ale okam\u017eit\u011b se nevracej\u00ed do p\u016fvodn\u00edho stavu, kdy\u017e se pole zm\u011bn\u00ed. To vytv\u00e1\u0159\u00ed uzav\u0159en\u00fd vzor zn\u00e1m\u00fd jako magnetick\u00e1 hysterezn\u00ed smy\u010dka.<\/p>\n<p>Hysterezn\u00ed smy\u010dka graficky zn\u00e1zor\u0148uje, jak se magnetizace (magnetick\u00e1 indukce) materi\u00e1lu m\u011bn\u00ed v reakci na s\u00edlu aplikovan\u00e9ho magnetick\u00e9ho pole (magnetick\u00e1 intenzita). Odhaluje kl\u00ed\u010dov\u00e9 vlastnosti, jako je koercivita (odolnost v\u016f\u010di demagnetizaci) a retence (zbytkov\u00e1 magnetizace), co\u017e je z\u00e1sadn\u00ed pro pochopen\u00ed a navrhov\u00e1n\u00ed magnetick\u00fdch za\u0159\u00edzen\u00ed.<\/p>\n<h2>Jak funguje magnetick\u00e1 hysterezn\u00ed jev<\/h2>\n<p><img decoding=\"async\" class=\"\" src=\"https:\/\/pub-36eea33d6f1540d281c285671ffb8664.r2.dev\/2025\/09\/18\/Magnetic_Hysteresis_Loop_Explanation_m7Jl41FaV.webp\" alt=\"Vysv\u011btlen\u00ed magnetick\u00e9 smy\u010dky hyster\u00e9ze\" width=\"510\" height=\"449\" \/><\/p>\n<p>Magnetick\u00e1 hysterezn\u00ed jev nast\u00e1v\u00e1 kv\u016fli zp\u016fsobu, jak\u00fdm magnetick\u00e9 materi\u00e1ly reaguj\u00ed p\u0159i magnetizaci a n\u00e1sledn\u00e9m demagnetizov\u00e1n\u00ed. Kdy\u017e na materi\u00e1l p\u016fsob\u00edte magnetick\u00fdm polem, jeho mal\u00e9 magnetick\u00e9 oblasti, naz\u00fdvan\u00e9 dom\u00e9ny, za\u010dnou b\u00fdt zarovn\u00e1ny s t\u00edmto polem. Tato orientace je to, co vytv\u00e1\u0159\u00ed magnetizaci. Ale kdy\u017e magnetick\u00e9 pole odstran\u00edte nebo obr\u00e1t\u00edte, tyto dom\u00e9ny se okam\u017eit\u011b nevracej\u00ed do p\u016fvodn\u00edho stavu. Toto zpo\u017ed\u011bn\u00ed je p\u0159\u00ed\u010dinou efektu hystereze.<\/p>\n<p>Hysterezn\u00ed smy\u010dka nebo B-H k\u0159ivka je graf, kter\u00fd ukazuje, jak se m\u011bn\u00ed magnetick\u00e1 indukce (B) materi\u00e1lu v z\u00e1vislosti na s\u00edle aplikovan\u00e9ho magnetick\u00e9ho pole (H). D\u016fle\u017eit\u00e9 \u010d\u00e1sti t\u00e9to smy\u010dky zahrnuj\u00ed:<\/p>\n<ul>\n<li><strong>Koercivita<\/strong>: Obratn\u00e9 magnetick\u00e9 pole pot\u0159ebn\u00e9 k n\u00e1vratu magnetizace na nulu. Ukazuje, jak je magnetik tvrdohlav\u00fd v udr\u017een\u00ed sv\u00e9 magnetizace.<\/li>\n<li><strong>Retence (nebo remanence)<\/strong>: Mno\u017estv\u00ed zbytkov\u00e9 magnetizace, kdy\u017e je vn\u011bj\u0161\u00ed magnetick\u00e9 pole odstran\u011bno. To ukazuje, kolik magnetick\u00e9 pam\u011bti materi\u00e1l uchov\u00e1v\u00e1.<\/li>\n<li><strong>Saturace magnetizace<\/strong>: Maxim\u00e1ln\u00ed magnetizace, kterou m\u016f\u017ee materi\u00e1l dos\u00e1hnout, kdy\u017e jsou v\u0161echny dom\u00e9ny pln\u011b zarovn\u00e1ny.<\/li>\n<\/ul>\n<h2>Typy magnetick\u00fdch materi\u00e1l\u016f a jejich charakteristiky hystereze<\/h2>\n<p>Magnetick\u00e9 materi\u00e1ly se d\u011bl\u00ed p\u0159edev\u0161\u00edm do dvou kategori\u00ed:\u00a0<strong>m\u011bkk\u00fdch magnetick\u00fdch materi\u00e1lech<\/strong>\u00a0a\u00a0<strong>tvrd\u00e9 magnetick\u00e9 materi\u00e1ly<\/strong>. Ka\u017ed\u00fd typ vykazuje odli\u0161n\u00e9 chov\u00e1n\u00ed hystereze, co\u017e ovliv\u0148uje jejich praktick\u00e9 pou\u017eit\u00ed.<\/p>\n<h3>M\u011bkk\u00e9 magnetick\u00e9 materi\u00e1ly<\/h3>\n<ul>\n<li>Maj\u00ed\u00a0<strong>\u00fazk\u00e9 hysterezn\u00ed smy\u010dky<\/strong><\/li>\n<li>N\u00edzkou koercivitu (snadno magnetizovat a demagnetizovat)<\/li>\n<li>N\u00edzkou retenci (dob\u0159e nezachov\u00e1vaj\u00ed magnetizaci)<\/li>\n<li>Ide\u00e1ln\u00ed pro aplikace vy\u017eaduj\u00edc\u00ed rychlou magnetickou odezvu a minim\u00e1ln\u00ed ztr\u00e1ty energie<\/li>\n<\/ul>\n<p><strong>B\u011b\u017en\u00e9 p\u0159\u00edklady:<\/strong><\/p>\n<ul>\n<li>K\u0159em\u00edkov\u00e1 ocel<\/li>\n<li>Ferrity<\/li>\n<\/ul>\n<h3>Tvrd\u00e9 magnetick\u00e9 materi\u00e1ly<\/h3>\n<ul>\n<li>Uk\u00e1zat\u00a0<strong>\u0161irok\u00e9 hysterezn\u00ed smy\u010dky<\/strong><\/li>\n<li>Vysok\u00e1 coercivita (odol\u00e1vaj\u00ed demagnetizaci)<\/li>\n<li>Vysok\u00e1 retence (udr\u017euje magnetizaci po dlouhou dobu)<\/li>\n<li>Pou\u017e\u00edv\u00e1 se tam, kde je pot\u0159eba trval\u00e1 magnetizace<\/li>\n<\/ul>\n<p><strong>B\u011b\u017en\u00e9 p\u0159\u00edklady:<\/strong><\/p>\n<ul>\n<li>Vz\u00e1cn\u00e9 zeminy magnety (jako neodym a samarium-kobalt)<\/li>\n<\/ul>\n<div class=\"table-responsive\">\n<table class=\"table\">\n<thead>\n<tr>\n<th>Vlastnost<\/th>\n<th>M\u011bkk\u00e9 magnetick\u00e9 materi\u00e1ly<\/th>\n<th>Tvrd\u00e9 magnetick\u00e9 materi\u00e1ly<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Koercivita<\/td>\n<td>N\u00edzk\u00e1<\/td>\n<td>Vysok\u00e1<\/td>\n<\/tr>\n<tr>\n<td>Retence<\/td>\n<td>N\u00edzk\u00e1<\/td>\n<td>Vysok\u00e1<\/td>\n<\/tr>\n<tr>\n<td>Hysterezn\u00ed smy\u010dka<\/td>\n<td>\u00dazk\u00e1<\/td>\n<td>\u0160irok\u00e1<\/td>\n<\/tr>\n<tr>\n<td>Ztr\u00e1ta energie (ztr\u00e1ta hystereze)<\/td>\n<td>N\u00edzk\u00e1<\/td>\n<td>Vy\u0161\u0161\u00ed<\/td>\n<\/tr>\n<tr>\n<td>Aplikace<\/td>\n<td>Transform\u00e1tory, c\u00edvky<\/td>\n<td>Trval\u00e9 magnety, motory<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Porozum\u011bn\u00ed t\u011bmto rozd\u00edl\u016fm pom\u00e1h\u00e1 vybrat spr\u00e1vn\u00fd materi\u00e1l na z\u00e1klad\u011b \u00fa\u010dinnosti, pot\u0159eb magnetick\u00e9 pam\u011bti a spot\u0159eby energie \u2013 co\u017e je zvl\u00e1\u0161t\u011b d\u016fle\u017eit\u00e9 na trhu v \u010cesk\u00e9 republice pro pr\u016fmysly jako energetika, elektronika a automobilov\u00fd pr\u016fmysl.<\/p>\n<p>Pro v\u00edce informac\u00ed o tom, jak funguj\u00ed magnetick\u00e9 materi\u00e1ly, si p\u0159e\u010dt\u011bte tento\u00a0<span style=\"color: #ff6600;\"><strong><a style=\"color: #ff6600;\" href=\"https:\/\/nbaem.com\/cs\/soft-magnetic-materials-vs-hard-magnetic-materials\/\" target=\"_blank\" rel=\"noopener\">m\u011bkk\u00fdch vs tvrd\u00fdch magnetick\u00fdch materi\u00e1lech<\/a><\/strong><\/span>\u00a0pr\u016fvodce.<\/p>\n<p>&nbsp;<\/p>\n<h2>V\u00fdznam magnetick\u00e9 hystereze v magnetick\u00fdch materi\u00e1lech<\/h2>\n<p>Magnetick\u00e1 hystereza hraje velkou roli v tom, jak magnetick\u00e9 materi\u00e1ly funguj\u00ed, zvl\u00e1\u0161t\u011b kdy\u017e jsou pou\u017e\u00edv\u00e1ny v ka\u017edodenn\u00edch za\u0159\u00edzen\u00edch. Jedn\u00edm z hlavn\u00edch probl\u00e9m\u016f je\u00a0<strong>ztr\u00e1ta energie kv\u016fli hysterezi<\/strong>, \u010dasto naz\u00fdvan\u00e1 ztr\u00e1ta hystereze. Tato ztr\u00e1ta nast\u00e1v\u00e1, proto\u017ee kdy\u017e magnetick\u00fd materi\u00e1l, jako je j\u00e1dro transform\u00e1toru nebo vinut\u00ed motoru, proch\u00e1z\u00ed cyklem magnetizace a demagnetizace (AC aplikace), pl\u00fdtv\u00e1 energi\u00ed ve form\u011b tepla. To sni\u017euje \u00fa\u010dinnost a m\u016f\u017ee zv\u00fd\u0161it provozn\u00ed n\u00e1klady.<\/p>\n<p>U transform\u00e1tor\u016f, induktor\u016f a elektrick\u00fdch motor\u016f omezuje ztr\u00e1ta hystereze, jak dob\u0159e za\u0159\u00edzen\u00ed p\u0159em\u011b\u0148uje a p\u0159en\u00e1\u0161\u00ed elektrickou energii. \u010c\u00edm v\u00fdrazn\u011bj\u0161\u00ed je hysterezn\u00ed smy\u010dka, t\u00edm v\u00edce energie se ztr\u00e1c\u00ed. Proto je d\u016fle\u017eit\u00e9 vyb\u00edrat materi\u00e1ly s n\u00edzkou koercivitou a \u00fazk\u00fdmi hysterezn\u00edmi smy\u010dkami pro zlep\u0161en\u00ed \u00fa\u010dinnosti za\u0159\u00edzen\u00ed.<\/p>\n<p>Krom\u011b energetick\u00fdch aplikac\u00ed je magnetick\u00e1 hystereza kl\u00ed\u010dov\u00e1 pro\u00a0<strong>magnetick\u00e1 \u00falo\u017ei\u0161t\u011b a senzory<\/strong>. Retentivita\u2014schopnost magnetick\u00e9ho materi\u00e1lu zapamatovat si sv\u00e9 magnetizace\u2014umo\u017e\u0148uje ukl\u00e1d\u00e1n\u00ed dat na pevn\u00e9 disky nebo udr\u017eov\u00e1n\u00ed senzor\u016f stabiln\u00ed a spolehliv\u00e9. Bez \u0159\u00edzen\u00fdch vlastnost\u00ed hystereze by tyto za\u0159\u00edzen\u00ed nefungovala p\u0159edv\u00eddateln\u011b nebo by dob\u0159e neuchov\u00e1vala informace.<\/p>\n<p>Porozum\u011bn\u00ed a \u0159\u00edzen\u00ed magnetick\u00e9 hystereze je kl\u00ed\u010dem k navrhov\u00e1n\u00ed lep\u0161\u00edch, energeticky \u00fasporn\u011bj\u0161\u00edch magnetick\u00fdch komponent a spolehliv\u00fdch datov\u00fdch technologi\u00ed.<\/p>\n<h2>Praktick\u00e9 aplikace magnetick\u00e9 hystereze<\/h2>\n<p>Magnetick\u00e1 hystereza hraje kl\u00ed\u010dovou roli v mnoha praktick\u00fdch technologi\u00edch, zejm\u00e9na v elektrotechnice. U transform\u00e1tor\u016f, motor\u016f a gener\u00e1tor\u016f pom\u00e1h\u00e1 \u0159\u00edzen\u00ed hystereze zlep\u0161ovat \u00fa\u010dinnost t\u00edm, \u017ee sni\u017euje ztr\u00e1ty energie b\u011bhem magnetiza\u010dn\u00edch cykl\u016f. To p\u0159\u00edmo ovliv\u0148uje v\u00fdkon a \u017eivotnost t\u011bchto stroj\u016f.<\/p>\n<p>V ukl\u00e1d\u00e1n\u00ed dat je magnetick\u00e1 hystereza z\u00e1kladem magnetick\u00e9ho z\u00e1znamu. Za\u0159\u00edzen\u00ed jako pevn\u00e9 disky spol\u00e9haj\u00ed na materi\u00e1ly, kter\u00e9 si udr\u017euj\u00ed magnetick\u00e9 stavy (retentivita), aby mohly spolehliv\u011b ukl\u00e1dat data po dlouhou dobu. Vlastnosti hystereze zaji\u0161\u0165uj\u00ed, \u017ee data z\u016fstanou nedot\u010den\u00e1, dokud nejsou \u00famysln\u011b zm\u011bn\u011bna.<\/p>\n<p>Magnetick\u00e9 senzory a sp\u00edna\u010de tak\u00e9 z\u00e1vis\u00ed na hysterezi. Tato za\u0159\u00edzen\u00ed vyu\u017e\u00edvaj\u00ed magnetick\u00fd pam\u011b\u0165ov\u00fd efekt k detekci zm\u011bn v magnetick\u00fdch pol\u00edch nebo k \u0159\u00edzen\u00ed obvod\u016f na z\u00e1klad\u011b magnetick\u00fdch stav\u016f. To je \u010din\u00ed nezbytn\u00fdmi v automatizaci a bezpe\u010dnostn\u00edch syst\u00e9mech.<\/p>\n<p>Nakonec, magnetick\u00e1 hystereza pom\u00e1h\u00e1 v magnetick\u00e9m st\u00edn\u011bn\u00ed a filtraci \u0161umu. Materi\u00e1ly s ur\u010dit\u00fdmi vlastnostmi hystereze mohou blokovat nebo sni\u017eovat ne\u017e\u00e1douc\u00ed magnetick\u00e9 ru\u0161en\u00ed, chr\u00e1n\u00edc\u00ed citlivou elektroniku v l\u00e9ka\u0159sk\u00fdch za\u0159\u00edzen\u00edch, komunika\u010dn\u00edch syst\u00e9mech a pr\u016fmyslov\u00e9m vybaven\u00ed.<\/p>\n<h2>M\u011b\u0159en\u00ed a anal\u00fdza magnetick\u00e9 hystereze<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/pub-36eea33d6f1540d281c285671ffb8664.r2.dev\/2025\/09\/18\/Magnetic_Hysteresis_Measurement_Techniques_AVzZz58.webp\" alt=\"Techniky m\u011b\u0159en\u00ed magnetick\u00e9 hyster\u00e9ze\" \/><\/p>\n<p>Pro pochopen\u00ed a optimalizaci magnetick\u00e9 hystereze spol\u00e9h\u00e1me na p\u0159esn\u00e9 p\u0159\u00edstroje, kter\u00e9 m\u011b\u0159\u00ed magnetick\u00fd hysterezn\u00ed cyklus, tak\u00e9 naz\u00fdvan\u00fd B-H k\u0159ivka. Dva nejb\u011b\u017en\u011bj\u0161\u00ed n\u00e1stroje jsou:<\/p>\n<ul>\n<li><strong>Vibra\u010dn\u00ed magnetometr (VSM):<\/strong>\u00a0M\u011b\u0159\u00ed magnetick\u00e9 vlastnosti vibrac\u00ed vzorku v magnetick\u00e9m poli, detekuje zm\u011bny v magnetizaci.<\/li>\n<li><strong>B-H cyklick\u00fd trac\u00e9r:<\/strong>\u00a0P\u0159\u00edmo sleduje hysterezn\u00ed cyklus m\u011b\u0159en\u00edm intenzity magnetick\u00e9ho pole (H) proti magnetick\u00e9 indukci (B).<\/li>\n<\/ul>\n<p>Tyto n\u00e1stroje pom\u00e1haj\u00ed shroma\u017e\u010fovat kl\u00ed\u010dov\u00e9 parametry z hysterezn\u00edho cyklu:<\/p>\n<div class=\"table-responsive\">\n<table class=\"table\">\n<thead>\n<tr>\n<th>Parametr<\/th>\n<th>Co to znamen\u00e1<\/th>\n<th>Pro\u010d je to d\u016fle\u017eit\u00e9<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Koercivita<\/td>\n<td>Pole pot\u0159ebn\u00e9 k sn\u00ed\u017een\u00ed magnetizace na nulu<\/td>\n<td>Ukazuje odolnost materi\u00e1lu v\u016f\u010di demagnetizaci<\/td>\n<\/tr>\n<tr>\n<td>Retence<\/td>\n<td>Zbytkov\u00e1 magnetizace po odstran\u011bn\u00ed pole<\/td>\n<td>Indikuje, jak dob\u0159e si materi\u00e1l pamatuje magnetick\u00fd stav<\/td>\n<\/tr>\n<tr>\n<td>Saturace magnetizace<\/td>\n<td>Maxim\u00e1ln\u00ed magnetizace, kterou m\u016f\u017ee materi\u00e1l dos\u00e1hnout<\/td>\n<td>Definuje magnetickou kapacitu materi\u00e1lu<\/td>\n<\/tr>\n<tr>\n<td>Ztr\u00e1ta hystereze<\/td>\n<td>Oblast uvnit\u0159 smy\u010dky p\u0159edstavuj\u00edc\u00ed ztr\u00e1tu energie<\/td>\n<td>Kl\u00ed\u010dov\u00e9 pro posouzen\u00ed \u00fa\u010dinnosti, zejm\u00e9na p\u0159i st\u0159\u00eddav\u00e9m proudu<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>V\u00fdrobci pou\u017e\u00edvaj\u00ed tato m\u011b\u0159en\u00ed v kontrole jakosti, aby zajistili, \u017ee materi\u00e1ly spl\u0148uj\u00ed specifick\u00e9 normy v\u00fdkonu a \u00fa\u010dinnosti. Konzistence v magnetick\u00fdch vlastnostech znamen\u00e1 lep\u0161\u00ed spolehlivost u transform\u00e1tor\u016f, motor\u016f a skladovac\u00edch za\u0159\u00edzen\u00ed pou\u017e\u00edvan\u00fdch na trhu \u010cesk\u00e9 republiky.<\/p>\n<h2>Minimalizace a \u0159\u00edzen\u00ed ztr\u00e1t hyster\u00e9ze<\/h2>\n<p>Sn\u00ed\u017een\u00ed ztr\u00e1t hyster\u00e9ze za\u010d\u00edn\u00e1 volbou spr\u00e1vn\u00e9ho typu magnetick\u00e9ho materi\u00e1lu.\u00a0<strong>M\u011bkk\u00e9 magnetick\u00e9 materi\u00e1ly<\/strong>\u00a0jako nap\u0159\u00edklad silikonov\u00e1 ocel nebo ferrity maj\u00ed n\u00edzkou koercivitu, co\u017e znamen\u00e1, \u017ee se snadno magnetizuj\u00ed a demagnetizuj\u00ed s minim\u00e1ln\u00ed ztr\u00e1tou energie. Tyto jsou ide\u00e1ln\u00ed pro transform\u00e1tory a induktory, kde doch\u00e1z\u00ed k rychl\u00fdm zm\u011bn\u00e1m magnetick\u00e9ho pole. Na druhou stranu,\u00a0<strong>tvrd\u00e9 magnetick\u00e9 materi\u00e1ly<\/strong>\u00a0s vysokou koercivitou jsou skv\u011bl\u00e9, kdy\u017e chcete permanentn\u00ed magnet, ale obecn\u011b maj\u00ed vy\u0161\u0161\u00ed ztr\u00e1ty hyster\u00e9ze.<\/p>\n<p>Pro dal\u0161\u00ed \u0159\u00edzen\u00ed ztr\u00e1t hyster\u00e9ze v\u00fdrobci \u010dasto pou\u017e\u00edvaj\u00ed o\u0161et\u0159en\u00ed jako:<\/p>\n<ul>\n<li><strong>\u017d\u00edh\u00e1n\u00ed<\/strong>: Oh\u0159ev a pomal\u00e9 ochlazov\u00e1n\u00ed materi\u00e1l\u016f uvol\u0148uje vnit\u0159n\u00ed nap\u011bt\u00ed, zlep\u0161uje magnetick\u00e9 vlastnosti a sni\u017euje ztr\u00e1ty energie.<\/li>\n<li><strong>Sl\u00e9v\u00e1n\u00ed<\/strong>: P\u0159id\u00e1v\u00e1n\u00ed prvk\u016f jako hlin\u00edk, nikl nebo kobalt pom\u00e1h\u00e1 p\u0159izp\u016fsobit magnetick\u00e9 chov\u00e1n\u00ed a sni\u017eovat hyster\u00e9zi.<\/li>\n<\/ul>\n<p>Nakonec, chytr\u00fd n\u00e1vrh hraje velkou roli. In\u017een\u00fd\u0159i optimalizuj\u00ed tvary magnetick\u00fdch za\u0159\u00edzen\u00ed, velikosti j\u00e1dra a konfigurace vinut\u00ed, aby minimalizovali zbyte\u010dn\u00fd magnetick\u00fd odpor a pl\u00fdtv\u00e1n\u00ed energi\u00ed. Pou\u017eit\u00ed lamelov\u00fdch jader nebo pr\u00e1\u0161kov\u00fdch jader tak\u00e9 pom\u00e1h\u00e1 omezit v\u00ed\u0159iv\u00e9 proudy, \u010d\u00edm\u017e dopl\u0148uje \u00fasil\u00ed o sn\u00ed\u017een\u00ed ztr\u00e1t hyster\u00e9ze.<\/p>\n<p>V\u0161echny tyto strategie dohromady \u010din\u00ed magnetick\u00e9 sou\u010d\u00e1stky efektivn\u011bj\u0161\u00edmi a spolehliv\u011bj\u0161\u00edmi, co\u017e p\u0159in\u00e1\u0161\u00ed v\u00fdhody od transform\u00e1tor\u016f po elektrick\u00e9 motory pou\u017e\u00edvan\u00e9 na trhu \u010cesk\u00e9 republiky.<\/p>","protected":false},"excerpt":{"rendered":"<p>Definice magnetick\u00e9 hystereze Magnetick\u00e1 hysterezace je vlastnost feromagnetick\u00fdch materi\u00e1l\u016f, kdy magnetick\u00e1 odezva materi\u00e1lu z\u00e1vis\u00ed nejen na aktu\u00e1ln\u00edm magnetick\u00e9m poli, ale tak\u00e9 na jeho p\u0159edchoz\u00edm vystaven\u00ed magnetick\u00fdm pol\u00edm. Jednodu\u0161e \u0159e\u010deno, kdy\u017e na materi\u00e1ly jako \u017eelezo p\u016fsob\u00edte magnetick\u00fdm polem, stanou se magnetizovan\u00fdmi. [...]<\/p>","protected":false},"author":1,"featured_media":1354,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1356","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"jetpack_featured_media_url":"https:\/\/nbaem.com\/wp-content\/uploads\/2024\/10\/magnetic-hysteresis.jpg","_links":{"self":[{"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/posts\/1356","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/comments?post=1356"}],"version-history":[{"count":4,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/posts\/1356\/revisions"}],"predecessor-version":[{"id":2890,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/posts\/1356\/revisions\/2890"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/media\/1354"}],"wp:attachment":[{"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/media?parent=1356"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/categories?post=1356"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbaem.com\/cs\/wp-json\/wp\/v2\/tags?post=1356"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}