{"id":26,"date":"2024-04-04T03:16:33","date_gmt":"2024-04-04T00:16:33","guid":{"rendered":"https:\/\/sisu.ut.ee\/robot\/42-pulsilaiusmodulatsioon-ehk-pwm\/"},"modified":"2024-04-04T03:16:43","modified_gmt":"2024-04-04T00:16:43","slug":"42-pulsilaiusmodulatsioon-ehk-pwm","status":"publish","type":"page","link":"https:\/\/sisu.ut.ee\/robot\/42-pulsilaiusmodulatsioon-ehk-pwm\/","title":{"rendered":"4.2. Pulsilaiusmodulatsioon ehk PWM"},"content":{"rendered":"<p><span>Pulsilaiusmodulatsioon on konstantse amplituudiga impulsside jada, kus periood on konstantne, aga impulsside kestus muutub. MIDA V\u00c4RKI? Rahu, tegelikult ei ole pulsilaiusmodulatsioon midagi muud, kui erinevate tarbijate (n\u00e4iteks mootori) sisse-v\u00e4lja-sisse-v\u00e4lja-sisse-v\u00e4lja l\u00fclitamine. <\/span><\/p>\n<p><span>Kui seda l\u00fclitamist teha kiiremini, kui mootor reageerida j\u00f5uab, siis saame muuta mootori v\u00f5imsust ja kiirust. Robootikas kasutataksegi sellist impulssidest koosnevat PWM signaali p\u00f5hiliselt alalisvoolumootorite ja LED lampide v\u00f5imsuse juhtimiseks.<\/span><\/p>\n<p><span>J\u00e4rgnevas videoloengus vaatame, kuidas juhtida alalisvoolumootorit ning mis asi see PWM ikka on. Loomulikult teeme l\u00e4bi kaks n\u00e4idet, kus muudame mBot-i mootorite kiirust ja kontrolleril asuva RGB LED-i heledust.<\/span><\/p>\n<p><span><div class=\"ratio ratio-16x9 mb-3\"><div class=\"video-placeholder-wrapper video-placeholder-wrapper--16x9\">\n\t\t\t    <div class=\"video-placeholder d-flex justify-content-center align-items-center\">\n\t\t\t        <div class=\"overlay text-white p-2 w-100 text-center d-block justify-content-center align-items-center\">\n\t\t\t            <div>Kolmandate osapoolte sisu n\u00e4gemiseks palun n\u00f5ustu k\u00fcpsistega.<\/div>\n\t\t\t            <button class=\"btn btn-secondary btn-sm mt-1 consent-change\">Muuda n\u00f5usolekut<\/button>\n\t\t\t        <\/div>\n\t\t\t    <\/div>\n\t\t\t<\/div>\n<\/div><\/span><\/p>\n<p style=\"text-align: center\"><a href=\"https:\/\/youtu.be\/3CsKo34juL4\" target=\"_blank\" rel=\"noopener\"><span>https:\/\/youtu.be\/3CsKo34juL4<\/span><\/a><\/p>\n<div class=\"valem-m6tlekaasa\">\n<h3><img loading=\"lazy\" decoding=\"async\" width=\"40\" height=\"33\" class=\"alignnone wp-image-28\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/198\/robot_motle.png\" title=\"robot_motle.png\" alt=\"robot_motle.png\">M\u00f5tle kaasa!<\/h3>\n<p><strong>Miks kasutatakse mBot rataste kiiruse ja ka LED heleduse m\u00e4\u00e4ramiseks v\u00e4\u00e4rtusi 0-255, kui t\u00e4itetegurit iseloomustatakse protsentides 0-100. <\/strong><\/p>\n<p><strong>Vihje: tuleta meelde, kuidas andmeid arvutis hoitakse.<\/strong><\/p>\n<p><span id=\"docs-internal-guid-a6eeb87c-b6e3-2fef-b5c8-9c23eda80ad3\"><span><div class=\"accordion mb-3\">\n        <div class=\"accordion-item accordion-item--white\">\n        <h2 class=\"accordion-header\" id=\"accordion-69dbaca11c740-heading\">\n            <button class=\"accordion-button collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#accordion-69dbaca11c740-collapse\" aria-expanded=\"true\" aria-controls=\"accordion-69dbaca11c740-collapse\">Vastus <\/button>\n        <\/h2>\n        <div id=\"accordion-69dbaca11c740-collapse\" class=\"accordion-collapse collapse\" aria-labelledby=\"accordion-69dbaca11c740-heading\">\n            <div class=\"accordion-body\"> mBoti teegis hoitakse t\u00e4itetegurit 8-bitise m\u00e4rgita t\u00e4isarvuna. Et muutuja mahtu maksimaalselt \u00e4ra kasutada, seatakse 100% vastavusse seda t\u00fc\u00fcpi muutuja maksimaalse v\u00e4\u00e4rtusega ehk 255.\u00a0<\/div>\n        <\/div>\n        <\/div>\n    <\/div><\/span><\/span><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Pulsilaiusmodulatsioon on konstantse amplituudiga impulsside jada, kus periood on konstantne, aga impulsside kestus muutub. MIDA V\u00c4RKI? Rahu, tegelikult ei ole pulsilaiusmodulatsioon midagi muud, kui erinevate tarbijate (n\u00e4iteks mootori) sisse-v\u00e4lja-sisse-v\u00e4lja-sisse-v\u00e4lja l\u00fclitamine. Kui seda l\u00fclitamist teha kiiremini, kui mootor reageerida j\u00f5uab, siis &#8230;<\/p>\n","protected":false},"author":98,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-26","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/sisu.ut.ee\/robot\/wp-json\/wp\/v2\/pages\/26","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sisu.ut.ee\/robot\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sisu.ut.ee\/robot\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sisu.ut.ee\/robot\/wp-json\/wp\/v2\/users\/98"}],"replies":[{"embeddable":true,"href":"https:\/\/sisu.ut.ee\/robot\/wp-json\/wp\/v2\/comments?post=26"}],"version-history":[{"count":1,"href":"https:\/\/sisu.ut.ee\/robot\/wp-json\/wp\/v2\/pages\/26\/revisions"}],"predecessor-version":[{"id":93,"href":"https:\/\/sisu.ut.ee\/robot\/wp-json\/wp\/v2\/pages\/26\/revisions\/93"}],"wp:attachment":[{"href":"https:\/\/sisu.ut.ee\/robot\/wp-json\/wp\/v2\/media?parent=26"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}