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Matsayin martani don injin DC maras gogewa

Tun haihuwar babur DC motor, Hall Tasirin firikwensin ya kasance babban karfi na fahimtar ra'ayi na commutation.Tun da ikon sarrafawa na uku yana buƙatar kawai na'urori masu auna sigina guda uku kuma yana da ƙananan farashi, sau da yawa mafi yawan zaɓin tattalin arziki don juyawa daga yanayin farashin BOM kawai.Hall effects firikwensin saka a cikin stator gane matsayi na rotor domin transistor a cikin uku-lokaci gada za a iya canza don fitar da motor.The uku Hall sakamako firikwensin fitarwa ana kullum labeled kamar U, V, da kuma tashoshi. Ko da yake Hall Hall. na'urori masu auna firikwensin tasiri na iya magance matsalar yadda ya kamata na motsa motar BLDC, kawai sun cika rabin bukatun tsarin BLDC.

Kodayake firikwensin tasirin Hall yana ba mai sarrafawa damar fitar da motar BLDC, abin takaici ikonsa yana iyakance ga sauri da jagora.A cikin motar motsa jiki guda uku, firikwensin sakamako na Hall zai iya samar da matsayi mai kusurwa a cikin kowane zagaye na lantarki. Kamar yadda adadin nau'i-nau'i na igiya ya karu, haka ma yawan hawan wutar lantarki a kowane juyi na inji, kuma yayin da amfani da BLDCs ya zama mafi tartsatsi. , don haka ya kamata a yi la'akari da madaidaicin matsayi.Don tabbatar da cewa maganin yana da ƙarfi kuma cikakke, tsarin BLDC ya kamata ya ba da bayanin matsayi na ainihi don mai sarrafawa zai iya bin diddigin ba kawai gudu da shugabanci ba, har ma da nisa na tafiya da matsayi na kusurwa.
Don saduwa da buƙatar ƙarin bayanan matsayi mai tsauri, mafita na yau da kullun shine ƙara ƙarar juzu'i mai jujjuyawa zuwa motar BLDC. Yawanci, ana ƙara encoders masu haɓakawa zuwa tsarin madauki na sarrafawa iri ɗaya ban da firikwensin tasirin Hall.Hall tasirin firikwensin su ne. ana amfani da su don jujjuyawar mota, yayin da ake amfani da encoders don ƙarin madaidaicin bin diddigin matsayi, juyawa, saurin gudu da shugabanci.Tun da tasirin tasirin Hall kawai yana ba da sabon bayanin matsayi a kowane canjin jihar Hall, daidaitonsa kawai ya kai jihohi shida don kowane zagaye na wutar lantarki. Bipolar Motors, akwai jihohi shida kawai a kowace zagaye na inji. Bukatar duka biyu a bayyane yake idan aka kwatanta da encoder na haɓakawa wanda ke ba da ƙuduri a cikin dubban PPR (pulses per juyin juya hali), wanda za'a iya ƙaddamar da shi zuwa sau hudu adadin canje-canje na jihar.
Koyaya, tunda masana'antun motoci a halin yanzu dole ne su haɗa na'urori masu auna firikwensin Hall biyu da na'urori masu haɓakawa a cikin injinan su, masana'antun da yawa sun fara ba da incoders masu haɓakawa tare da abubuwan da ke tafiya, waɗanda muke yawanci magana kawai azaman encoders masu tafiya. Waɗannan encoders an tsara su musamman don samar da ba kawai na gargajiya orthogonal A da B tashoshi (kuma a wasu lokuta da "sau ɗaya kowace bi da bi" index pulse tashar tashar Z), amma kuma daidaitattun U, V, da W sigina commutation da ake bukata da mafi yawan BLDC direban mota.Wannan ceton mota. ƙirƙira matakin da ba dole ba na shigar da firikwensin sakamako na Hall da maƙallan ƙara a lokaci guda.
Ko da yake fa'idodin wannan hanya a bayyane yake, akwai gagarumin ciniki-kamar yadda aka ambata a sama, matsayi na rotor da stator dole ne a ƙware don Motar BLDC mai goge baki don daidaitawa yadda ya kamata.Wannan yana nufin cewa dole ne a kula don tabbatar da cewa tashoshi na U/V/W na commutator encoder sun daidaita daidai da lokacin motar BLDC.