Iindaba-Ulwazi lomgaqo wokusebenza we-brush motor kunye ne-brushless motor

Umgaqo wokusebenza kwebrashi yeemoto

Ulwakhiwo oluphambili lwei-brushless motoryi-stator + i-rotor + ibrashi, kwaye i-torque ifunyenwe ngokujikeleza intsimi yamagnetic ukukhupha amandla e-kinetic.

I-brush motor ISEBENZISA ukuguqulwa komatshini, i-pole magnetic ayishukumi, i-coil rotation.Xa i-motor isebenza, i-coil kunye ne-commutator iyajikeleza, ngelixa intsimbi yemagneti kunye ne-carbon brush ayenzi.Utshintsho olutshintshanayo lwekhoyili yangoku lufezekiswa ngumhambisi kunye nebrashi ejikelezayo ngemoto.

Kwimoto yebrashi, le nkqubo kukwenza iqela isiphelo segalelo lamandla amabini ekhoyili, ngokulandelelana, icwangciswe ngendandatho, yahlulwe ngezinto ezikhuselayo phakathi komnye nomnye, zenza nantoni na efana nesilinda, ibe yinto ephilayo ngokuphindaphindiweyo kunye ne-motor shaft. , unikezelo lwamandla ngentsika ezimbini ezincinci ezenziwe ngekhabhoni (ibrashi yekhabhoni), phantsi kwentshukumo yoxinzelelo lwasentwasa hlobo, ukusuka kwindawo ezimbini ezimiselweyo, uxinzelelo kwigalelo lamandla, amanqaku amabini etyhula ye-coil cylindrical coil ukuya kwiseti ye umbane.

Njengeimotoujikeleza, iikhoyili ezahlukeneyo okanye izibonda ezahlukeneyo coil efanayo amandla ngamaxesha ahlukeneyo, ukuze kubekho umahluko ofanelekileyo Angle phakathi ns pali yekhoyili evelisa intsimi kazibuthe kunye nepali ns yeyona stator umazibuthe ekufutshane esisigxina.Imimandla yemagnethi iyatsalana kwaye igxothana, ivelisa amandla kwaye ityhala imotor ukuba ijikelezise.I-carbon electrode ityibilika kwintloko yocingo njengebhrashi kumphezulu wento, kungoko kuthiwe "ibrashi".

Ukutyibilika komnye nomnye kuya kubangela ukukhuhlana kunye nokulahlekelwa kweebrashi zekhabhoni, ekufuneka zitshintshwe rhoqo.Ukutshintsha kunye nokucima phakathi kwebrashi yekhabhoni kunye nentloko yocingo lwekhoyili kunokubangela i-spark yombane, ikhefu lombane kunye nokuphazamisa izixhobo zombane.

Umgaqo wokusebenza kwe-brushless motor

Kwimoto engena-brushless, uhlengahlengiso lwenziwa yisekethe yolawulo kumlawuli (ngokubanzi i-sensor yeholo + yesilawuli, kunye netekhnoloji ephezulu kakhulu yi-encoder magnetic).

I-Brushless motor ISEBENZISA isihambisi sombane, ikhoyili ayishukumi, isibonda semagnethi sijikeleza.Imoto engena-brushless ISEBENZISA iseti yezixhobo zombane ukuva indawo yepali kazibuthe yemagnethi esisigxina ngokusebenzisa iholo element SS2712.Ngokwale ngqiqo, isekethe ye-elektroniki isetyenziselwa ukutshintshela ulwalathiso lwangoku kwikhoyili ngexesha elifanelekileyo ukuze kuqinisekiswe ukuveliswa kwamandla kazibuthe kwicala elifanelekileyo lokuqhuba i-motor.Ukuphelisa ukungalungi kwe-brush motor.

Ezi zijikelezo zibizwa ngokuba yi-motor controllers.Umlawuli we-brushless motor unokuqonda imisebenzi ethile engenakuqondwa yi-motorless motor, njengokulungelelanisa i-Angle yokutshintsha amandla, i-motor braking, ukwenza i-motor reverse, ukutshixa i-motor, kunye nokusebenzisa i-motor. uphawu lokuqhawula ukumisa unikezelo lwamandla kwi-motor.Ngoku ibhetri yemoto yombane yokutshixa i-alarm, ekusebenziseni ngokupheleleyo le misebenzi.

I-Brushless dc motor yimveliso ye-mechatronics eqhelekileyo, eyenziwe ngumzimba wemoto kunye nomqhubi. Ekubeni i-brushless dc motor isetyenziswa kwimowudi yokulawula ngokuzenzekelayo, ayiyi kudibanisa ukuqala ukujikeleza kwi-rotor njenge-synchronous motor kunye nommiselo wesantya esiguqukayo. kunye nomthwalo onzima uqala, kwaye awuyi kubangela i-oscillation kwaye iphume xa umthwalo uguquka.

Umahluko wemowudi yokulawula isantya phakathi kwemoto yebrashi kunye ne-brushless motor

Ngapha koko, ulawulo lwezi ntlobo zimbini zeemoto lulawulo lwamandla ombane, kodwa ngenxa yokuba i-brushless dc ISEBENZISA isihambisi sombane, ngoko inokufezekiswa ngolawulo lwedijithali, kwaye i-brushless dc ihamba nge-carbon brush commutator, isebenzisa i-silicon elawulwa yi-analog circuit yemveli inokulawulwa. , ilula ngokwentelekiso.

1. Inkqubo yokulawula isantya semoto yebrashi kukulungelelanisa umbane wobonelelo lwamandla emoto.Emva kohlengahlengiso, i-voltage kunye neyangoku iguqulwa yi-commutator kunye nebhrashi ukutshintsha amandla ombane owenziwe yi-electrode ukuze ufezekise. injongo yokutshintsha isantya.Le nkqubo yaziwa ngokuba ngummiselo woxinzelelo.

2. Inkqubo yokulawula isantya se-brushless motor kukuba i-voltage yokunikezelwa kwamandla emoto ihlala ingatshintshi, umqondiso wokulawula uhlengahlengiso lombane utshintshiwe, kwaye izinga lokutshintsha kwe-tube ye-MOS enamandla kakhulu iguqulwa yi-microprocessor ukuya. qaphela utshintsho lwesantya.Le nkqubo ibizwa ngokuba yi-frequency conversion.

Umahluko wokusebenza

1. I-brush motor inesakhiwo esilula, ixesha elide lophuhliso kunye neteknoloji evuthiweyo

Emuva kwinkulungwane ye-19, xa i-motor yazalwa, i-motor esebenzayo yayiyifom ye-brushless, oko kukuthi i-ac squirrel-cage i-asynchronous motor, eyayisetyenziswa ngokubanzi emva kwesizukulwana sokutshintshana ngoku. ukuba uphuhliso lobuchwephesha beemoto lucotha.Ngokukodwa, i-brushless dc motor ayikwazanga ukufakwa kumsebenzi worhwebo.Ngophuhliso olukhawulezayo lwetekhnoloji ye-elektroniki, ifakwe kancinci ekusebenzeni kwezorhwebo kude kube yiminyaka yakutshanje.Ngokwenyani, iseyeyodidi lwe-ac motor.

I-Brushless motor yazalwa kungekudala, abantu bayila i-brushless dc motor.Kuba indlela ye-dc brush motor ilula, kulula ukuyivelisa kunye nokusetyenzwa, kulula ukuyigcina, kulula ukuyilawula; Injini ye-Dc nayo inempendulo ekhawulezayo, i-torque enkulu yokuqala, kwaye inokubonelela ngokusebenza okulinganiselweyo kwetorque ukusuka kwisantya esingu-zero ukuya kwisantya esilinganiselweyo, ngoko ke isetyenziswe ngokubanzi xa sele iphumile.

2. I-brushless dc motor inesantya sokuphendula ngokukhawuleza kunye ne-torque enkulu yokuqala

Imoto ye-Dc brushless inempendulo ekhawulezayo yokuqalisa, i-torque enkulu yokuqalisa, isantya esizinzileyo sokutshintsha, phantse akukho vibration ivakala ukusuka kwi-zero ukuya kwisantya esiphezulu, kwaye inokuqhuba umthwalo omkhulu xa iqala. Isixhobo samandla sincinci, i-torque yokuqala incinci, isandi sokuqala siyakhwaza, sihamba kunye nokungcangcazela okunamandla, kwaye umthwalo wokuqhuba uncinci xa uqala.

3. I-brushless dc motor ihamba kakuhle kwaye inesiphumo esihle sokuqhafaza

Imoto ye-brushless ilawulwa yi-voltage regulation, ngoko ke ukuqala kunye ne-braking kuzinzile, kwaye isantya esiqhubekayo sokusebenza kwakhona sizinzileyo.Imoto ye-brushless idla ngokulawulwa yi-digital frequency conversion, eqala ukutshintsha i-ac ukuya kwi-dc, kwaye emva koko i-dc ukuya kwi-ac, kwaye ilawula isantya ngotshintsho lwamaza.Ngoko ke, i-motor brushless ayiqhubeki kakuhle xa iqala kunye ne-braking, kunye ne-vibration enkulu, kwaye iya kuzinza kuphela xa isantya sihlala.

I-4, i-dc brush yolawulo lwemoto echanekileyo iphezulu

I-Dc brushless motor idla ngokusetyenziswa kunye nebhokisi yokunciphisa kunye ne-decoder ukwenza amandla okukhutshwa kwemoto abe mkhulu kwaye ulawulo oluchanekileyo luphezulu, ukuchaneka kokulawula kunokufikelela kwi-0.01 mm, phantse kunokuvumela iindawo ezihambayo ziyeke kuyo nayiphi na indawo efunwayo. Izixhobo ziyi-dc motor control accuracy.Njengoko i-motor brushless ayizinzile ngexesha lokuqala kunye ne-braking, iindawo ezihambayo ziya kumisa kwiindawo ezahlukeneyo ngexesha ngalinye, kwaye indawo efunwayo inokumiswa kuphela ngokubeka i-pin okanye indawo ye-limiter.

I-5, iindleko zokusetyenziswa kwe-dc brush motor ziphantsi, ukugcinwa kulula

Ngenxa yesakhiwo esilula se-brushless dc motor, ixabiso eliphantsi lokuvelisa, abavelisi abaninzi, iteknoloji evuthiweyo, ngoko isetyenziswa ngokubanzi, njengemizi-mveliso, izixhobo zokusebenza zoomatshini, izixhobo ezichanekileyo, njl., ukuba ukusilela kwemoto, buyisela ibrashi yekhabhoni. , ibrashi yekhabhoni nganye ifuna kuphela iidola ezimbalwa, cheap kakhulu.Itekhnoloji yemoto yeBrushless ayivuthwanga, ixabiso liphezulu, umda wesicelo ukhawulelwe, ikakhulu kufuneka ube kwizixhobo zesantya esingaguqukiyo, ezifana ne-frequency conversion air conditioning, ifriji, njl. , i-brushless motor umonakalo unokutshintshwa kuphela.

6, akukho brashi, ukuphazamiseka okuphantsi

Iimoto ezingenabhurashi zisusa ibrashi, olona tshintsho luthe ngqo kukungabikho kwebhrashi yemoto ebalekayo, ngaloo ndlela inciphisa kakhulu ukuphazamiseka kwentlantsi yombane kwisixhobo sikanomathotholo esikude.

7. Ingxolo ephantsi kunye nokusebenza kakuhle

Ngaphandle kweebhrashi, i-brushless motor iya kuba ne-friction encinci kakhulu ngexesha lokusebenza, ukusebenza kakuhle kunye nengxolo ephantsi kakhulu, eyinkxaso enkulu yokuzinza kwemodeli yokusebenza.

8. Ubomi benkonzo ende kunye neendleko zokugcina eziphantsi

Ibhrashi encinci, i-brushless motor inxiba ikakhulu kwi-bearing, ukusuka kwindawo yokujonga oomatshini, i-brushless motor iphantse ibe yimoto yokulungisa, xa kuyimfuneko, yenza nje ukugcinwa kothuli.