Chifukwa chiyani zida zamagetsi (monga kubowola pamanja, zopukutira m'makona, ndi zina zotero) nthawi zambiri zimagwiritsa ntchito ma motors opukutirama motors opanda brush? Kuti timvetsetse, izi sizimamveka bwino mu sentensi imodzi kapena ziwiri.

Ma motors a DC amagawidwa kukhala ma motors opukutidwa ndi ma brushless motors. “Burashi” yotchulidwa pano ikutanthauza maburashi a carbon.Kodi burashi ya kaboni imawoneka bwanji?

Chifukwa chiyani ma mota a DC amafunikira maburashi a kaboni?Kodi pali kusiyana kotani pakati pa maburashi a carbon ndi opanda?Tiyeni tiyang'ane pansi!

Mfundo ya brushed DC motor

Monga tawonetsera pa Chithunzi 1, ichi ndi chithunzi chachitsanzo cha DC brush motor.Maginito awiri osasunthika osiyana, koyilo imayikidwa pakati, malekezero onse a koyilo amalumikizidwa ndi mphete ziwiri zozungulira zamkuwa, malekezero onse a mphete zamkuwa amalumikizana ndi burashi yokhazikika ya kaboni, ndiyeno DC imalumikizidwa. ku malekezero onse a carbon burashi. magetsi.

chithunzi 1

Pambuyo polumikizana ndi magetsi, mphamvuyi ikuwonetsedwa ndi muvi mu Chithunzi 1.Malinga ndi lamulo la kumanzere, koyilo yachikasu imayendetsedwa ndi mphamvu yamagetsi yokwera pamwamba; koyilo ya buluu imayendetsedwa ndi mphamvu yamagetsi yotsika pansi.Rotor ya injini imayamba kusinthasintha mozungulira, ndipo ikazungulira madigiri 90, monga momwe chithunzi 2 chikusonyezera:

chithunzi 2

Panthawiyi, burashi ya kaboni ili mumpata pakati pa mphete ziwiri zamkuwa, ndipo kuzungulira konseko kunalibe panopa.Koma pansi pa inertia, rotor ikupitirizabe kuzungulira.

chithunzi 3

Pamene rotor ikutembenukira ku malo omwe ali pamwambawa pansi pa zochita za inertia, mphamvu ya coil ikuwonetsedwa mu Chithunzi 3. Malingana ndi lamulo la kumanzere, buluu la buluu limayendetsedwa ndi mphamvu yamagetsi yokwera pamwamba; koyilo yachikasu imayendetsedwa ndi mphamvu yamagetsi yotsika pansi. Makina ozungulira amoto amapitilira kusinthasintha mozungulira, pambuyo pozungulira madigiri 90, monga momwe chithunzi 4 chikusonyezera:

Chithunzi 4

Panthawiyi, burashi ya kaboni ili mumpata pakati pa mphete ziwiri zamkuwa, ndipo palibe chapano mu chipika chonse cha koyilo.Koma pansi pa inertia, rotor ikupitirizabe kuzungulira.Kenako bwerezani zomwe zili pamwambazi, ndipo kuzungulira kumapitilira.

DC brushless mota

Monga momwe chithunzi 5 chikusonyezera, ichi ndi chithunzi chojambula cha abrushless DC galimoto. Zimapangidwa ndi stator ndi rotor, momwe rotor ili ndi mitengo ya maginito; pali ma seti ambiri a ma coils omwe amabala pa stator, ndipo pali 6 ma seti a coils pachithunzichi.

Chithunzi 5

Tikadutsa panopa ku stator coils 2 ndi 5, ma coils 2 ndi 5 amapanga mphamvu ya maginito. Stator ndi yofanana ndi maginito a bar, pomwe 2 ndi S (South) pole ndi 5 ndi N (North) pole. Popeza mitengo ya maginito ya amuna kapena akazi okhaokha imakopana wina ndi mzake, N pole ya rotor idzazungulira pamalo a coil 2, ndipo S pole ya rotor idzazungulira pa malo a coil 5, monga momwe tawonetsera pa Chithunzi 6.

Chithunzi 6

Ndiye ife timachotsa panopa wa stator koyilo 2 ndi 5, ndiyeno perekani panopa kwa stator koyilo 3 ndi 6. Panthawi imeneyi, koyilo 3 ndi 6 adzapanga maginito, ndipo stator ndi lofanana ndi bar maginito. , pamene 3 ndi S (kum’mwera) mtengo ndipo 6 ndi N (kumpoto). Popeza mitengo ya maginito ya amuna kapena akazi okhaokha imakopana wina ndi mzake, N pole ya rotor idzazungulira mpaka malo a coil 3, ndipo S pole ya rotor idzazungulira pa malo a coil 6, monga momwe tawonetsera pa Chithunzi 7.

Chithunzi 7

Momwemonso, ma coils a stator 3 ndi 6 amachotsedwa, ndipo zamakono zimaperekedwa kwa ma coils a stator 4 ndi 1. Panthawiyi, ma coils 4 ndi 1 adzapanga mphamvu ya maginito, ndipo stator ndi yofanana. ku maginito a bar, kumene 4 ndi mtengo wa S (kum'mwera) ndipo 1 ndi N (kumpoto). Popeza mitengo ya maginito ya amuna kapena akazi okhaokha imakopana wina ndi mzake, N pole ya rotor imazungulira pamalo a coil 4, ndipo S pole ya rotor imazungulira mpaka pomwe coil 1.

Pakadali pano, injini yazungulira theka la bwalo…. Bwalo lachiwiri lachiwiri ndilofanana ndi mfundo yapitayi, kotero sindidzabwereza apa.Titha kumvetsetsa motorless DC motor ngati kusodza karoti kutsogolo kwa bulu, kuti bulu aziyenda nthawi zonse kupita ku karoti.

Ndiye kodi tingadutse bwanji magetsi olondola kumakoyilo osiyanasiyana panthawi zosiyanasiyana? Izi zimafuna mayendedwe aposachedwa…osati zatsatanetsatane apa.

Kuyerekeza ubwino ndi kuipa

DC burashi mota: kuyamba mwachangu, braking panthawi yake, kuwongolera liwiro, kuwongolera kosavuta, kapangidwe kosavuta komanso mtengo wotsika.Mfundo ndi yakuti ndizotsika mtengo!mtengo wotsika!mtengo wotsika!Kuphatikiza apo, ili ndi mphamvu yayikulu yoyambira, torque yayikulu (mphamvu yozungulira) pa liwiro lotsika, ndipo imatha kunyamula katundu wolemetsa.

Komabe, chifukwa cha kukangana pakati pa burashi ya kaboni ndi gawo la commutator, mota ya DC burashi imakonda kutentha, kutentha, phokoso, kusokoneza ma elekitirodi kudera lakunja, kuchepa kwachangu komanso moyo waufupi.Chifukwa maburashi a carbon ndi ogwiritsidwa ntchito, amatha kulephera ndipo amafunika kusinthidwa pakapita nthawi.

Brushless DC motor: Chifukwabrushless DC galimotoimathetsa kufunikira kwa maburashi a carbon, imakhala ndi phokoso lochepa, palibe kukonza, kuchepa kwachangu, moyo wautali wautumiki, nthawi yokhazikika yothamanga ndi magetsi, komanso kusokoneza pang'ono ndi zipangizo zamawailesi. Koma ndi okwera mtengo! Zokwera mtengo! Zokwera mtengo!

Mphamvu Chida Features

Zida zamagetsi ndi zida zomwe zimagwiritsidwa ntchito kwambiri pamoyo. Pali mitundu yambiri komanso mpikisano wowopsa. Aliyense amakhudzidwa kwambiri ndi mtengo.Ndipo zida zamagetsi zimafunikira kunyamula katundu wolemetsa ndipo ziyenera kukhala ndi torque yayikulu, monga kubowola pamanja ndi zobowolera.Kupanda kutero, pobowola, mota imatha kulephera kuthamanga chifukwa chobowolacho chimakakamira.

Tangoganizani, mota ya brushed DC ili ndi mtengo wotsika, torque yayikulu yoyambira, ndipo imatha kunyamula katundu wolemetsa; ngakhale mota ya brushless ili ndi kulephera kochepa komanso moyo wautali, ndiyokwera mtengo, ndipo torque yoyambira ndiyotsika kwambiri kuposa ya mota yopukutidwa.Ngati mutapatsidwa chisankho, mungasankhe bwanji, ndikuganiza kuti yankho likudziwonetsera nokha.

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Nthawi yotumiza: Oct-07-2022