Brushless DC lub cev muaj zog yog DC lub cev muaj zog uas tsis tas yuav muaj cov txhuam hniav siv hauv cov tsoos DC motors.
Piv nrog cov brushed DC motors, brushless DC motors muaj ob qhov zoo hauv qab no.
Lub neej ua haujlwm ntev thiab yog li kev saib xyuas tsawg zaus.
tsis muaj suab nrov
Cov txhuam hniav siv hauv txhuam DC motors yog nyob rau hauv kev sib cuag nrog lub commutator. Kev hloov tsis tu ncua yuav tsum tau ua raws li kev sib hloov lub cev muaj zog ua rau cov txhuam hniav thiab cov commutators hnav dhau sijhawm. Lub neej luv luv thiab kev saib xyuas yuav tsum yog qhov tsis zoo ntawm cov motors. Nyob rau hauv sib piv, vim BLDC motors tsis siv cov consumable commutators thiab txhuam, lawv muaj ib tug ntev lifespan thiab tsis tshua muaj ntau zaus. Yog li ntawd, qhov zaus ntawm kev siv brushless DC motors tau nce siab dua.
Qhov tseeb tias brushless DC motors tsis siv commutators thiab txhuam kuj txhais tau hais tias hluav taws xob thiab acoustic suab nrov los ntawm kev sib cuag ntawm cov khoom no raug tshem tawm. Yog li ntawd, brushless DC motors ua haujlwm ntsiag to heev.
Dab tsi yog brushless DC motors siv?
Brushless DC motors muab kev ua haujlwm ntsiag to, lub neej ntev thiab kev saib xyuas tsis zoo thiab tuaj yeem siv rau ntau yam kev siv. Cov piv txwv muaj xws li cov khoom siv hauv tsev xws li cua txias, cua purifiers, thiab tub yees.
Cov motors no kuj tau siv rau hauv ntau yam khoom lag luam, nrog rau cov tshuab luam ntawv, cov tshuab muag khoom, lub tshuab rhaub dej, thiab cov projectors. Nrog rau lwm yam kev siv xws li tsheb thiab kev lag luam loj, brushless DC motors tau dhau los ua ib feem tseem ceeb ntawm peb lub neej.
Puas yog brushless DC lub cev muaj zog xav tau kev tsav tsheb?
Raws li tau hais los saum no, kev tswj hluav taws xob yuav tsum tau tsav lub BLDC lub cev muaj zog, tsis yog kev tswj xyuas txhua yam. Yog vim li cas rau qhov no tuaj yeem piav qhia los ntawm qhov sib txawv ntawm lub cim ntawm rotating magnetic teb nyob rau hauv brushless DC motors los ntawm lwm cov motors.
Txhawm rau ua kom lub cev muaj zog, koj yuav tsum tau hloov cov kev taw qhia ntawm qhov tam sim no ntws los ntawm lub cev muaj zog windings thiab tsim kom muaj qhov sib nqus sib nqus. Thaum induction motors thiab lwm lub cev muaj zog uas tau tsav los ntawm AC lub zog tuaj yeem siv AC lub zog hluav taws xob kom ua tiav qhov no, DC-tsav motors xav tau qee hom kev hloov pauv hloov cov kev taw qhia ntawm tam sim no hauv lub cev muaj zog, yog li tsim kom muaj qhov sib nqus sib nqus.
Nyob rau hauv cov ntaub ntawv ntawm brushed DC motors, qhov no yog tiav los ntawm kev siv txhuam thiab commutators. Txawm li cas los xij, nrog brushless DC motors, es tsis txhob siv cov txhuam hniav luv luv, qhov kev hloov ntawm tam sim no thiab qhov tshwm sim rotating magnetic teb yog tiav los ntawm semiconductor keyboards xws li bipolar transistors lossis FETs. Lub neej tsis yog teeb meem loj.
Coil configuration thiab switching rau brushless DC motors
Brushless DC motors feem ntau muaj peb coils. Ib qho kawg ntawm peb lub coils txuas nrog ua ke, yog li los ntawm kev sib txuas ntawm lwm qhov kawg ntawm ib lub kauj mus rau qhov zoo thiab qhov kawg ntawm lwm qhov mus rau qhov tsis zoo, tam sim no ntws los ntawm ob lub coils. Ob lub tshuab hluav taws xob semiconductor txuas nrog txhua lub kauj, ib qho mus rau qhov zoo thiab lwm qhov rau qhov tsis zoo. Qhov no muab tag nrho ntawm rau lub keyboards uas, thaum qhib thiab kaw hauv qhov kev txiav txim kom raug, ua rau lub cev muaj zog tig. Lub sijhawm ntawm qhov kev hloov pauv no yog txiav txim siab los ntawm rotor orientation pom los ntawm Hall sensors.
Nyob rau hauv lwm yam lus, tig semiconductor switches rau thiab tawm nyob rau hauv qhov tseeb ib theem zuj zus tsim ib tug rotating magnetic teb uas spin ib brushless DC lub cev muaj zog. Yog li ntawd, tus tsav tsheb Circuit Court yuav tsum tau ua raws li cov kauj ruam no.
Cov muaj pes tsawg leeg ntawm brushless DC motor tsav Circuit Court
Lub tshuab tsav hluav taws xob muaj cov khoom tseem ceeb hauv qab no.
Rotary txoj hauj lwm sensor
Hall sensors rau ntes N thiab S ncej ntawm cov hlau nplaum rotor.
position detection Circuit Court
Ib lub voj voog uas hloov lub teeb liab ntawm Hall sensor mus rau lub teeb liab digital logic.
logic Circuit Court
Raws li lub teeb liab los ntawm rotor txoj hauj lwm nrhiav kom tau sensor, lub Circuit Court outputs ib theem uas tswj cov kev taw qhia ntawm tam sim no ntws los ntawm txhua kauj.
ua ntej tsav tsheb circuit
Ib lub voj voog uas hloov cov teeb liab sib txuas mus rau hauv ib lub teeb liab siv los tig semiconductor switches rau thiab tawm.
semiconductor hloov
Feem ntau yog siv rau lub tshuab hluav taws xob semiconductor. Lawv qhib thiab tawm raws li cov cim sib txuas kom tso cai rau tam sim no ntws los ntawm cov coils xav tau los tig lub cev muaj zog.
Lub cev muaj zog tsav
Lub hwj chim mov yuav tsum tau muab tam sim no los ntawm lub cev muaj zog coils thiab lub zog rau cov logic thiab sensor circuits.
Nyob rau hauv txoj kev no, txawm hais tias yuav tsum tau tsav lub voj voog, brushless DC motors muaj kev ua haujlwm siab vim tias lawv tsis raug kev txom nyem los ntawm lub suab nrov thiab lub neej luv luv ntawm brushed DC motors.
Kawm paub ntxiv txog yuav ua li cas brushless DC motors tswj
Vim tias lawv tsis siv cov commutators thiab txhuam, tsav tsheb brushless DC motors yuav tsum tau siv hluav taws xob tswj tsis yog siv lub tshuab siv tshuab, uas yog ua los ntawm kev tsav tsheb. Lub tshuab hluav taws xob tsav yog tsim los ntawm lub ntsuas qhov ntsuas qhov ntsuas, qhov ntsuas qhov ntsuas hluav taws xob, lub logic Circuit Court, lub tshuab ua ntej tsav, lub tshuab hluav taws xob semiconductor, thiab lub zog tsav lub zog. Txhua tus neeg ua haujlwm hauv kev tsim hluav taws xob uas suav nrog brushless DC motors yuav tsum muaj kev nkag siab tob txog dab tsi txhua yam ua. Peb cia siab tias cov ntaub ntawv muab ntawm no yuav pab tau rau koj.
