xov xwm

1. Txhuam dc lub cev muaj zog

Nyob rau hauv brushed motors qhov no yog ua nrog ib tug teb hloov ntawm lub cev muaj zog ncej hu ua commutator.Nws muaj lub rotating lub tog raj kheej los yog disc muab faib ua ntau yam hlau hu rau ntawm lub rotor.Cov ntu yog txuas nrog tus neeg xyuas pib windings ntawm lub rotor.Ob lossis ntau qhov chaw nyob ruaj khov hu ua txhuam, ua los ntawm cov khoom muag muag xws li graphite, nias tawm tsam lub commutator, ua zawv zawg hluav taws xob tiv tauj nrog cov ntu txuas ntxiv thaum lub rotor tig.Cov txhuam hniav xaiv muab hluav taws xob tam sim no rau cov windings.Raws li lub rotor rotates, lub commutator xaiv txawv windings thiab cov kev taw qhia tam sim no yog siv rau ib tug muab winding xws li hais tias lub rotor lub magnetic teb tseem misaligned nrog lub stator thiab tsim ib tug torque nyob rau hauv ib qho kev taw qhia.

2. Brushless dc lub cev muaj zog

Hauv brushless DC motors, ib qho hluav taws xob servo system hloov cov neeg kho tshuab commutator hu.Ib qho hluav taws xob sensor pom lub kaum sab xis ntawm lub rotor thiab tswj cov khoom siv semiconductor xws li transistors uas hloov tam sim no los ntawm cov windings, xws li thim rov qab cov kev taw qhia ntawm tam sim no lossis, qee lub motors tig tawm, ntawm lub kaum sab xis kom cov electromagnets tsim torque hauv ib qho. kev taw qhia.Kev tshem tawm cov zawv zawg sib cuag tso cai rau cov motors tsis muaj txhuam kom muaj kev sib txhuam tsawg dua thiab lub neej ntev dua;lawv lub neej ua haujlwm tsuas yog txwv los ntawm lub neej ntawm lawv cov kabmob.

Brushed DC motors tsim lub siab tshaj plaws torque thaum nyob ruaj ruaj, linearly txo qis raws li qhov nrawm nce.Qee qhov kev txwv ntawm brushed motors tuaj yeem kov yeej los ntawm brushless motors;lawv suav nrog kev ua haujlwm siab dua thiab qis dua rau kev siv tshuab.Cov txiaj ntsig no tuaj ntawm tus nqi ntawm cov khoom siv hluav taws xob uas tsis tshua muaj rugged, complex, thiab kim dua tswj hluav taws xob.

Ib tug raug brushless lub cev muaj zog muaj hlau nplaum ruaj khov uas tig ib ncig ntawm lub armature ruaj, tshem tawm cov teeb meem cuam tshuam nrog kev txuas tam sim no mus rau qhov txav armature.Ib lub tshuab hluav taws xob hloov pauv lub commutator los ua ke ntawm brushed DC lub cev muaj zog, uas txuas ntxiv hloov cov theem mus rau windings kom lub cev muaj zog tig.Tus maub los ua qhov zoo sib xws ntawm lub sijhawm xa hluav taws xob los ntawm kev siv lub zog-xeev Circuit Court es tsis yog lub commutator system.

Brushless motors muaj ntau qhov zoo ntawm brushed DC motors, nrog rau siab torque rau qhov hnyav piv, nce efficiency ua ntau dua torque ib watt, muaj kev ntseeg siab, txo suab nrov, lub neej ntev los ntawm kev tshem tawm txhuam thiab commutator yaig, tshem tawm ntawm ionizing sparks los ntawm lub
commutator, thiab txo tag nrho ntawm electromagnetic cuam tshuam (EMI).Tsis muaj windings ntawm lub rotor, lawv tsis raug rau centrifugal quab yuam, thiab vim hais tias cov windings tau txais kev txhawb nqa los ntawm lub tsev, lawv tuaj yeem ua kom txias los ntawm kev ua, tsis tas yuav muaj cua nkag hauv lub cev kom txias.Qhov no nyob rau hauv lem txhais tau hais tias lub cev muaj zog lub internals yuav tsum tau enclosed thiab tiv thaiv los ntawm av los yog lwm yam txawv teb chaws teeb meem.

Brushless motor commutation tuaj yeem siv rau hauv software siv microcontroller, lossis tej zaum yuav raug siv los siv analog lossis digital circuits.Kev sib txuas nrog cov khoom siv hluav taws xob tsis siv cov txhuam hniav tso cai rau kev ua kom yooj yim dua thiab muaj peev xwm tsis muaj nrog txhuam DC lub cev muaj zog, suav nrog kev txwv ceev, kev ua haujlwm microstepping rau kev tswj qeeb thiab zoo, thiab tuav lub zog thaum nyob ruaj ruaj.Controller software tuaj yeem hloov kho rau lub cev tshwj xeeb uas siv hauv daim ntawv thov, ua rau muaj kev sib hloov ntau dua.

Lub zog siab tshaj plaws uas tuaj yeem siv rau lub cev tsis muaj zog yog txwv yuav luag tsuas yog los ntawm tshav kub; [tsim xav tau] cov cua sov ntau dhau ua rau cov hlau nplaum tsis muaj zog thiab yuav ua rau cov cua ntsawj ntshab puas.

Thaum hloov hluav taws xob mus rau hauv lub tshuab hluav taws xob, lub tshuab tsis siv lub tshuab tsis muaj zog muaj txiaj ntsig zoo dua li cov tshuab txhuam txhuam feem ntau vim tsis muaj txhuam, uas txo cov khoom siv hluav taws xob vim kev sib txhuam.Qhov kev ua kom zoo dua qub yog qhov zoo tshaj plaws hauv qhov tsis muaj-load thiab qis-load ntawm lub cev muaj zog qhov kev ua haujlwm nkhaus.

Ib puag ncig thiab cov kev xav tau uas cov tuam txhab siv brushless-hom DC motors suav nrog kev ua haujlwm tsis muaj kev saib xyuas, kev ua haujlwm siab, thiab kev ua haujlwm qhov chaw ua rau muaj kev phom sij (piv txwv li qhov chaw tawg) lossis tuaj yeem cuam tshuam rau cov khoom siv hluav taws xob.

Kev tsim kho lub cev tsis muaj zog zoo ib yam li lub cev muaj zog stepper, tab sis cov motors muaj qhov sib txawv tseem ceeb vim qhov sib txawv ntawm kev siv thiab kev ua haujlwm.Thaum lub sij hawm stepper motors nquag nres nrog lub rotor nyob rau hauv ib tug txhais angular txoj hauj lwm, ib tug brushless lub cev muaj zog feem ntau yog npaj los tsim kev sib hloov mus tas li.Ob hom lub cev muaj zog tuaj yeem muaj lub rotor txoj hauj lwm sensor rau kev tawm tswv yim sab hauv.Ob lub stepper lub cev muaj zog thiab lub cev muaj zog tsis zoo tsim tuaj yeem tuav lub zog kawg ntawm xoom RPM.