Dab tsi yog qhov txawv ntawm DC lub cev muaj zog thiab DC lub cev muaj zog? Qhov no yog ib lo lus nug uas ntau tus neeg hauv kev lag luam hluav taws xob thiab DIY cov neeg nyiam tuaj yeem nug lawv tus kheej, tshwj xeeb tshaj yog thaum lawv sim tsim lossis kho cov khoom siv hluav taws xob. Cov lus teb tsis yog ib txwm ncaj nraim, vim muaj ntau yam los xav txog thaum sib txawv ntawm ob hom motors. Hauv tsab xov xwm no, peb yuav tshawb txog qhov sib txawv ntawm brushed DC motors thiab DC motors kom ntxaws, kom koj thiaj li muaj kev nkag siab zoo ntawm txhua tus ua haujlwm li cas, thiab qhov twg yuav zoo dua rau koj daim ntawv thov tshwj xeeb.
** Lub hauv paus ntawm DC Motors
Pib nrog, cia peb qhia meej tias peb txhais li cas los ntawm DC lub cev muaj zog. Feem ntau, DC lub cev muaj zog yog ib hom tshuab hluav taws xob uas tsim los hloov hluav taws xob hluav taws xob rau hauv lub tshuab hluav taws xob. Muaj ntau ntau qhov sib txawv ntawm DC motors, txhua tus muaj nws tus kheej zoo thiab qhov tsis zoo.
Nyob rau hauv DC lub cev muaj zog, hluav taws xob tam sim no yog muab rau ib txheej coils los yog windings, uas yog positioned nyob rau hauv ib tug magnetic teb. Raws li qhov tam sim no dhau los ntawm cov coils, nws tsim ib qho chaw sib nqus uas cuam tshuam nrog sab nraud magnetic teb, ua rau lub zog torque lossis kev sib hloov. Qhov no torque yog ces pauv mus rau ib tug neeg kho tshuab load, xws li lub log los yog iav, uas ua rau lub cev muaj zog tig.
Muaj ob lub ntsiab ntawm DC motors: brushed DC motors thiab brushless DC motors. Brushed DC motors kuj tseem hu ua cov pa roj carbon monoxide lossis tsoos DC motors, thaum brushless DC motors qee zaum hu ua hluav taws xob sib hloov motors.
**Brushed DC Motors
Cia thawj zaug tsom ntsoov rau brushed DC motors. Cov motors no muaj npe vim hais tias lawv siv txhuam, los yog cov pa roj carbon monoxide, hloov hluav taws xob tam sim no los ntawm lub zog hluav taws xob mus rau qhov sib hloov armature. Cov txhuam hniav yog nyob rau hauv kev sib cuag ncaj qha nrog lub commutator, uas yog ib tug segmented hlau nplhaib uas ua hauj lwm raws li kev sib txuas ntawm cov coils thiab cov txhuam hniav.
Thaum cov hluav taws xob tam sim no nkag mus rau cov txhuam hniav, nws ntws los ntawm cov coils, tsim kom muaj qhov sib nqus. Qhov no magnetic teb rub lub armature ntawm nws, ua rau nws tig. Raws li lub armature spin, nws cov coils hla dhau cov ntu ntu, uas hloov cov ntws tam sim no mus rau cov coils sib txawv hauv ib ntu tshwj xeeb, kom ntseeg tau tias armature txuas ntxiv tig mus rau tib txoj kev.
Muaj ntau qhov zoo rau kev siv lub tshuab DC brushed. Ib qho txiaj ntsig yog tias lawv yooj yim thiab yooj yim los tswj, ua rau lawv zoo haum rau ntau hom kev siv. Lawv kuj tseem pheej yig, thiab dav muaj. Tsis tas li ntawd, brushed DC motors muaj peev xwm muab cov qib siab ntawm torque ntawm qis ceev, ua rau lawv zoo tagnrho rau cov dej num uas yuav tsum tau muaj qib siab ntawm kev txiav txim siab thiab kev tswj hwm, xws li cov neeg hlau lossis cov haujlwm nyiam xws li cov qauv tsheb ciav hlau.
Txawm li cas los xij, kuj tseem muaj ntau qhov tsis zoo rau kev siv lub tshuab DC brushed. Ib qho ntawm qhov tsis zoo yog tias cov txhuam hniav thiab cov commutator xav tau kev saib xyuas thiab hloov pauv tsis tu ncua, vim tias lawv tuaj yeem hnav dhau sijhawm. Qhov no tuaj yeem ua rau lawv tsis tshua muaj kev ntseeg siab, tshwj xeeb tshaj yog hauv kev ua haujlwm siab. Tsis tas li ntawd, brushed DC motors nyiam tsim hluav taws xob ntau, uas tuaj yeem cuam tshuam nrog lwm yam khoom siv hluav taws xob.
** Brushless DC Tsav
Tam sim no cia peb tig mus rau brushless DC motors (BLDC). Raws li tau hais ua ntej lawm, brushless DC motors qee zaum hu ua hluav taws xob hloov hluav taws xob, vim lawv siv hluav taws xob hluav taws xob los tswj lub cev muaj zog hloov pauv hloov ntawm txhuam thiab lub tshuab hluav taws xob.
Nyob rau hauv lub cev tsis muaj zog DC, hluav taws xob tam sim no tau muab rau lub cev muaj zog stator, uas yog ib qho chaw ruaj khov ntawm cov coils uas nyob ib puag ncig lub rotor tig. Lub rotor muaj ib txheej ntawm cov hlau nplaum ruaj khov uas tsim cov hlau nplaum sib nqus uas cuam tshuam nrog lub stator's magnetic teb, tsim lub torque uas tsav lub cev muaj zog.
Txhawm rau tswj cov kev sib hloov ntawm lub cev muaj zog, lub tshuab hluav taws xob siv hluav taws xob yog siv los hloov qhov tam sim no ntws mus rau cov coils sib txawv hauv lub stator ntawm lub sijhawm, thiaj li tswj tau lub cev muaj zog tig mus rau qhov xav tau. Cov txheej txheem no yog hu ua hluav taws xob commutation, thiab nws tshem tawm qhov xav tau ntawm cov txhuam hniav thiab cov commutator.
Muaj ntau qhov zoo rau kev siv lub tshuab tsis muaj DC lub cev muaj zog. Ib qho ntawm cov txiaj ntsig tseem ceeb yog tias lawv muaj kev ntseeg siab dua thiab yuav tsum muaj kev saib xyuas tsawg dua li txhuam DC motors, vim tias tsis muaj txhuam los hnav. Tsis tas li ntawd, brushless DC motors zoo li yuav ua tau zoo dua, vim lawv nkim zog tsawg dua li cua sov. Lawv kuj zoo li tsim hluav taws xob tsawg dua, ua rau lawv tsim nyog siv rau hauv cov khoom siv hluav taws xob rhiab heev.
Txawm li cas los xij, kuj tseem muaj ntau qhov tsis zoo rau kev siv lub tshuab tsis muaj DC. Ib qho tsis zoo yog tias lawv feem ntau kim dua li txhuam DC motors, vim qhov nyuaj ntawm lawv cov hluav taws xob tswj circuits. Tsis tas li ntawd, brushless DC motors zoo li muaj qis dua ntawm lub zog qis ntawm qhov nrawm, uas yuav ua rau lawv tsis tshua haum rau cov ntawv thov uas xav tau kev tswj xyuas meej.
** Lus xaus
Yog li, dab tsi yog qhov txawv ntawm DC lub cev muaj zog thiab DC lub cev muaj zog? Qhov sib txawv tseem ceeb nyob hauv txoj kev uas txhua lub cev muaj zog tswj tau. Brushed DC motors siv txhuam thiab lub tshuab hluav taws xob los hloov hluav taws xob tam sim no, thaum brushless DC motors siv hluav taws xob circuits los tswj lub cev muaj zog.
Muaj qhov zoo thiab qhov tsis zoo rau ob hom motors, nyob ntawm seb cov kev cai tshwj xeeb ntawm koj daim ntawv thov. Yog tias koj xav tau lub zog siab ntawm qhov qis qis, ces lub tshuab DC brushed yuav yog qhov kev xaiv zoo tshaj plaws. Yog tias koj xav tau lub cev muaj zog uas txhim khu kev qha thiab xav tau kev saib xyuas tsawg dua, ces lub cev muaj zog DC brushless yuav yog qhov kev xaiv zoo dua.
Feem ntau, txawm li cas los xij, brushless DC motors tau dhau los ua neeg nyiam, vim tias kev nce qib hauv kev tswj hluav taws xob thiab cov ntaub ntawv tshawb fawb tau ua rau lawv muaj txiaj ntsig zoo, txhim khu kev qha, thiab tus nqi zoo. Raws li thev naus laus zis txuas ntxiv mus, peb tuaj yeem cia siab tias yuav pom ntau thiab ntau daim ntawv thov rau ob hom motors nyob rau xyoo tom ntej.