Brushless motors yog ntau yam hluav taws xob motors uas, tsis zoo li cov pa txhuam los yog thee motors, tshem tawm cov hluav taws xob hauv brushless motors tsub kom cov efficiency thiab ntev ntawm cov motors piv rau cov pa hluav taws xob cav.
Vim muaj ntau qhov zoo ntawm brushless motors, Peb ntau cov cuab yeej siv brushless motors nrog koj nrog lawv lub zog tshwj xeeb hauv txhua qhov xwm txheej. Lub neej ntev, lub teeb yuag thiab tsis tshua muaj suab nrov yog cov yam ntxwv uas paub qhov txawv ntawm cov cav no los ntawm cov tshuab hluav taws xob hluav taws xob.
Cov Motors lwm yam yog Fais fab xa tshuab
Thaum cov engineers tau ntsib nrog kev sib tw ntawm kev tsim cov khoom siv hluav taws xob los ua cov haujlwm ua haujlwm, lawv yuav xav txog yuav ua li cas cov teeb liab hluav taws xob hloov mus rau lub zog. Yog li actuators thiab motors yog ntawm cov khoom siv uas hloov hluav taws xob teeb liab mus rau hauv kev txav. Motors pauv hluav taws xob hluav taws xob rau txhua yam zog.
Qhov yooj yim tshaj plaws ntawm lub cev muaj zog yog brushed DC lub cev muaj zog. Nyob rau hauv hom no lub cev muaj zog, hluav taws xob tam sim no yog dhau los ntawm coils uas tau teem rau hauv ib qho chaw sib nqus ruaj khov. Cov tam sim no generates magnetic teb nyob rau hauv lub coils; Qhov no ua rau lub coil sib dhos tig, vim tias txhua lub kauj yog thawb tawm ntawm tus ncej zoo li thiab rub mus rau qhov tsis zoo li tus ncej ntawm qhov chaw ruaj khov. Txhawm rau tswj kev sib hloov, nws yog qhov yuav tsum tau txuas ntxiv thim rov qab tam sim no - yog li cov coil polarities yuav txuas ntxiv tig, ua rau cov coils txuas ntxiv "chasing" tsis zoo li cov ncej ruaj khov. Lub hwj chim rau cov coils yog muab los ntawm cov khoom siv hluav taws xob ruaj khov uas ua rau kev sib cuag nrog lub rotating commutator; Nws yog qhov kev sib hloov ntawm lub commutator uas ua rau kev thim rov qab ntawm cov tam sim no los ntawm cov coils. Cov commutator thiab txhuam hniav yog cov khoom tseem ceeb ntawm qhov sib txawv ntawm cov DC lub cev muaj zog los ntawm lwm hom lub cev muaj zog. Daim duab 1 qhia txog lub hauv paus ntsiab lus ntawm kev txhuam lub cev muaj zog.
Daim duab 1: Kev ua haujlwm ntawm Brushed DC Tsav.
Tsau txhuam muab lub zog hluav taws xob rau lub rotating commutator. Raws li lub commutator tig, nws txuas ntxiv tig cov kev taw qhia ntawm tam sim no rau hauv cov coils, thim rov qab cov coil polarities kom cov coils tswj txoj kev sib hloov. Lub commutator tig vim nws txuas nrog lub rotor uas cov coils tau mounted.
Cov motors txawv raws li lawv hom fais fab (AC lossis DC) thiab lawv txoj kev tsim kev sib hloov (Daim duab 2). Hauv qab no, peb saib luv luv ntawm cov yam ntxwv thiab kev siv ntawm txhua hom.
Ntau hom Motors
Brushed DC motors, featuring yooj yim tsim thiab tswj tau yooj yim, yog dav siv los qhib thiab kaw cov tais diav. Hauv tsheb, lawv feem ntau yog siv rau kev thim rov qab, txuas ntxiv, thiab tso qhov hluav taws xob sab hauv qhov rais. Tus nqi qis ntawm cov motors no ua rau lawv haum rau ntau yam kev siv. Ib qho tsis zoo, txawm li cas los xij, yog cov txhuam hniav thiab cov commutators nyiam hnav sai heev vim lawv qhov kev sib cuag txuas mus ntxiv, yuav tsum tau hloov ntau zaus thiab tu ncua sij hawm.
Stepper lub cev muaj zog yog tsav los ntawm pulses; nws tig los ntawm ib lub kaum ntse ntse (kauj ruam) nrog txhua tus mem tes. Vim tias qhov kev sib hloov tau raug tswj xyuas los ntawm tus naj npawb ntawm cov pulses tau txais, cov motors no tau siv dav los siv cov kev hloov kho qhov chaw. Lawv feem ntau siv, piv txwv li, los tswj cov ntawv pub rau hauv lub tshuab fax thiab tshuab luam ntawv - txij li cov khoom siv no pub ntawv rau hauv cov kauj ruam ruaj khov, uas yooj yim cuam tshuam nrog cov mem tes suav. Kev ncua kuj tuaj yeem tswj tau yooj yim, vim tias lub cev muaj zog tig nres tam sim ntawd thaum lub teeb liab pulse cuam tshuam.
Nrog synchronous motors, kev sib hloov yog synchronous nrog cov zaus ntawm cov khoom tam sim no. Cov motors no feem ntau yog siv los tsav lub rotating tais hauv microwave ncu; txo cov iav hauv lub cev muaj zog tuaj yeem siv tau kom tau txais cov kev sib hloov ceev kom cov zaub mov kub. Nrog induction motors, ib yam nkaus, kev sib hloov ceev sib txawv nrog zaus; tab sis lub zog tsis synchronous. Yav dhau los, cov motors no feem ntau siv hauv cov kiv cua hluav taws xob thiab tshuab ntxhua khaub ncaws.
Muaj ntau hom kev siv lub cev muaj zog. Hauv qhov kev sib tham no, peb saib qhov zoo thiab kev siv ntawm brushless DC motors.
Vim li cas BLDC Motors tig?
Raws li lawv lub npe implies, brushless DC motors tsis siv txhuam. Nrog txhuam cov motors, cov txhuam hniav xa tawm tam sim no los ntawm commutator mus rau hauv cov coils ntawm lub rotor. Yog li yuav ua li cas lub cev tsis muaj zog hla tam sim no mus rau rotor coils? Nws tsis yog - vim hais tias cov coils tsis nyob ntawm lub rotor. Hloov chaw, lub rotor yog cov hlau nplaum ruaj khov; cov coils tsis tig, tab sis hloov kho nyob rau hauv qhov chaw ntawm stator. Vim tias cov coils tsis txav mus los, tsis tas yuav muaj cov txhuam hniav thiab cov commutator. (Saib daim duab 3.)
Nrog rau lub cev muaj zog txhuam, kev sib hloov yog ua tiav los ntawm kev tswj cov chaw sib nqus tsim los ntawm cov coils ntawm lub rotor, thaum lub magnetic teb generated los ntawm cov hlau nplaum nyob ruaj ruaj. Txhawm rau hloov qhov kev sib hloov ceev, koj hloov qhov voltage rau cov coils. Nrog lub BLDC lub cev muaj zog, nws yog cov hlau nplaum ruaj khov uas tig; Kev sib hloov yog ua tiav los ntawm kev hloov cov kev taw qhia ntawm cov magnetic teb generated los ntawm ib puag ncig nyob ruaj ruaj coils. Txhawm rau tswj qhov kev sib hloov, koj kho qhov loj thiab kev taw qhia ntawm tam sim no rau hauv cov coils.
Txij li thaum lub rotor yog cov hlau nplaum ruaj khov, nws xav tau tsis muaj tam sim no, tshem tawm qhov xav tau ntawm txhuam thiab commutator. Tam sim no rau cov coils ruaj khov yog tswj los ntawm sab nraud.
Qhov zoo ntawm BLDC Motors
Lub BLDC lub cev muaj zog nrog peb lub kauj ntawm lub stator yuav muaj rau lub xov tooj hluav taws xob (ob rau txhua lub kauj) txuas los ntawm cov kauj no. Hauv kev siv feem ntau peb ntawm cov xov hlau no yuav txuas nrog sab hauv, nrog rau peb qhov txuas ntxiv txuas ntxiv ntawm lub cev lub cev (piv txwv li ob lub xov hlau txuas ntxiv los ntawm lub tshuab txhuam txhuam tau piav qhia ua ntej). Kev xaim hauv BLDC lub cev muaj zog yog qhov nyuaj dua li tsuas yog txuas lub zog ntawm tes qhov zoo thiab qhov tsis zoo; peb yuav saib ze ze ntawm yuav ua li cas cov motors ua hauj lwm nyob rau hauv qhov kev sib kho thib ob ntawm no series. Hauv qab no, peb xaus los ntawm kev saib qhov zoo ntawm BLDC motors.
Ib qho txiaj ntsig loj yog qhov ua tau zoo, vim tias cov motors no tuaj yeem tswj tsis tu ncua ntawm qhov siab tshaj plaws kev sib hloov quab yuam (torque). Brushed motors, nyob rau hauv sib piv, ncav cuag lub siab tshaj plaws torque ntawm tsuas yog qee cov ntsiab lus hauv kev sib hloov. Rau lub cev muaj zog txhuam kom xa cov torque tib yam li cov qauv tsis txhuam, nws yuav tsum tau siv cov hlau nplaum loj dua. Qhov no yog vim li cas txawm tias me me BLDC motors tuaj yeem xa cov hwj chim loj.
Qhov thib ob qhov txiaj ntsig loj - cuam tshuam rau thawj - yog kev tswj hwm. BLDC lub cev muaj zog tuaj yeem tswj tau, siv cov tswv yim tawm tswv yim, kom xa tawm qhov xav tau torque thiab kev sib hloov ceev. Precision tswj nyob rau hauv lem yuav txo tau lub zog noj thiab tshav kub tiam, thiab - nyob rau hauv cov ntaub ntawv uas motors yog roj teeb powered - lengthens lub roj teeb lub neej.
BLDC motors kuj muaj kev ua haujlwm siab thiab tsis tshua muaj suab nrov, ua tsaug rau qhov tsis muaj txhuam. Nrog txhuam cov motors, cov txhuam hniav thiab cov commutator hnav los ntawm kev sib cuag mus tas li, thiab tseem ua rau muaj qhov cuam tshuam rau qhov chaw sib cuag. Cov suab nrov hluav taws xob, tshwj xeeb, yog qhov tshwm sim ntawm cov hluav taws xob muaj zog uas zoo li tshwm sim ntawm thaj chaw uas cov txhuam hniav hla dhau qhov khoob hauv lub commutator. Qhov no yog vim li cas BLDC motors feem ntau suav hais tias yog qhov zoo dua hauv cov ntawv thov uas nws tseem ceeb kom tsis txhob muaj suab nrov hluav taws xob.
Cov ntawv thov zoo tshaj plaws rau BLDC Motors
Peb tau pom tias BLDC motors muaj kev ua haujlwm siab thiab tswj tau, thiab lawv muaj lub neej ua haujlwm ntev. Yog li ntawd lawv zoo rau dab tsi? Vim lawv txoj kev ua tau zoo thiab kev ua haujlwm ntev, lawv tau siv dav hauv cov khoom siv uas khiav tsis tu ncua. Lawv tau ntev tau siv rau hauv tshuab ntxhua khaub ncaws, cua txias, thiab lwm yam khoom siv hluav taws xob; thiab tsis ntev los no, lawv tau tshwm sim hauv cov kiv cua, qhov uas lawv cov kev ua haujlwm siab tau ua rau muaj kev txo qis hauv kev siv hluav taws xob.
Lawv kuj raug siv los tsav lub tshuab nqus tsev. Nyob rau hauv ib rooj plaub, qhov kev hloov pauv hauv kev tswj hwm tau ua rau muaj kev dhia loj hauv kev sib hloov ceev-ib qho piv txwv ntawm kev tswj hwm zoo tshaj plaws uas muaj los ntawm cov motors.
BLDC motors kuj tau siv los tig cov hard disk drives, qhov twg lawv cov kav ntev ua rau cov tsav tsheb ua haujlwm tau zoo nyob rau lub sijhawm ntev, thaum lawv lub zog siv hluav taws xob ua rau txo qis hauv thaj chaw uas qhov no tseem ceeb dua.
Rau kev siv dav dua yav tom ntej
Peb tuaj yeem cia siab tias yuav pom BLDC motors siv nyob rau hauv ntau yam kev siv yav tom ntej. Piv txwv li, tej zaum lawv yuav tau siv dav los tsav cov kev pabcuam neeg hlau - cov neeg hlau me me uas xa cov kev pabcuam hauv thaj chaw uas tsis yog kev tsim khoom. Ib tug yuav xav tias stepper motors yuav zoo dua nyob rau hauv daim ntawv thov no, qhov twg pulses yuav siv tau los tswj qhov chaw. Tab sis BLDC motors tau zoo dua los tswj lub zog. Thiab nrog lub cev muaj zog stepper, tuav txoj hauj lwm ntawm cov qauv xws li ib tug neeg hlau caj npab yuav xav tau ib tug kuj loj thiab nruam tam sim no. Nrog lub BLDC lub cev muaj zog, txhua yam uas yuav tsum tau muaj yog tam sim no sib npaug rau sab nraud quab yuam - tso cai rau kev tswj hwm lub zog ntau dua. BLDC motors kuj tseem yuav hloov tau yooj yim txhuam dc motors hauv cov tsheb golf thiab tsheb thauj mus los. Ntxiv nrog rau lawv cov kev ua tau zoo dua, BLDC motors kuj tuaj yeem xa cov kev tswj xyuas meej dua-uas tuaj yeem txuas ntxiv roj teeb lub neej.
BLDC motors kuj zoo tagnrho rau cov drones. Lawv lub peev xwm los xa cov kev tswj xyuas qhov tseeb ua rau lawv tshwj xeeb tshaj yog haum rau multirotor drones, qhov twg lub drone tus cwj pwm yog tswj los ntawm kev tswj cov kev sib hloov ceev ntawm txhua lub rotor.
Hauv qhov kev sib tham no, peb tau pom li cas BLDC motors muab kev ua haujlwm zoo, tswj tau, thiab ua haujlwm ntev. Tab sis ceev faj thiab tswj kom raug yog qhov tseem ceeb rau kev ua kom zoo dua ntawm cov motors muaj peev xwm. Hauv peb qhov kev sib tham tom ntej, peb yuav saib seb cov motors no ua haujlwm li cas.
Post lub sij hawm: Aug-21-2023