Tau ntau xyoo, peb tau pom brushless motors pib dominate lub cordless cuab tam tsav nyob rau hauv kev lag luam cuab yeej cuab tam. Qhov no zoo heev, tab sis dab tsi yog qhov loj? Puas yog nws tseem ceeb heev yog tias kuv tuaj yeem tsav tus ntoo ntsia hlau? um, yog. Muaj qhov sib txawv tseem ceeb thiab cuam tshuam thaum cuam tshuam nrog cov motors brushed thiab brushless motors.
Ua ntej peb delve rau hauv ob-ko taw txhuam thiab brushless motors, cia peb ua ntej nkag siab txog cov kev paub txog kev ua haujlwm tiag tiag ntawm DC motors. Thaum nws los txog rau kev tsav tsheb, nws yog txhua yam cuam tshuam nrog cov hlau nplaum. Cov hlau nplaum sib nqus sib nqus sib nqus sib nqus. Lub tswv yim tseem ceeb ntawm DC lub cev muaj zog yog ua kom cov hluav taws xob sib txawv ntawm qhov sib hloov (rotor) nyiam rau cov hlau nplaum tsis txav (stator) nyob rau hauv pem hauv ntej ntawm nws, yog li txuas ntxiv rub mus rau pem hauv ntej. Nws yog me ntsis zoo li muab Boston Butter Donut rau ntawm tus pas rau pem hauv ntej ntawm kuv thaum kuv khiav-Kuv yuav ua rau nws lob!
Lo lus nug yog yuav ua li cas kom cov donuts txav mus. Tsis muaj txoj hauv kev yooj yim ua nws. Nws pib nrog ib txheej ntawm cov hlau nplaum tas mus li (cov hlau nplaum tas mus li). Ib txheej ntawm electromagnets hloov pauv tus nqi (rov qab polarity) thaum lawv tig, yog li muaj ib txwm muaj cov hlau nplaum ruaj khov nrog cov nqi sib txawv uas tuaj yeem txav tau. Tsis tas li ntawd, cov nqi zoo sib xws tau ntsib los ntawm electromagnetic coil thaum nws hloov pauv yuav thawb lub kauj tawm. Thaum peb saib cov motors brushed thiab brushless motors, yuav ua li cas cov electromagnet hloov polarity yog qhov tseem ceeb.
Nyob rau hauv ib lub cev muaj zog txhuam, muaj plaub yam tseem ceeb: cov hlau nplaum ruaj khov, armatures, commutating rings thiab txhuam. Cov hlau nplaum ruaj khov ua rau sab nrauv ntawm lub tshuab thiab tsis txav (stator). Ib qho yog qhov zoo them nqi thiab lwm qhov yog qhov tsis zoo, tsim kom muaj qhov chaw sib nqus mus tas li.
Lub armature yog ib co coil los yog ib tug series ntawm coils uas ua ib tug electromagnet thaum energized. Qhov no kuj yog qhov tig (rotor), feem ntau yog ua los ntawm tooj liab, tab sis txhuas kuj siv tau.
Lub nplhaib commutator yog tsau rau lub armature coil nyob rau hauv ob (2-ncej configuration), plaub (4-ncej configuration) los yog ntau tshaj. Lawv tig nrog armature. Thaum kawg, cov txhuam hniav tseem nyob hauv qhov chaw thiab hloov cov nqi mus rau txhua tus commutator.
Thaum lub armature yog energized, lub charged kauj yuav raug rub mus rau oppositely them nyiaj hlau nplaum ruaj khov. Thaum lub nplhaib commutator saum toj no kuj tig, nws txav los ntawm kev sib txuas ntawm ib qho txhuam hniav mus rau lwm qhov. Thaum nws ncav cuag tus txhuam hniav tom ntej, nws yuav tau txais ib qho polarity thim rov qab thiab tam sim no nyiam los ntawm lwm cov hlau nplaum ruaj khov thaum raug repelled los ntawm tib hom hluav taws xob. Tangibly, thaum lub commutator mus txog qhov tsis zoo txhuam, nws yog tam sim no attracted los ntawm qhov zoo mus tas li hlau nplaum. Lub commutator tuaj txog rau lub sijhawm los tsim kev sib txuas nrog cov txhuam zoo electrode thiab ua raws li cov hlau nplaum tsis zoo. Cov txhuam hniav yog nyob rau hauv khub, yog li cov kauj zoo yuav rub mus rau qhov tsis zoo hlau nplaum, thiab cov kauj tsis zoo yuav rub mus rau qhov zoo hlau nplaum tib lub sijhawm.
Nws zoo li kuv yog armature coil chasing Boston Butter Donut. Kuv tau nyob ze, tab sis tom qab ntawd hloov kuv lub siab thiab nrhiav kev noj qab haus huv smoothie (kuv qhov polarity lossis lub siab xav hloov). Tom qab tag nrho, donuts yog nplua nuj nyob rau hauv calorie ntau ntau thiab rog. Tam sim no kuv tab tom nrhiav smoothies thaum raug thawb tawm ntawm Boston cream. Thaum kuv mus txog qhov ntawd, kuv pom tau hais tias donuts zoo dua li smoothies. Ntev npaum li kuv rub tus txhais, txhua zaus kuv mus rau qhov txhuam tom ntej, kuv yuav hloov kuv lub siab thiab tib lub sij hawm caum cov khoom uas kuv nyiam hauv lub voj voog frantic. Nws yog daim ntawv thov kawg rau ADHD. Tsis tas li ntawd, muaj ob peb nyob rau ntawd, yog li Boston Butter Donuts thiab Smoothies yeej ib txwm caum txaus siab los ntawm peb ib tug, tab sis indecisive.
Nyob rau hauv ib lub cev muaj zog brushless, koj poob lub commutator thiab txhuam thiab tau txais ib lub tshuab hluav taws xob. Cov hlau nplaum ruaj khov tam sim no ua raws li lub rotor thiab tig sab hauv, thaum lub stator yog tam sim no tsim los ntawm cov khoom siv hluav taws xob sab nraud. Tus maub los muab lub zog rau txhua lub kauj raws li tus nqi xav tau kom nyiam cov hlau nplaum mus tas li.
Ntxiv nrog rau kev txav cov nqi hluav taws xob, tus maub los kuj tseem tuaj yeem muab cov nqi zoo sib xws los tiv thaiv cov hlau nplaum ruaj khov. Txij li cov nqi ntawm tib yam yog qhov sib txawv rau ib leeg, qhov no thawb cov hlau nplaum mus tas li. Tam sim no lub rotor txav vim yog rub thiab thawb quab yuam.
Nyob rau hauv cov ntaub ntawv no, cov hlau nplaum mus tas li txav, yog li tam sim no lawv yog kuv tus khub khiav thiab kuv. Peb tsis hloov lub tswv yim ntawm qhov peb xav tau. Hloov chaw, peb paub tias kuv xav tau Boston Butter Donuts, thiab kuv tus khub xav tau smoothies.
Cov tswj hluav taws xob tso cai rau peb cov kev nyiam noj tshais kom txav mus rau pem hauv ntej ntawm peb, thiab peb tau nrhiav tib yam txhua lub sijhawm. Tus maub los kuj tso tej yam uas peb tsis xav tau tom qab los muab thawb.
Brushed DC motors yog qhov yooj yim thiab pheej yig los tsim cov khoom (txawm tias tooj liab tsis tau pheej yig dua). Txij li thaum lub cev muaj zog brushless xav tau lub tshuab hluav taws xob sib txuas lus, koj tab tom pib tsim lub khoos phis tawj hauv lub cuab yeej tsis muaj zog. Qhov no yog vim li cas rau thawb tus nqi ntawm brushless motors.
Vim yog vim li cas tsim, brushless motors muaj ntau yam zoo dua brushed motors. Feem ntau ntawm lawv muaj feem xyuam nrog kev poob ntawm cov txhuam hniav thiab cov commutators. Txij li cov txhuam hniav yuav tsum nyob rau hauv kev sib cuag nrog lub commutator kom hloov cov nqi, nws kuj ua rau kev sib txhuam. Kev sib txhuam txo qhov ua tiav tau nrawm thiab tib lub sijhawm ua kom sov. Nws zoo li caij tsheb kauj vab nrog lub teeb nres. Yog tias koj ob txhais ceg siv tib lub zog, koj qhov nrawm yuav qeeb. Hloov pauv, yog tias koj xav kom ceev ceev, koj yuav tsum tau txais lub zog ntau dua los ntawm koj ob txhais ceg. Koj tseem yuav ua kom sov cov rims vim kev sib txhuam kub. Qhov no txhais tau hais tias, piv nrog brushed motors, brushless motors khiav ntawm qhov kub thiab txias. Qhov no ua rau lawv ua tau zoo dua, yog li lawv hloov hluav taws xob ntau dua rau hauv hluav taws xob hluav taws xob.
Cov pa roj carbon txhuam kuj tseem yuav hnav thaum lub sijhawm. Qhov no yog qhov ua rau sparks hauv qee cov cuab yeej. Txhawm rau kom lub cuab yeej ua haujlwm, cov txhuam hniav yuav tsum tau hloov ib ntus. Brushless motors tsis tas yuav tsum muaj kev saib xyuas zoo li no.
Txawm hais tias brushless motors xav tau hluav taws xob controllers, rotor / stator ua ke yog ntau compact. Qhov no ua rau muaj cib fim rau qhov hnyav dua thiab qhov loj me me. Qhov no yog vim li cas peb pom ntau yam cuab yeej xws li Makita XDT16 cuam tshuam tus tsav tsheb nrog ultra-compact tsim thiab lub zog muaj zog.
Zoo li muaj kev to taub yuam kev txog brushless motors thiab torque. Txhuam los yog brushless lub cev muaj zog tsim nws tus kheej tsis tshua qhia qhov loj ntawm torque. Piv txwv li, qhov tseeb torque ntawm thawj Milwaukee M18 roj rauj xyaum yog me dua tus qauv txhuam dhau los.
Txawm li cas los xij, thaum kawg cov neeg tsim khoom tau pom qee yam tseem ceeb heev. Cov khoom siv hluav taws xob siv hauv brushless motors tuaj yeem muab ntau lub zog rau cov motors thaum xav tau.
Txij li thaum brushless motors tam sim no siv cov kev tswj hluav taws xob siab heev, lawv tuaj yeem nkag siab thaum lawv pib decelerate nyob rau hauv load. Ntev npaum li lub roj teeb thiab lub cev muaj zog nyob hauv qhov ntsuas kub ntawm qhov ntsuas, lub tshuab hluav taws xob tsis siv lub tshuab hluav taws xob tuaj yeem thov thiab tau txais tam sim no ntau dua los ntawm cov roj teeb pob. Qhov no tso cai rau cov cuab yeej xws li brushless xyaum thiab saws kom ceev ceev dua nyob rau hauv load. Qhov no ua rau lawv nrawm dua. Nws feem ntau yog nrawm dua. Qee qhov piv txwv ntawm qhov no suav nrog Milwaukee RedLink Plus, Makita LXT Advantage thiab DeWalt Ua thiab Tiv Thaiv.
Cov thev naus laus zis no sib txuas ua ke nrog cov cuab yeej lub cev muaj zog, roj teeb, thiab cov khoom siv hluav taws xob rau hauv ib qho kev sib koom ua ke kom ua tiav qhov kev ua tau zoo thiab lub sijhawm ua haujlwm.
Commutation-hloov lub polarity ntawm tus nqi-pib lub brushless lub cev muaj zog thiab ua kom nws tig. Tom ntej no, koj yuav tsum tswj ceev thiab torque. Qhov ceev tuaj yeem tswj tau los ntawm kev hloov qhov voltage ntawm BLDC lub cev muaj zog stator. Modulating qhov voltage ntawm ntau zaus tso cai rau koj los tswj lub cev muaj zog ceev kom ntau dua.
Txhawm rau tswj lub torque, thaum lub torque load ntawm lub cev muaj zog nce siab tshaj ib theem, koj tuaj yeem txo cov stator voltage. Tau kawg, qhov no qhia txog cov cai tseem ceeb: kev saib xyuas lub cev muaj zog thiab sensors.
Hall-effect sensors muab txoj hauv kev pheej yig los txheeb xyuas txoj haujlwm ntawm rotor. Lawv kuj tuaj yeem kuaj xyuas qhov nrawm ntawm lub sijhawm thiab zaus ntawm lub sijhawm hloov pauv hloov pauv.
Editor's note: Mus saib peb Dab tsi yog ib tsab xov xwm sensorless brushless lub cev muaj zog kom paub seb BLDC lub cev muaj zog thev naus laus zis hloov pauv cov cuab yeej hluav taws xob li cas.
Kev sib xyaw ua ke ntawm cov txiaj ntsig no muaj lwm qhov txiaj ntsig-lub neej ntev dua. Txawm hais tias qhov kev lees paub rau txhuam thiab txhuam tsis siv lub cev muaj zog (thiab cov cuab yeej) hauv cov khoom lag luam feem ntau yog tib yam, koj tuaj yeem cia siab tias yuav muaj lub neej ntev dua rau cov qauv tsis txhuam. Qhov no feem ntau tuaj yeem yog ob peb xyoos dhau lub sijhawm lav.
Nco ntsoov thaum kuv hais tias cov tswj hluav taws xob yog qhov tseem ceeb hauv lub computer hauv koj cov cuab yeej? Brushless motors kuj yog lub ntsiab lus tseem ceeb rau cov cuab yeej ntse los cuam tshuam rau kev lag luam. Yog tias tsis muaj kev cia siab ntawm brushless motors ntawm kev sib txuas lus hauv hluav taws xob, Milwaukee's one-button technology yuav tsis ua haujlwm.
Nyob rau lub sijhawm, Kenny tshawb nrhiav qhov kev txwv ntawm ntau yam cuab yeej thiab sib piv qhov sib txawv. Tom qab tawm haujlwm, nws txoj kev ntseeg thiab kev hlub rau nws tsev neeg yog nws qhov tseem ceeb tshaj plaws. Feem ntau koj yuav nyob hauv chav ua noj, caij tsheb kauj vab (nws yog triathlon) lossis coj tib neeg tawm mus nuv ntses ib hnub hauv Tampa Bay.
Tseem muaj qhov tsis txaus ntawm cov neeg ua haujlwm txawj ntse hauv Tebchaws Meskas tag nrho. Qee tus hu nws "kev txawj ntse sib txawv." Txawm hais tias tau txais 4-xyoo tsev kawm ntawv qib siab yuav zoo li "tag nrho cov npau taws," qhov kev ntsuam xyuas zaum kawg los ntawm Bureau of Labor Statistics qhia tias cov kev lag luam txawj xws li vuam thiab hluav taws xob tau raug ntaus nqi dua [...]
Thaum ntxov li 2010, peb tau sau txog cov roj teeb zoo dua siv graphene nanotechnology. Nov yog kev sib koom tes ntawm Lub Tsev Haujlwm Saib Xyuas Zog thiab Vorbeck Cov Khoom Siv. Cov kws tshawb fawb siv graphene los pab kom cov roj teeb lithium-ion tau them hauv feeb tsis yog teev. Tau ib pliag. Txawm hais tias graphene tseem tsis tau muab coj los siv, peb tau rov qab nrog qee cov roj teeb lithium-ion tshiab […]
Dai ib daim duab hnyav rau ntawm phab ntsa qhuav tsis nyuaj heev. Txawm li cas los xij, koj xav kom koj ua tau zoo. Txwv tsis pub, koj yuav yuav ib lub thav duab tshiab! Tsuas yog ntsia hlau ntsia hlau rau phab ntsa tsis txiav nws. Koj yuav tsum paub yuav ua li cas kom tsis txhob cia siab rau [...]
Nws tsis yog qhov tsis yooj yim uas xav tso 120V hluav taws xob xaim hauv av. Tej zaum koj yuav xav siv zog rau koj lub tsev, chaw ua haujlwm lossis chaw nres tsheb. Lwm qhov kev siv yog lub hwj chim teeb ncej lossis hluav taws xob qhov rooj motors. Nyob rau hauv ob qho tib si, koj yuav tsum nkag siab qee qhov kev xaim hauv av kom tau raws li [...]
Ua tsaug rau qhov kev piav qhia. Qhov no yog ib yam dab tsi uas kuv tau xav tsis thoob los ntev, pom tias feem ntau cov neeg tau txais kev pom zoo ntawm brushless (tsawg kawg yog siv los ua kev sib cav rau cov cuab yeej siv hluav taws xob kim thiab drones).
Kuv xav paub: Puas yog tus maub los puas paub qhov nrawm? Tsis yog nws yuav tsum tau ua kom synchronize? Nws puas muaj cov ntsiab lus Hall uas nkag siab (rotate) hlau nplaum?
Tsis yog txhua lub tshuab brushless zoo dua li txhua lub tshuab txhuam hniav. Kuv xav pom yuav ua li cas lub roj teeb lub neej ntawm Gen 5X piv rau nws cov thawj ntawm X4 nyob rau hauv nruab nrab mus rau hnyav loads. Txawm li cas los xij, txhuam hniav yuav luag tsis muaj qhov txwv lub neej. Thawj lub cev muaj zog ceev ntawm cov cuab yeej cordless yog kwv yees li 20,000 txog 25,000. Thiab los ntawm lub lubricated planetary iav teeb, qhov txo yog hais txog 12: 1 nyob rau hauv lub siab iav thiab txog 48: 1 nyob rau hauv lub qis iav. Lub tshuab ua haujlwm thiab lub cev muaj zog rotor bearings uas txhawb nqa 25,000RPM rotor hauv cov huab cua plua plav feem ntau yog cov ntsiab lus tsis muaj zog.
Raws li Amazon tus khub, peb yuav tau txais cov nyiaj tau los thaum koj nyem rau ntawm Amazon txuas. Ua tsaug koj pab peb ua qhov peb nyiam ua.
Pro Tool Reviews yog ib qho kev tshaj tawm zoo hauv online uas tau muab cov cuab yeej tshuaj xyuas thiab xov xwm kev lag luam txij li xyoo 2008. Nyob rau hauv lub ntiaj teb niaj hnub no ntawm Internet xov xwm thiab cov ntsiab lus hauv online, peb pom tias ntau thiab ntau tus kws tshaj lij tshawb fawb online feem ntau ntawm cov cuab yeej hluav taws xob loj uas lawv yuav. Qhov no ua rau peb txaus siab.
Muaj ib qho tseem ceeb uas yuav tsum nco ntsoov txog Pro Tool Reviews: Peb txhua tus hais txog cov neeg siv cuab yeej tshaj lij thiab cov neeg lag luam!
Lub vev xaib no siv cov ncuav qab zib kom peb tuaj yeem muab koj cov kev paub zoo tshaj plaws rau cov neeg siv. Cov ntaub ntawv ncuav qab zib yog khaws cia rau hauv koj lub browser thiab ua qee yam haujlwm, xws li lees paub koj thaum koj rov qab los rau peb lub vev xaib thiab pab peb pab neeg nkag siab txog qhov chaw ntawm lub vev xaib uas koj pom zoo tshaj plaws thiab muaj txiaj ntsig. Thov koj xav nyeem peb txoj cai ntiag tug kom tiav.
Yuav tsum muaj cov ncuav qab zib nruj me ntsis yuav tsum tau qhib kom peb thiaj li txuag tau koj cov kev nyiam rau cov ncuav qab zib.
Yog tias koj lov tes taw cov ncuav qab zib no, peb yuav tsis tuaj yeem khaws koj cov kev nyiam. Qhov no txhais tau hais tias koj yuav tsum tau qhib lossis kaw cov ncuav qab zib dua txhua zaus koj mus ntsib lub vev xaib no.
Gleam.io-Qhov no tso cai rau peb muab khoom plig uas sau cov ntaub ntawv tsis qhia npe rau cov neeg siv, xws li cov neeg tuaj xyuas lub vev xaib. Tshwj tsis yog tias cov ntaub ntawv ntiag tug tuaj yeem xa tuaj rau lub hom phiaj ntawm kev nkag mus rau khoom plig, yuav tsis sau cov ntaub ntawv tus kheej.
Post lub sij hawm: Aug-31-2021