Kungani amathuluzi kagesi (njengama-drill ngesandla, ama-engeli grinder, njll.) ngokuvamile esebenzisa amamotho abhulashiwe esikhundleniama-brushless motors? Ukuze uqonde, lokhu akucaci kahle emshweni owodwa noma emibili.

Ama-motor e-DC ahlukaniswe ama-motor brushed nama-brushless motors. “Ibhulashi” elishiwo lapha libhekisela kumabhulashi ekhabhoni.Ibukeka kanjani ibhulashi lekhabhoni?

Kungani ama-DC motors edinga amabhulashi ekhabhoni?Uyini umehluko phakathi kwamabhulashi ekhabhoni nangaphandle kwawo?Ake sibheke phansi!

Isimiso se-brushed DC motor

Njengoba kukhonjisiwe kuMfanekiso 1, lona umdwebo wesakhiwo se-DC brush motor.Ozibuthe ababili abangaguquki okuphambene, ikhoyili ibekwe phakathi, iziphetho zombili zekhoyili zixhunywe emasongweni amabili ethusi ayindilinga, zombili iziphetho zamasongo ethusi zixhumene nebhulashi lekhabhoni elilungisiwe, bese kuthi i-DC ixhumeke. kuzo zombili iziphetho zebhulashi lekhabhoni. ukunikezwa kwamandla kagesi.

umfanekiso 1

Ngemva kokuxhuma kugesi, owamanje uboniswa umcibisholo otholakala kuMfanekiso 1.Ngokomthetho osesandleni sokunxele, ikhoyili ephuzi ingaphansi kwamandla kazibuthe aqonde phezulu; ikhoyili eluhlaza okwesibhakabhaka ingaphansi kwamandla kazibuthe aqonde phansi abheke phansi.Irotha yenjini iqala ukuzungeza ngokwewashi, futhi ngemva kokuzungezisa amadigri angama-90, njengoba kubonisiwe kuMfanekiso 2:

umfanekiso 2

Ngalesi sikhathi, ibhulashi lekhabhoni lingaphakathi kwegebe phakathi kwamasongo amabili ethusi, futhi yonke iluphu yekhoyili ayinayo okwamanje.Kodwa ngaphansi kwesenzo se-inertia, i-rotor iyaqhubeka nokujikeleza.

isithombe 3

Lapho i-rotor iphendukela endaweni engenhla ngaphansi kwesenzo se-inertia, i-coil current iboniswa kuMfanekiso 3. Ngokomthetho ongakwesokunxele, ikhoyili eluhlaza okwesibhakabhaka ingaphansi kwamandla kagesi abheke phezulu; ikhoyili ephuzi ingaphansi kwamandla kazibuthe awehla aqonde phansi. I-motor rotor iyaqhubeka nokuzungeza njengokuya kwewashi, ngemva kokuzungezisa amadigri angama-90, njengoba kukhonjisiwe kuMfanekiso 4:

Umfanekiso 4

Ngalesi sikhathi, ibhulashi lekhabhoni lingaphakathi kwegebe phakathi kwamasongo amabili ethusi, futhi akukho okwamanje kuyo yonke iluphu yekhoyili.Kodwa ngaphansi kwesenzo se-inertia, i-rotor iyaqhubeka nokujikeleza.Bese uphinda izinyathelo ezingenhla, futhi umjikelezo uyaqhubeka.

I-DC brushless motor

Njengoba kukhonjisiwe kuMfanekiso 5, lona umdwebo wesakhiwo se-abrushless DC motor. Iqukethe i-stator ne-rotor, lapho i-rotor inezigxobo zamagnetic; kunamasethi amaningi amakhoyili alimala ku-stator, futhi kukhona amasethi ayi-6 wamakhoyili esithombeni.

Umfanekiso 5

Uma sidlula okwamanje kumakhoyili e-stator 2 no-5, amakhoyili 2 no-5 azokhiqiza insimu kazibuthe. I-stator ilingana nozibuthe webha, lapho u-2 eyi-S (South) pole futhi u-5 eyi-N (North) pole. Njengoba izigxobo kazibuthe zobulili obufanayo zikhangana, isigxobo se-N se-rotor sizozungeza endaweni yekhoyili 2, futhi isigxobo sika-S se-rotor sizozungeza endaweni yekhoyili yesi-5, njengoba kuboniswe kuMfanekiso 6.

Isithombe 6

Khona-ke sisusa amakhoyili we-stator 2 no-5, bese sidlulisela okwamanje kumakhoyili e-stator 3 no-6. Ngalesi sikhathi, amakhoyili 3 no-6 azokhiqiza insimu kazibuthe, futhi i-stator ilingana ne-bar magnet. , lapho u-3 eyisigxobo sika-S (eningizimu) futhi u-6 eyisigxobo sika-N (enyakatho). Njengoba izigxobo kazibuthe zobulili obufanayo zikhangana, i-N pole ye-rotor izojikeleza endaweni yekhoyili 3, futhi i-S pole ye-rotor izozungeza endaweni yekhoyili 6, njengoba kuboniswe kuMfanekiso 7.

Umfanekiso 7

Ngendlela efanayo, i-current of stator coil 3 no-6 isusiwe, futhi okwamanje idluliselwa ku-stator coil 4 no-1. Ngalesi sikhathi, amakhoyili 4 no-1 azokhiqiza insimu yamagnetic, futhi i-stator ilingana. kumazibuthe webha, lapho u-4 eyi-S (eningizimu) pole futhi u-1 eyi-N (enyakatho). Njengoba izigxobo kazibuthe zobulili obufanayo zidonsa zodwa, isigxobo esingu-N se-rotor sizozungeza siye endaweni yekhoyili 4, futhi isigxobo sika-S serotor sizozungeza siye endaweni yekhoyili 1.

Kuze kube manje, injini isizungezise ingxenye yesiyingi…. Umbuthano wengxenye yesibili uyafana nomgomo wangaphambilini, ngakho-ke ngeke ngiwuphinde lapha.Singamane siqonde i-brushless DC motor njengokudoba isanqante phambi kwembongolo, ukuze imbongolo ihlale ihambela isanqante.

Ngakho-ke singadlulisela kanjani amandla anembile kumakhoyili ahlukahlukene ngezikhathi ezihlukene? Lokhu kudinga umjikelezo wamanje wokuthutha…akuningiliziwe lapha.

Ukuqhathanisa izinzuzo kanye nebubi

I-DC brush motor: isiqalo esisheshayo, ukubhuleka okufika ngesikhathi, ukulawulwa kwejubane okuzinzile, ukulawula okulula, isakhiwo esilula kanye nentengo ephansi.Iphuzu liwukuthi ishibhile!intengo eshibhile!intengo eshibhile!Ngaphezu kwalokho, ine-torque enkulu yokuqala, i-torque enkulu (amandla okujikeleza) ngesivinini esiphansi, futhi ingathwala umthwalo osindayo.

Kodwa-ke, ngenxa yokungqubuzana phakathi kwebhulashi le-carbon kanye nengxenye yabahambi, i-DC brush motor ijwayele ukuvela izinhlansi, ukushisa, umsindo, ukuphazamiseka kukamagnetic endaweni yangaphandle, ukusebenza kahle okuphansi nokuphila okufushane.Ngenxa yokuthi amabhulashi ekhabhoni ayizinto ezisetshenziswayo, ajwayele ukwehluleka futhi adinga ukushintshwa ngemuva kwesikhathi esithile.

Brushless DC motor: Ngobabrushless DC motoriqeda isidingo samabhulashi ekhabhoni, inomsindo ophansi, ayinakunakekelwa, izinga lokuhluleka eliphansi, impilo ende yesevisi, isikhathi sokusebenza esizinzile namandla kagesi, kanye nokuphazanyiswa okuncane kwemishini yomsakazo. Kodwa kuyabiza! Kuyabiza! Kuyabiza!

Izici Zethuluzi Lamandla

Amathuluzi kagesi angamathuluzi asetshenziswa kakhulu empilweni. Kunezinhlobo eziningi zemikhiqizo nokuncintisana okuqinile. Wonke umuntu uzwela kakhulu amanani.Futhi amathuluzi kagesi adinga ukuthwala umthwalo osindayo futhi kufanele abe ne-torque enkulu yokuqala, efana nokubhoboza ngesandla kanye nokubhoboza okunomthelela.Uma kungenjalo, lapho ubhoboza, injini ingahluleka kalula ukugijima ngoba i-drill bit ibambekile.

Cabanga nje, i-brushed DC motor inenani eliphansi, i-torque enkulu yokuqala, futhi ingathwala imithwalo esindayo; nakuba i-brushless motor inezinga eliphansi lokuhluleka kanye nempilo ende, iyabiza, futhi i-torque yokuqala iphansi kakhulu kunemoto ebhulashiwe.Uma ubunganikezwa ukukhetha, ubungakhetha kanjani, ngicabanga ukuthi impendulo iyazicacela.

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Isikhathi sokuthumela: Oct-07-2022