Njengomthombo wamandla wezixhobo zombane okanye oomatshini abahlukeneyo, umsebenzi ophambili wemoto kukubangela itorque yokuqhuba.

Nangona isinciphisi seplanethi sisetyenziswa ikakhulu ngokudityaniswa neemotor ze-servo kunye ne-stepper motors, ulwazi lobuchwephesha lweemotor lusathandwa kakhulu.Ngoko ke, ndandingenamonde ukubona esi “sishwankathelo sesona sithuthuthu sinamandla embalini”.Buya ukuze wabelane naye wonke umntu.

I-Brushless Direct Current Motor (BLDCM) isusa ukusilela okukhoyo kweenjini ze-DC ezibrashwayo kwaye ithathela indawo iirotor ezingoomatshini ngesixhobo sombane esinezixhobo zombane.Ke ngoko, iimotor zangoku ezithe ngqo ezingenabrashi zineempawu ezibalaseleyo zesantya esiguqukayo kunye nezinye iimpawu zeenjini zeDC.Ikwanayo neengenelo zesakhiwo esilula sonxibelelwano lwe-AC motor, akukho mlilo wokutshintsha, ukusebenza okuthembekileyo kunye nokugcinwa lula.
Imigaqo esisiseko kunye ne-algorithms yokuphucula.

Imithetho ye-BLDC yokulawula i-motor ilawula indawo kunye nenkqubo ye-motor rotor ephuhliswa yi-motor kwi-rectifier.Ukulawulwa kwesantya sokulawulwa kwe-loop evaliweyo, kukho imimiselo emibini eyongezelelweyo, oko kukuthi, umlinganiselo ochanekileyo wesantya se-motor rotor / okanye i-motor current kunye ne-signal yayo ye-PWM yokulawula amandla okuphuma kwesantya semoto.

I-motor ye-BLDC inokukhetha ukulandelelana kwecala okanye iziko lokulawula ukulandelelanisa umqondiso we-PWM ngokwemigaqo yesicelo.Uninzi lwezicelo lutshintsha kuphela ukusebenza kokwenyani kwireyithi echaziweyo, kwaye imiqondiso emi-6 elandelelanayo yokulandelelanisa i-PWM iya kukhethwa.Oku kubonisa esona sisombululo siphezulu sesikrini.Ukuba usebenzisa iseva yenethiwekhi ekhankanyiweyo ukulungiselela indawo echanekileyo, inkqubo yokuqhokra edla amandla okanye ukubuyisela umva amandla okuqhuba, kuyacetyiswa ngamandla ukuba usebenzise iziko lolawulo eligcwalisiweyo ukulandelelanisa umqondiso wePWM.

Ukuze uphucule indawo ye-rotor ye-motor induction yamagnetic, i-BLDC motor isebenzisa i-Hall-effect sensor ukuze ibonise ukufakwa ngokupheleleyo kwi-magnetic induction.Oku kubangela izicelo ezininzi kunye neendleko eziphezulu.Ukusebenza kwe-Inductorless BLDC kuphelisa imfuno yezinto zeHolo, kwaye ikhetha kuphela i-self-induced force electromotive (i-electromotive force) ye-motor ukuqikelela nokuhlalutya inxalenye ye-rotor ye-motor.Ukusebenza kwe-Sensorless kubaluleke kakhulu kwizicelo zokulawula isantya esiphantsi kweendleko ezifana neefeni zokupholisa kunye neepompo.Xa usebenzisa ii-motor ze-BLDC, iifriji kunye ne-compressor kufuneka ziqhutywe ngaphandle kwee-inductors.Ukufakwa kunye nokuzaliswa kwexesha elipheleleyo lomthwalo
Uninzi lweenjini ze-BLDC azidingi i-PWM encedisayo, ukufakwa kwexesha lokulayisha ngokupheleleyo okanye imbuyekezo yexesha elipheleleyo.Kusenokwenzeka ukuba usetyenziso lwe-BLDC olunolu phawu luphezulu kuphela iimotor ze-BLDC ze-servo, i-sine-wave ekhuthazwayo yeemotor ze-BLDC, iimotor ezibrashwayo ze-AC, okanye iimotor zePC ezihambelanayo.

Iinkqubo ezininzi zolawulo ezahlukeneyo zisetyenziselwa ukubonisa ukuqhathwa kweenjini ze-BLDC.Ngokuqhelekileyo, i-transistor yamandla ephumayo isetyenziswa njengombane olawulwayo olawulwayo ukuze ulawule amandla ombane osebenzayo wemoto.Olu hlobo lwendlela alulula ukuyisebenzisa xa uqhuba i-motor enamandla kakhulu.Iinjini zamandla aphezulu kufuneka ziqhutywe yi-PWM, kwaye i-microprocessor kufuneka icaciswe ukubonisa ukuqala kunye nemisebenzi yokulawula.

Inkqubo yolawulo kufuneka ibonise le misebenzi mithathu ilandelayo:

Umbane osebenzayo wePWM osetyenziswa ukulawula isantya semoto;

Inkqubo esetyenziselwa ukuguqula i-motor kwi-rectifier;

Sebenzisa i-self-induced electromotive force okanye iHolo element ukuqikelela nokuhlalutya indlela ye-motor rotor.

Uhlengahlengiso lobubanzi be-pulse lusetyenziselwa kuphela ukusebenzisa i-voltage yokusebenza eguquguqukayo kwi-motor winding.Umbane osebenzayo ofanelekileyo unxulunyaniswa kakuhle nomjikelo womsebenzi wePWM.Xa uhlengahlengiso olufanelekileyo lufunyenwe, iimpawu zesantya setorque ze-BLDC ziyafana nezi zilandelayo motors zeDC.Umbane oguquguqukayo osebenzayo unokusetyenziselwa ukulawula isantya kunye netorque eguquguqukayo yemoto.