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Iindlela eziqhelekileyo zolawulo lweemoto ze BLDC brushless DC motors

Iinjini ze-Brushless ze-DC zi-self-commutating (ukuguqulwa kwe-self-direction), ngoko zinzima kakhulu ukulawula.
I-BLDC yokulawula i-motor idinga ukuqonda indawo ye-rotor kunye nendlela yokulungiswa kunye nokulawula i-motor.Ukulawula isivinini se-loop evaliweyo, kukho iimfuno ezimbini ezongezelelweyo ukuba isantya se-rotor / okanye i-motor current kunye ne-PWM yesiginali ilinganiswe ukulawula isantya semoto kunye amandla.
Small brushless DC motorii-motor zingasebenzisa i-eddge - okanye i-center-array ye-PWM izibonakaliso ngokweemfuno zesicelo.Izicelo ezininzi zifuna kuphela imisebenzi eguquguqukayo yesantya kwaye iya kusebenzisa i-edge emithandathu ezimeleyo ye-signal ye-PWM.Oku kunika isisombululo esiphezulu kunokwenzeka.Ukuba isicelo sidinga ukugcinwa kweseva, ukunyanzeliswa kwamandla, okanye ukuguqulwa kwamandla, ukusetyenziswa kwesignali ye-PWM ehambelanayo yeziko kuyacetyiswa.
Ukuze uqonde isikhundla se-rotor, i-BLDC ithatha i-sensor ye-Hall effect ukubonelela nge-induction ye-absolute position.Oku kukhokelela ekusebenziseni imigca engaphezulu kunye neendleko eziphezulu.Ulawulo lwe-BLDC lwe-Sensorless luphelisa imfuno ye-sensor yeHolo kwaye endaweni yoko isebenzisa i-electromotive force yangasemva (EMF). ) ye-motor ukuqikelela indawo ye-rotor.Ukulawulwa kwe-Sensorless kubalulekile kwiinkqubo zesantya eziguquguqukayo eziphantsi kwexabiso eliphantsi njengabalandeli kunye neepompo.Ukusetyenziswa kwe-BLDC motor, ifriji kunye ne-air conditioning compressor nazo zifuna ulawulo olungenangqondo.
Ukufakwa kunye nokuzaliswa kwakhona kwexesha elingalayishwanga
Uninzi lweenjini ze-BLDC azifuni i-PWM encedisayo, ixesha lokufakela ixesha, okanye akukho mthwalo ngexesha lembuyekezo.Izicelo ze-BLDC kuphela ezinokufuna ezi mpawu zisebenza ngokuphezulu iinjini ze-servo ze-BLDC, ii-motor ze-sinusoidal ezichulumancisayo ze-BLDC, i-brushless AC, okanye i-PC synchronous. iinjini.
Lawula algorithm
Iindlela ezininzi zokulawula ii-algorithms ezahlukeneyo zisetyenziselwa ukubonelela ngolawulo lwee-motor ze-BLDC.Ngokuqhelekileyo, ii-transistors zamandla zisetyenziswa njengabalawuli bomgca ukulawula i-motor voltage.Le ndlela ayisebenzi xa uqhuba ii-motor zamandla aphezulu.Iinjini zamandla aphezulu kufuneka zilawulwe yi-PWM kwaye zifuna i-microcontroller. bonelela ngokuqalisa nokulawula imisebenzi.