I-Brushless dc motor control kanye nendlela yokulawula isivinini

I-Dc brushless motorisakhiwo sinengqondo, ijubane layo ngokuyisisekelo lizinzile kakhudlwana, ngakho-ke ngokuvamile, akuvamile ukuba kube nokulawulwa kwejubane elikhulu.Ngoba i-motor inezinhlobonhlobo zezicelo futhi ingasetshenziswa yimishini eminingi, kuyadingeka ukulungisa isivinini sayo ngokuvumelana nezikhathi ezahlukene. Kepha i-brushless dc motor control kanye nendlela yokulawula isivinini idinga ukuthi wonke umuntu afunde, ukuze asebenzise ngokushesha:

1. Ngokulawula indlela ikhoyili enikezwa ngayo amandla, ikhoyili ephikisanayo ihlukaniswa ibe yiqembu futhi yamanje inikezwa amandla okukhiqiza amandla kazibuthe ohlangothini olufanayo.

2. Inombolo yezigxobo ze-brushless dc motor zintathu, ukuze ipheya ngayinye “yezigxobo zikazibuthe” iqhutshwe ngendlela ethile ukuze kuzuzwe umphumela wokuzungezisa kazibuthe.Ngaphansi kwesenzo sikazibuthe, i-rotor kazibuthe ongunaphakade. phakathi njalo unomkhuba wokugcina insimu kazibuthe isendleleni efanayo futhi izozungeza nenkundla kazibuthe ezungezayo.

I-H1H2H3 izinzwa zeHholo ezintathu ezibekwe esikhaleni somoya sekhoyili evusa amadlingozi, esetshenziswa njengengxenye yokubona indawo kazibuthe. I-voltage ingashintshwa ngokuya ngesiqondiso sensimu kazibuthe, futhi okukhiphayo kuyisignali yedijithali.

3. Ikhoyili ye-stator inikezwa amandla ngokuvumelana nokulandelana okulandelayo, futhi insimu kazibuthe ye-rotor kanye ne-stator magnetic field kufanele ibe ne-Angle.Asikho isidingo sokwahlulela ukuthi i-brushless dc motor isanda kuqalwa, udinga nje ukwenza umyalo olandelayo ngokusho. esimweni sokusebenza esibuyiselwe yinzwa yeHholo.

Umyalo wayo ukuthumela amapheya amathathu ekhoyili evuliwe futhi ayivale, la maswishi atholwa nge-transistor.

Ukujikeleza kwe-BLDC yezigaba ezintathu kungenziwa ngokunika amandla noma ukusika amapheya amathathu ama-transistors ngokulandelana okuthile.

4. Njengoba i-rotor ijikeleza, amandla akhangwe ekhoyili ngayinye asuka phezulu aye kuziro aphinde abuyele emuva.Ngenxa yokuthi lapho ikhoyili inikwa amandla ngakolunye uhlangothi, amandla e-electromotive ahlehlayo azovimbela i-voltage ehlehlayo, ngakho ingxenye yegagasi ye-trapezoidal izoba namandla. kuvela.I-voltage eqondile nengalungile yengxenye ye-trapezoidal ye-zero iphambene, ngakho-ke isimo sokusebenza se-motor stator singanqunywa ngokuthola i-voltage enhle neyibi ngemva kwalokho. i-voltage comparator.

Njengoba iphuzu le-zero liphakathi nendawo ye-trapezoid, ukujikeleza kwe-BLDC kungalawulwa ngemva kokuba isignali yokulawula yokulandelana kwesikhathi esihambisanayo iphuma ngemva kokulibaziseka kwe-30 °.Le mode yokulawula ayidingi inzwa yeHholo, futhi izintambo ezintathu zingakwazi. shayela iI-BLDC.Uma i-waveform ilungile uma kuqhathaniswa, amajika kagesi wekhoyili amathathu angatholwa ngokuhlanganisa ngokuqondile i-voltage.Ngakho-ke i-brushless dc motor ingalawulwa.

5. Thola isiqondiso sokuqala, nikeza amandla ikhoyili engezansi kuleso siqondiso kuqala, yenza i-rotor iphendukele endaweni yokuqala ngesikhathi esifushane, futhi unikeze amandla injini ngokuvumelana nokulandelana okulandelayo kwezenzo.

Ukuze kuthuthukiswe ukusetshenziswa kahle kwe-brushless dc motor, sidinga ukufunda ngokuya ngendawo yokusebenzisa ehlukile, ukulawula okuhlukile kanye nokulawulwa kwejubane, ukuthuthukisa ukusebenza kahle kwemoto, indlela yokulawula kanye nesivinini ingasetshenziswa ukulungisa isivinini.