IBLOG

Impendulo yesikhundla se-brushless DC motor

Selokhu kwazalwa brushless DC motor, Inzwa yomphumela wehholo ibe amandla amakhulu okuqaphela impendulo yokuguqulwa.Njengoba ukulawula kwezigaba ezintathu kudinga izinzwa ezintathu kuphela futhi kunezindleko zeyunithi ephansi, ngokuvamile ziyisinqumo esinomnotho kakhulu sokuhlehla kusukela kumbono wezindleko ze-BOM kuphela.Izinzwa zomphumela wehholo ezishumekwe ku-stator zithola indawo yerotha ukuze ama-transistors ebhulohweni lezigaba ezintathu akwazi ukushintshwa ukuze ashayele injini.Okuphumayo kwenzwa yomphumela weHholo okuthathu ngokuvamile kubhalwe ukuthi amashaneli angu-U, V, kanye no-W. Nakuba i-Hall izinzwa zomphumela zingaxazulula ngempumelelo inkinga ye-BLDC motor commutation, zihlangabezana kuphela nengxenye yezidingo zohlelo lwe-BLDC.

Nakuba inzwa yomphumela weHholo inika amandla isilawuli ukuthi sishayele injini ye-BLDC, ukulawulwa kwayo ngeshwa kunqunyelwe isivinini nokuqondisa.Enjini yezigaba ezintathu, inzwa yomphumela weHholo inganikeza kuphela indawo eyi-angular ngaphakathi komjikelezo kagesi ngamunye.Njengoba inani lamapheya wezigxobo likhula, kanjalo nenani lemijikelezo kagesi ngokuzungezisa komshini ngamunye, futhi njengoba ukusetshenziswa kwe-BLDCs kusakazeka kakhulu. , kanjalo nesidingo sokuzwa isikhundla esinembile.Ukuqinisekisa ukuthi isisombululo siqinile futhi siphelele, uhlelo lwe-BLDC kufanele lunikeze ulwazi lwesikhathi sangempela ukuze umlawuli angakwazi ukulandelela isivinini kanye nesiqondiso kuphela, kodwa futhi nebanga lokuhamba kanye nokuma kwe-angular.
Ukuze kuhlangatshezwane nesidingo solwazi lwendawo eqinile, isisombululo esivamile siwukwengeza isishumeki esijikelezayo esikhuphukayo enjini ye-BLDC. Ngokuvamile, izifaki khodi ezikhulayo zengezwa kusistimu efanayo yokulawula impendulo ye-loop ngaphezu kwenzwa yomphumela weHholo.Izinzwa zomphumela wehholo esetshenziselwa ukuguqulwa kwezimoto, kuyilapho izishumeki zisetshenziselwa ukulandelela okunembe kakhudlwana kwendawo, ukuzungezisa, isivinini kanye nendlela.Njengoba inzwa yomphumela weHholo inikeza kuphela ulwazi olusha lwendawo ekushintsheni kweHholo ngalinye, ukunemba kwayo kufinyelela ezifundeni eziyisithupha kuphela ngomjikelezo wamandla ngamunye.Ngoba ama-bipolar motors, kunezifunda eziyisithupha kuphela ngomjikelezo womshini ngamunye.Isidingo sakho kokubili sisobala uma siqhathaniswa nesifaki khodi esikhuphukayo esinikeza ukuxazulula ngezinkulungwane ze-PPR (ama-pulses per revolution), engaqoshwa ngokuphindwe kane inani lezinguquko zesimo.
Kodwa-ke, njengoba abakhiqizi bezimoto njengamanje kufanele bahlanganise zombili izinzwa zomphumela weHholo kanye nezifaki khodi ezikhuphukayo kumamotho abo, abakhiqizi abaningi bokufaka ikhodi sebeqala ukunikeza izifaki khodi ezikhuphukayo ezinemiphumela eshintshayo, esivame ukubhekisela kuyo njengezifaki khodi ezihambayo. Lezi zifaki khodi zenzelwe ngokukhethekile ungahlinzeki kuphela ngamashaneli e-orthogonal e-orthogonal A no-B (futhi kwezinye izimo inkomba ye-pulse channel Z) "kanye ngejika), kodwa futhi namasignali ajwayelekile okushintsha u-U, V, no-W adingwa iningi labashayeli bezimoto ze-BLDC. Lokhu kusindisa injini. klama isinyathelo esingadingekile sokufaka kokubili inzwa yomphumela weHholo kanye nesifaki khodi esikhulayo ngesikhathi esisodwa.
Nakuba izinzuzo zale ndlela zisobala, kukhona ukuhwebelana okubalulekile.Njengoba kushiwo ngenhla, indawo ye-rotor ne-stator kufanele ibe yinkosi I-BLDC brushless motor ukuze kushintshwe ngempumelelo.Lokhu kusho ukuthi kufanele kuqashelwe ukuze kuqinisekiswe ukuthi iziteshi ze-U/V/W zesishumeki esihambayo zihambisana kahle nesigaba senjini ye-BLDC.