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Isikhundla impendulo brushless DC motor

Ukususela ekuzalweni kwe brushless DC motor, Inzwa yempembelelo yeHolo ibe yinto ephambili yokuqonda impendulo yokuguqulwa.Ukusukela ukuba ulawulo lwesigaba sesithathu ludinga kuphela iisensori ezintathu kwaye zinexabiso eliphantsi leyunithi, zihlala zikhethwa kakhulu kunoqoqosho lokubuyisela umva kwindleko ye-BOM kuphela.Izinzwa zempembelelo zeholo ezifakwe kwi-stator zifumanisa indawo ye-rotor ukwenzela ukuba i-transistors kwibhulorho yesigaba sesithathu ingatshintshwa ukuze iqhube i-motor.Iziphumo ezintathu ze-Hall effect sensor zibhalwe ngokubanzi njenge-U, V, kunye ne-W.Nangona iHolo abenzi boluvo lwesiphumo banokusombulula ngempumelelo ingxaki ye-BLDC yokutshintshwa kweemoto, bahlangabezana kuphela nesiqingatha seemfuno zenkqubo yeBLDC.

Nangona i-sensor yempembelelo yeHolo yenza ukuba umlawuli aqhube imoto ye-BLDC, ulawulo lwayo ngelishwa lukhawulelwe kwisantya kunye nolwalathiso.Kwinqanaba lesithathu lemoto, i-Hall effect sensor inokubonelela kuphela indawo ye-angular ngaphakathi komjikelo ngamnye wombane.Njengoko inani leepali zepali landa, ngoko ke inani lemijikelezo yombane ngokujikeleza komatshini, kwaye njengoko ukusetyenziswa kwe-BLDCs kuya kusasazeka. , ngoko ke imfuno ye-position sensing echanekileyo.Ukuqinisekisa ukuba isisombululo sinamandla kwaye sigqityiwe, inkqubo ye-BLDC kufuneka ibonelele ngolwazi lwexesha langempela ukwenzela ukuba umlawuli angakwazi ukulandelela nje isantya kunye nolwalathiso, kodwa kunye nomgama wokuhamba kunye nokuma kwe-angular.
Ukuhlangabezana nesidingo solwazi olungqongqo lwesikhundla, isisombululo esiqhelekileyo kukongeza i-encoder ye-rotary eyongeziweyo kwi-motor ye-BLDC. Ngokuqhelekileyo, ii-encoders ezongeziweyo zongezwa kwinkqubo efanayo yolawulo lwe-loop yengxelo ngaphezu kwe-Hall effect sensor. esetyenziselwa ukuguqulwa kweemoto, ngelixa i-encoders isetyenziselwa ukulandelwa okuchanekileyo kwesikhundla, ukujikeleza, isantya kunye nesalathiso.Njengoko i-Hall effect sensor ibonelela kuphela ngolwazi olutsha lwendawo kwi-Hall state change, ukuchaneka kwayo kufikelela kuphela kwi-states ezintandathu kumjikelo wamandla ngamnye. iimotor bipolar, kukho amazwe amathandathu kuphela kumjikelo ngoomatshini.Imfuno yazo zombini icacile xa ithelekiswa ne-encoder eyongezelekayo ebonelela ngesisombululo kumawaka ePPR (i-pulses per revolution), enokuthi icaciswe ngokuphindwe kane inani lotshintsho lwelizwe.
Nangona kunjalo, kuba abavelisi beemoto okwangoku kufuneka badibanise zombini izinzwa zesiphumo seHolo kunye neekhowudi ezongezelelekileyo kwiinjini zabo, abaninzi abavelisi beekhowudi baqala ukubonelela ngeekhowudi ezongezelelekileyo ezineziphumo ezijikelezayo, esihlala sibhekisa kuzo ngokulula njengeekhowudi ezijikelezayo. ukubonelela kungekuphela nje ijelo lesiqhelo le-orthogonal A kunye ne-B (kwaye kwezinye iimeko i-"kanye ngokujika" isalathisi se-pulse channel Z), kodwa kunye nomgangatho we-U, V, kunye no-W weempawu zohambo ezifunwa ngabaqhubi beemoto ezininzi ze-BLDC. Oku konga injini uyila inyathelo elingeyomfuneko lokufakela zombini i-sensor yesiphumo seHolo kunye ne-encoder eyongezelelweyo ngaxeshanye.
Nangona iingenelo zale ndlela zicacile, kukho ukurhweba okubalulekileyo. Njengoko kukhankanyiwe ngasentla, indawo ye-rotor kunye ne-stator kufuneka iphathwe kakuhle. I-BLDC brushless motor ukutshintshwa ngokufanelekileyo.Oku kuthetha ukuba kufuneka kuthathelwe ingqalelo ukuze kuqinisekiswe ukuba imijelo ye-U/V/W ye-encoder ye-commutator ihambelana ngokuchanekileyo kunye nesigaba se-motor ye-BLDC.