Ukujika kwenxalenye phakathi kwempompo yocingo oluphakathi, okanye phakathi kweengcingo ezimbini (xa kungekho mpompo yocingo oluphakathi).
I-engile ejikelezileyo yemoto engenamthwalo, ngelixa iinqanaba ezimbini ezikufutshane zivuselelwa
Izinga leimoto yestepperintshukumo eqhubekayo yokunyathela.
I-torque ephezulu enokumelana ne-shaft ngaphandle kokujikeleza okuqhubekayo, ngelixa iingcingo ze-lead ziqhagamshelwe ngaphandle.
I-torque ephezulu engashukumiyo efana ne-shaft ye-aimoto ye-stepperI-compressed with rated current inokumelana ngaphandle kokujikeleza okuqhubekayo.
Amanqanaba aphezulu okubetha kwentliziyo anokuqaliswa yimoto ye-excited stepper enomthwalo othile kwaye akukho kususwa kwe-synchronizing.
Amanqanaba aphezulu okubetha kwentliziyo anokufikelela kuwo i-excited stepper motor eqhuba umthwalo othile kwaye angagcini i-desynchroning.
I-torque ephezulu enokuqaliswa yi-excited stepper motor kwisantya esithile se-pulse kwaye ayigcini i-desynchroning.
I-torque ephezulu enokunyanyezelwa yi-stepper motor phantsi kweemeko ezimiselweyo kunye nesantya esithile se-pulse kwaye ayigcini i-desynchroning.
Uluhlu lwesantya sentliziyo olunokuthi luqaliswe, luyekiswe okanye luhlonitshwe yimoto ye-stepper enomthwalo omiselweyo, kwaye aluyi kugcina i-desynchroning.
I-voltage ephezulu ilinganiswa kwisigaba ngasinye, xa kuthwalwa umngxuma wemoto ngesantya esingaguqukiyo se-1000 RPM.
Umahluko phakathi kwee-angles ezidityanisiweyo zethiyori kunye nezokwenyani.
Umahluko phakathi kwe-angle yethiyori kunye neyokwenyani yenyathelo elinye.
Umahluko phakathi kweendawo zokuma ze-CW kunye ne-CCW.
I-Chopper constant current drive circuit luhlobo lwendlela yokuqhuba esebenza ngcono kwaye isetyenziswa ngakumbi okwangoku. Ingcamango esisiseko kukuba umlinganiselo wangoku we-conductive phase winding uyagcinwa nokubaimoto ye-stepperikwimeko yokutshixwa okanye isebenza kwi-frequency ephantsi okanye ephezulu. Umfanekiso ongezantsi ngumzobo we-schematic we-chopper constant current drive circuit, apho kuboniswa i-phase drive circuit enye kuphela, kwaye enye i-phase iyafana. Ukuvulwa kwe-phase winding kulawulwa ngokudibeneyo yi-switching tube VT1 kunye ne-VT2. I-emitter ye-VT2 iqhagamshelwe kwi-sampling resistance R, kwaye ukuhla koxinzelelo kwi-resistance kuhambelana ne-current I ye-phase winding.
Xa i-control pulse UI ikwi-voltage ephezulu, zombini ii-switch tubes ze-VT1 kunye ne-VT2 ziyavulwa, kwaye umbane we-dc ubonelela nge-winding. Ngenxa yempembelelo ye-inductance ye-winding, i-voltage kwi-sampling resistance R iyanda kancinci kancinci. Xa ixabiso le-voltage enikiweyo i-Ua lidluliwe, i-comparator ikhupha inqanaba eliphantsi, ukuze i-gate nayo ikhuphe inqanaba eliphantsi. I-VT1 iyanqunyulwa kwaye umbane we-dc uyanqunyulwa. Xa i-voltage kwi-sampling resistance R ingaphantsi kwe-voltage enikiweyo i-Ua, i-comparator ikhupha inqanaba eliphezulu, kwaye i-gate nayo ikhupha inqanaba eliphezulu, i-VT1 iyavulwa kwakhona, kwaye umbane we-dc uqala ukubonelela umbane kwi-winding kwakhona. Ngokuphindaphindiweyo, umbane kwi-phase winding uzinziswe ngexabiso elimiselwe yi-voltage enikiweyo i-Ua.
Xa usebenzisa i-constant voltage drive, i-power supply voltage ihambelana ne-rated voltage yemoto kwaye ihlala injalo. Ii-constant voltage drives zilula kwaye zibiza kancinci kunee-constant current drives, ezilawula i-supply voltage ukuqinisekisa ukuba i-continuous current inikwa i-motor. Kwi-constant voltage drive, ukumelana kwe-drive circuit kuya kunciphisa i-maximum current, kwaye i-inductance yemoto iya kunciphisa isantya apho i-current inyuka khona. Ngesantya esiphantsi, i-resistance yinto ethintelayo kwi-current (kunye ne-torque). I-motor inolawulo oluhle lwe-torque kunye nokubeka kwaye isebenza kakuhle. Nangona kunjalo, njengoko isantya se-motor sisanda, i-inductance kunye nexesha lokunyuka kwamanje ziqala ukuthintela i-current ukuba ifikelele kwixabiso layo elijoliswe kulo. Ngaphezu koko, njengoko isantya se-motor sisanda, i-back EMF nayo iyanda, oko kuthetha ukuba i-power supply voltage engaphezulu isetyenziselwa kuphela ukoyisa i-back EMF voltage. Ke ngoko, ingxaki ephambili ye-constant voltage drive kukwehla ngokukhawuleza kwe-torque eveliswa ngesantya esiphantsi se-stepper motor.
Isekethe yokuqhuba yemoto ye-bipolar stepper iboniswe kuMfanekiso 2. Isebenzisa ii-transistor ezisibhozo ukuqhuba iiseti ezimbini zezigaba. Isekethe yokuqhuba ye-bipolar ingaqhuba ii-motor ze-stepper ezine-wire okanye ezine-wire ezintandathu ngaxeshanye. Nangona imoto ye-four-wire ingasebenzisa isekethe yokuqhuba ye-bipolar kuphela, inokunciphisa kakhulu iindleko zokusetyenziswa kwemveliso ngobuninzi. Inani lee-transistor kwisekethe yokuqhuba ye-bipolar stepping motor liphindwe kabini kunesekethe yokuqhuba ye-unipolar. Ii-transistor ezine ezisezantsi zihlala ziqhutywa ngokuthe ngqo yi-microcontroller, kwaye i-transistor ephezulu ifuna isekethe yokuqhuba ye-upper ebiza kakhulu. I-transistor yesekethe yokuqhuba ye-bipolar kufuneka ithwale i-motor voltage kuphela, ngoko ayidingi circuit ye-clamp njengesekethe yokuqhuba ye-unipolar.
Ii-Unipolar kunye ne-bipolar zezona circuits zokuqhuba ezisetyenziswa kakhulu ziimoto zokunyathela. Isekethe yokuqhuba ene-single-polar isebenzisa ii-transistors ezine ukuqhuba iiseti ezimbini zezigaba zemoto yokunyathela, kwaye isakhiwo sokujikelezisa i-motor stator siquka iiseti ezimbini zeekhoyili ezinee-intermediate taps (i-intermediate tap ye-AC coil O, i-BD coil) I-intermediate tap yi-m), kwaye yonke i-motor inemigca emithandathu iyonke enonxibelelwano lwangaphandle. Icala le-AC alinakunika amandla (i-BD end), kungenjalo i-magnetic flux eveliswa zii-coil ezimbini kwi-magnetic pole iyarhoxisana, kuphela ukusetyenziswa kobhedu kwekhoyili okuveliswayo. Ngenxa yokuba eneneni zii-phase ezimbini kuphela (ii-AC windings zi-phase enye, i-BD winding yi-phase enye), ingxelo echanekileyo kufuneka ibe yi-two-phase six-wire-wire (ewe, ngoku kukho imigca emihlanu, iqhagamshelwe kwimigca emibini kawonkewonke) I-Stepping motor.
Isigaba esinye, ukujija kwamandla kuphela isigaba esinye, ukutshintsha ngokulandelelana umsinga wesigaba ovelisa i-engile yesinyathelo esijikelezayo (oomatshini bombane abahlukeneyo, iidigri ezili-18 15 7.5 5, iimoto ezixutyiweyo iidigri ezili-1.8 kunye needigri ezili-0.9, ezi digri zili-1.8 zilandelayo zibhekiselwe kule ndlela yokuvusa, kwaye impendulo ye-engile yokujikeleza xa i-pulse nganye ifika iyashukuma. Ukuba i-frequency iphezulu kakhulu, kulula ukuvelisa i-expired-date.
Uvuselelo lwezigaba ezibini: ujikelezo lwangoku lwezigaba ezibini ngaxeshanye, lukwasebenzisa indlela yokutshintsha ujikelezo lwezigaba ngokulandelelana, i-engile yenyathelo lobunzulu besigaba sesibini yi-1.8 degrees, ujikelezo lwangoku lwezigaba ezibini luphindwe kabini, kwaye umjikelo wokuqala ophezulu uyanda, unokufunyanwa ngesantya esiphezulu, ukusebenza okongezelelweyo, okugqithisileyo.
1-2 Ukuvuselela: Le yindlela yokwenza ngokutshintshiselana ukuvuselela ngesigaba, ukuvuselela ngezigaba ezibini, ukuqalisa ngombane, zombini zihlala zitshintsha, ngoko ke i-engile yesinyathelo yi-0.9 degrees, ukuvuselela ngombane mkhulu, kwaye ukusebenza okugqithisileyo kulungile. Ubuninzi bokuqala buphezulu. Ngokuqhelekileyo kwaziwa njenge-half-way excitation drive
Ixesha lokuthumela: Julayi-06-2023