Ukugoqa ingxenye phakathi kwempompi ephakathi kwentambo, noma phakathi kwezintambo ezimbili (uma kungekho mpompi ephakathi).
I-engeli ejikelezayo yemoto engenamthwalo, kuyilapho izigaba ezimbili eziseduze zivuselelwa
Izinga le-imoto ye-stepperukunyakaza okuqhubekayo.
I-torque ephezulu kakhulu ishaft engamelana nayo ngaphandle kokujikeleza okuqhubekayo, kuyilapho izintambo zomthofu zinqanyuliwe.
I-torque ephezulu kakhulu engaguquki efana ne-shaft ye-ainjini ye-stepperI-compressed nge-current rated ingamelana ngaphandle kokujikeleza okuqhubekayo.
Amazinga aphezulu okushaya kwenhliziyo angasetshenziswa yi-excited stepper motor enomthwalo othile futhi awakwazi ukuhlukanisa amandla.
Amazinga aphezulu okushaya kwenhliziyo angafinyelelwa yi-excited stepper motor eqhuba umthwalo othile futhi angagcini i-desynchronic.
I-torque ephezulu kakhulu engaqala ngayo i-excited stepper motor ngesivinini esithile sokushaya kwenhliziyo futhi ingagcini i-desynchroning.
I-torque ephezulu kakhulu eqhutshwa yi-stepper motor ngaphansi kwezimo ezichazwe ngudokotela kanye ne-pulse rate ethile engamelana nayo futhi ingagcini i-desynchronic.
Ububanzi bejubane lokushaya kwenhliziyo obungaqalwa yi-stepper motor enomthwalo onqunyiwe, bungayimisa noma buyihloniphe, futhi bungagcini i-desynchroning.
I-voltage ephezulu ilinganiswa kulo lonke isigaba, lapho kuthwalwa umgodi wemoto ngesivinini esingaguquki esingu-1000 RPM.
Umehluko phakathi kwama-engeli ahlanganisiwe e-theoretical kanye nama-angles ahlanganisiwe angempela (izikhundla).
Umehluko phakathi kwe-angle yesinyathelo esisodwa kanye ne-angle yangempela yesinyathelo esisodwa.
Umehluko phakathi kwezikhundla zokuma ze-CW ne-CCW.
Isekethe yedrayivu yamanje ye-chopper eqhubekayo uhlobo lwemodi yedrayivu esebenza kangcono futhi isetshenziswa kakhulu njengamanje. Umqondo oyisisekelo ukuthi isilinganiso samanje se-conductive phase winding sigcinwa kungakhathaliseki ukuthiinjini ye-stepperisesimweni sokukhiywa noma isebenza ngemvamisa ephansi noma ephezulu. I-BellowFigure iyi-schematic diagram yesekethe yedrayivu yamanje ye-chopper constant current, lapho kuboniswa khona isekethe yedrayivu yesigaba esisodwa kuphela, kanye nesinye isigaba esifanayo. Ukuvulwa kokugoqa kwesigaba kulawulwa ngokubambisana yishubhu yokushintsha i-VT1 kanye ne-VT2. I-emitter ye-VT2 ixhunywe nokumelana kwesampula i-R, futhi ukwehla kwengcindezi ekumeni kuhambisana ne-I yamanje yokugoqa kwesigaba.
Uma i-UI yokulawula i-pulse iku-voltage ephezulu, amashubhu okushintsha e-VT1 kanye ne-VT2 ayavulwa, futhi ugesi we-dc uhlinzeka ngokugoqa. Ngenxa yethonya lokungena kokugoqa, i-voltage ekumelaneni kokusampula R iyanda kancane kancane. Lapho inani le-voltage enikeziwe i-Ua lidlula, i-comparator ikhipha izinga eliphansi, ukuze isango nalo likhiphe izinga eliphansi. I-VT1 iyanqanyulwa futhi ugesi we-dc uyanqanyulwa. Lapho i-voltage ekumelaneni kokusampula R ingaphansi kwe-voltage enikeziwe i-Ua, ugesi wokuqhathanisa ukhipha izinga eliphezulu, kanti isango nalo likhipha izinga eliphezulu, i-VT1 iyavulwa futhi, futhi ugesi we-dc uqala ukuhlinzeka ngamandla ekugoqa futhi. Ngokuphindaphindiwe, ugesi ekugoqa kwesigaba uyaqiniswa ngenani elinqunywe yi-voltage enikeziwe i-Ua.
Uma usebenzisa i-voltage drive engaguquki, i-voltage yokunikezwa kwamandla ifanelana ne-voltage elinganisiwe yemoto futhi ihlala ingaguquki. Ama-voltage drive angaguquki alula futhi ashibhile kune-constant current drives, alawula i-voltage yokunikezwa ukuqinisekisa ukuthi i-continuous current ehleliwe inikezwa imoto. Ku-voltage drive engaguquki, ukumelana kwesekethe yokushayela kuzokhawulela i-current ephezulu, futhi i-inductance yemoto izokhawulela isivinini lapho i-current ikhuphuka khona. Ngejubane eliphansi, ukumelana kuyisici esikhawulela ukukhiqizwa kwamanje (kanye ne-torque). Imoto ine-torque enhle kanye nokulawula indawo futhi isebenza kahle. Kodwa-ke, njengoba ijubane lemoto landa, i-inductance kanye nesikhathi sokukhuphuka kwamanje kuqala ukuvimbela i-current ukuthi ifinyelele inani layo eliqondiwe. Ngaphezu kwalokho, njengoba ijubane lemoto landa, i-back EMF nayo iyanda, okusho ukuthi i-voltage eyengeziwe yokunikezwa kwamandla isetshenziswa kuphela ukunqoba i-back EMF voltage. Ngakho-ke, isici esiyinhloko se-constant voltage drive ukwehla okusheshayo kwe-torque ekhiqizwa ngejubane eliphansi kakhulu le-stepper motor.
Isekethe yokushayela yemoto ye-bipolar stepper iboniswe kuMfanekiso 2. Isebenzisa ama-transistor ayisishiyagalombili ukushayela amasethi amabili ezigaba. Isekethe yokushayela i-bipolar ingashayela ama-motor e-stepper anezintambo ezine noma ezinezintambo eziyisithupha ngesikhathi esisodwa. Nakuba imoto yezintambo ezine ingasebenzisa isekethe yokushayela i-bipolar kuphela, inganciphisa kakhulu izindleko zokusetshenziswa kokukhiqiza ngobuningi. Inani lama-transistor kusekethe yokushayela i-bipolar stepping motor liphindwe kabili kunesekethe yokushayela i-unipolar. Ama-transistor amane aphansi ngokuvamile aqhutshwa ngqo yi-microcontroller, kanti i-transistor ephezulu idinga isekethe yokushayela i-upper ebiza kakhulu. I-transistor yesekethe yokushayela i-bipolar idinga kuphela ukuthwala i-voltage yemoto, ngakho ayidingi isekethe yokubopha njengesekethe yokushayela i-unipolar.
Ama-Unipolar kanye ne-bipolar yiwona asetshenziswa kakhulu ama-drive circuits asetshenziswa kakhulu ama-stepping motor. I-single-polar driving circuits isebenzisa ama-transistors amane ukushayela amasethi amabili ezigaba ze-stepping motor, kanti isakhiwo sokugoqa i-motor stator sihlanganisa amasethi amabili ama-coil anama-intermediate taps (i-intermediate tap ye-AC coil O, i-BD coil) I-intermediate tap ingu-m), futhi yonke i-motor inemigqa eyisithupha enoxhumano lwangaphandle. Uhlangothi lwe-AC alukwazi ukunika amandla (ukuphela kwe-BD), ngaphandle kwalokho i-magnetic flux ekhiqizwa ama-coil amabili e-magnetic pole iyakhanselana, kuphela ukusetshenziswa kwe-coil okukhiqizwayo. Ngoba empeleni yizigaba ezimbili kuphela (ama-AC windings ayisigaba esisodwa, i-BD winding iyisigaba esisodwa), isitatimende esinembile kufanele sibe yi-two-phase six-wire-(vele, manje sekunemigqa emihlanu, ixhunywe emigqeni emibili yomphakathi) I-Stepping motor.
Isigaba esisodwa, ukugoqa amandla okuvula isigaba esisodwa kuphela, ukushintsha ngokulandelana amandla esigaba akhiqiza i-engeli yesinyathelo esijikelezayo (imishini kagesi ehlukene, ama-degree angu-18 15 7.5 5, injini exubile ama-degree angu-1.8 nama-degree angu-0.9, ama-degree angu-1.8 alandelayo abhekiselwa kule ndlela yokuvuselela, futhi impendulo ye-engeli yokujikeleza lapho i-pulse ngayinye ifika iyanyakaziswa. Uma imvamisa iphezulu kakhulu, kulula ukukhiqiza isikhathi esiphelelwe yisikhathi.
Ukuvuselelwa kwezigaba ezimbili: ukujikeleza kwamanje kwezigaba ezimbili ngesikhathi esisodwa, futhi kusebenzisa indlela yokushintshana kwemisinga yesigaba ngokulandelana, i-engeli yesinyathelo sokuqina kwesigaba sesibili ingu-1.8 degrees, ugesi ophelele wama-sects amabili uphindwe kabili, futhi imvamisa yokuqala ephezulu iyanda, ingatholakala Isivinini esiphezulu, ukusebenza okwengeziwe, okweqile.
1-2 Ukuvuselela: Lena indlela yokwenza ngokushintshana ukuvuselela ngesigaba, ukuvuselela ngezigaba ezimbili, ukuqalisa kwamanje, kokubili kuhlala kushintshana, ngakho-ke i-engeli yesinyathelo ingu-0.9 degrees, ukuvuselela kwamanje kukhulu, futhi ukusebenza ngokweqile kuhle. Imvamisa yokuqala ephezulu nayo iphakeme. Ngokuvamile kwaziwa ngokuthi i-half-way excitation drive
Isikhathi sokuthunyelwe: Julayi-06-2023