I-Stepper motor iyisisetshenziswa esinyakazayo esihlukanisayo, esinokuxhumana okubalulekile nobuchwepheshe besimanje bokulawula idijithali.Kuhlelo lwamanje lokulawula idijithali yasekhaya, ama-motor stepper asetshenziswa kabanzi.Ngokuvela kwazo zonke izinhlelo ze-AC servo zedijithali, ama-AC servo motors asetshenziswa kakhulu ezinhlelweni zokulawula idijithali.Ukuze uvumelane nenqubo yokuthuthukiswa kokulawulwa kwedijithali, ama-stepper motors noma wonke ama-servo motors edijithali e-AC asetshenziswa kakhulu njengamamotho aphezulu ezinhlelweni zokulawula ukunyakaza.Nakuba kokubili kufana kumodi yokulawula (isitimela esishayelayo nesiginali yokuqondisa), kunomehluko omkhulu ekusebenzeni nezikhathi zohlelo.Manje qhathanisa ukusebenza kwakho kokubili.
Ukunemba kokulawula kuhlukile
Ama-engeli esinyathelo wamamotho e-hybrid stepper motors ngokuvamile angu-3.6 degrees kanye no-1.8 degrees, kanti ama-engeli esinyathelo samamotho ayisihlanu e-hybrid stepper motors ngokuvamile angu-0.72 degrees no-0.36 degrees.Kukhona futhi amanye ama-stepper motors asebenza kahle anama-engeli amancane wesinyathelo.Isibonelo, i-step motor ekhiqizwa yi-Stone Company yamathuluzi omshini wezintambo ezihamba kancane ine-engeli yesinyathelo engu-0.09 degrees; i-hybrid stepping motor enezigaba ezintathu ekhiqizwa yi-BERGER LAHR ine-engeli yesinyathelo engu-0.09 degrees. Ukushintsha kwe-DIP kusethelwe ku-1.8 degrees, 0.9 degrees, 0.72 degrees, 0.36 degrees, 0.18 degrees, 0.09 degrees, 0.072 degrees, 0.036 degrees, okuhambisana nesinyathelo se-angle yezigaba ezimbili kanye nezigaba ezinhlanu ze-hybrid stepping motors.
Ukunemba kokulawula kwe-AC servo motor kuqinisekiswa isishumeki esijikelezayo ekugcineni ngemuva kwe-motor shaft.Enjinini enesishumeki semigqa engu-2500 esijwayelekile, ukushaya kwenhliziyo okulingana namadigri angu-360/10000=0.036 ngenxa yobuchwepheshe befrikhwensi ye-quadruple ngaphakathi komshayeli.Emotweni ene-17-bit encoder, ngaso sonke isikhathi lapho umshayeli ethola ama-pulses angu-217=131072, injini yenza inguquko eyodwa, okungukuthi, ukushaya kwenhliziyo yayo okulingana nama-degrees angu-360/131072=9.89 imizuzwana.Ingu-1/655 wokushaya kwenhliziyo okulingana ne-stepper motor ene-step angle engu-1.8 degrees.
Izici zefrikhwensi ephansi zihlukile:
Ama-Stepper motors athambekele ekudlidlizeni kwefrikhwensi ephansi ngesivinini esiphansi.Imvamisa yokudlidliza ihlobene nesimo somthwalo kanye nokusebenza komshayeli. Ngokuvamile kukholakala ukuthi imvamisa yokudlidliza iwuhhafu wefrikhwensi yokungathwali kwemoto.Lesi simo sokudlidliza se-low-frequency vibration esinqunywa isimiso sokusebenza se-steping motor asihambisani neze nokusebenza okuvamile komshini.Uma isitebhisi semoto sisebenza ngesivinini esiphansi, ubuchwepheshe bokudambisa kufanele busetshenziswe ngokujwayelekile ukunqoba into yokudlidliza enemvamisa ephansi, njengokwengeza into encibilikisa amanzi emoteni, noma ukusebenzisa ubuchwepheshe bokuhlukanisa iziqephu kumshayeli, njll.
I-AC servo motor isebenza kahle kakhulu futhi ayidlidlizi ngisho nangesivinini esiphansi.Uhlelo lwe-AC servo lunomsebenzi wokucindezela i-resonance, ongamboza ukuntuleka kokuqina komshini, futhi uhlelo lunomsebenzi wokuhlaziya imvamisa (FFT) ngaphakathi kwesistimu, ekwazi ukubona indawo yokukhala yomshini futhi yenze kube lula ukulungiswa kwesistimu.
Izici zemvamisa yesikhashana zihlukile:
I-torque ephumayo ye-stepper motor iyancipha ngokukhuphuka kwejubane, futhi izokwehla kakhulu ngesivinini esiphezulu, ngakho-ke isivinini sayo esiphezulu sokusebenza ngokuvamile singu-300-600RPM.I-AC servo motor ine-torque ephumayo engashintshi, okungukuthi, ingakhipha i-torque elinganiselwe ngaphakathi kwejubane layo elilinganiselwe (ngokuvamile i-2000RPM noma i-3000RPM), futhi iwukukhipha amandla okuqhubekayo ngaphezu kwejubane elilinganiselwe.
Umthamo wokulayisha ngokweqile uhlukile:
Ama-Stepper motors ngokuvamile awanawo amandla okulayisha ngokweqile.I-AC servo motor inamandla okulayisha ngokweqile.Thatha iPanasonic AC servo system njengesibonelo, inamandla okulayisha ngokweqile kanye netorque.I-torque yayo ephezulu izikhathi ezintathu ze-torque elinganiselwe, engasetshenziswa ukunqoba umzuzu we-inertial yomthwalo ongenayo ngesikhathi sokuqala.Ngenxa yokuthi i-stepper motor ayinalo lolu hlobo lomthamo wokulayisha ngokweqile, ukuze unqobe lo mzuzu we-inertia lapho ukhetha imodeli, ngokuvamile kudingekile ukukhetha injini ene-torque enkulu, futhi umshini awudingi i-torque enkulu ngesikhathi. ukusebenza okuvamile, ngakho-ke i-torque ibonakala. Ukwenzeka kwemfucuza.
Ukusebenza okusebenzayo kuhlukile:
Ukulawula i-steping motor iyi-open-loop control. Uma imvamisa yokuqala iphezulu kakhulu noma umthwalo mkhulu kakhulu, ukulahleka kwesinyathelo noma ukuma kuzokwenzeka kalula. Uma ijubane liphezulu kakhulu, ukudubuleka ngokweqile kuzokwenzeka kalula uma isivinini siphezulu kakhulu. Ngakho-ke, ukuze kuqinisekiswe ukunemba kokulawula kwayo, kufanele kuphathwe ngendlela efanele. Izinkinga zokukhuphuka nokwehla.Uhlelo lwe-AC servo drive luyi-closed-loop control. Idrayivu ingasampula ngokuqondile isignali yempendulo yesishumeki semoto, futhi iluphu yendawo yangaphakathi nelophu yesivinini kuyakhiwa. Ngokuvamile, ngeke kube khona ukulahlekelwa kwesinyathelo noma ukudubula ngokweqile kwe-steping motor, futhi ukusebenza kokulawula kunokwethenjelwa kakhulu.
Ukusebenza kwempendulo yesivinini kuhlukile:
Kuthatha ama-millisecond angu-200-400 ukuze i-stepper motor isheshise isuke lapho imile iye esivinini sokusebenza (imvamisa iphenduka amakhulu ambalwa ngomzuzu).Ukusebenza kokusheshisa kwesistimu ye-AC servo kungcono. Uma sithatha i-CRT AC servo motor njengesibonelo, kuthatha ama-millisecond ambalwa kuphela ukusheshisa ukusuka ku-static ukuya kusivinini sayo esilinganiselwe esingu-3000RPM, esingasetshenziswa ezikhathini zokulawula ezidinga ukuqala nokuma ngokushesha.
Ukufingqa, uhlelo lwe-AC servo luphakeme kune-stepper motor ezicini eziningi zokusebenza.Kepha kwezinye izikhathi ezingafuneki kangako, ama-stepper motors avame ukusetshenziswa njengama-executive motors.Ngakho-ke, enqubweni yokuklama yesistimu yokulawula, izici ezihlukahlukene ezifana nezidingo zokulawula nezindleko kufanele zicatshangelwe ngokugcwele, futhi kufanele kukhethwe injini yokulawula efanele.
I-stepper motor iyi-actuator eguqula ama-pulses kagesi abe yi-angular displacement.Ngokwemibandela ye-layman: lapho umshayeli we-stepper ethola isignali ye-pulse, ushayela i-stepper motor ukuze ijikeleze i-angle engashintshi (kanye ne-angle yesinyathelo) ekuqondeni okuhleliwe.
Ungakwazi ukulawula ukufuduka kwe-angular ngokulawula inani lama-pulses, ukuze ufeze inhloso yokuma okunembile; ngesikhathi esifanayo, ungakwazi ukulawula isivinini nokusheshisa ukujikeleza kwemoto ngokulawula imvamisa ye-pulse, ukuze ufeze inhloso yokulawula isivinini.
Kunezinhlobo ezintathu zama-motor stepper: uzibuthe unomphela (PM), osebenzayo (VR) kanye ne-hybrid (HB).
Ukunyathela kukazibuthe okuhlala njalo kuvame ukuba yizigaba ezimbili, kunetorque encane nevolumu, kanti i-engeli yesinyathelo ngokuvamile iba ngamadigri angu-7.5 noma angu-15;
Ukunyathela okusebenzayo ngokuvamile kuyizigaba ezintathu, ezikwazi ukubona ukuphuma kwetorque enkulu, futhi i-engeli yokunyathela ngokuvamile iba amadigri angu-1.5, kodwa umsindo nokudlidliza kukhulu kakhulu.Emazweni athuthukile njengaseYurophu nase-United States, iye yaqedwa ngawo-1980;
i-hybrid stepper ibhekisela ekuhlanganisweni kwezinzuzo zohlobo lukazibuthe oluhlala njalo kanye nohlobo olusebenzayo.Ihlukaniswe ngezigaba ezimbili nezigaba ezinhlanu: i-engeli yesinyathelo sezigaba ezimbili ngokuvamile ingamadigri angu-1.8 kanti i-engeli yesinyathelo sesigaba ezinhlanu ngokuvamile ingu-0.72 degrees.Lolu hlobo lwe-stepper motor lusetshenziswa kakhulu.
Isikhathi sokuthumela: Mar-25-2023