Li-motors tsa steppere ka sebelisoa bakeng sa taolo ea lebelo le taolo ea boemo ntle le tšebeliso ea lisebelisoa tsa maikutlo (ke hore taolo e bulehileng), kahoo tharollo ena ea koloi ke ea moruo ebile e ka tšeptjoa. Ka thepa ea boiketsetso, lisebelisoa, li-stepper drive li sebelisitsoe haholo. Empa basebelisi ba bangata ba basebetsi ba tekheniki mabapi le mokhoa oa ho khetha mochini o nepahetseng oa stepper, mokhoa oa ho etsa ts'ebetso e ntle ka ho fetisisa ea drive ea stepper kapa ho ba le lipotso tse ling. Pampiri ena e bua ka khetho ea li-motors tsa stepper, tse shebaneng le ts'ebeliso ea boiphihlelo bo itseng ba boenjiniere ba li-stepper, ke ts'epa hore ho tsebahala ha li-motors tsa stepper ho lisebelisoa tsa boits'oaro ho bapala karolo ea boits'oaro.
1、 Kenyelletso eastepper motor
Enjene ea stepper e boetse e tsejoa e le pulse motor kapa step motor. E hatela pele ka angle e itseng nako le nako ha boemo ba ho hlasimoloha bo fetoloa ho latela lets'oao la ho kenya letsoho, 'me e lula e eme sebakeng se itseng ha boemo ba ho hlasimoloha bo sa fetohe. Sena se lumella motor stepper ho fetolela lets'oao la pulse hore e be sebaka se tsamaisanang sa angular bakeng sa tlhahiso. Ka ho laola palo ea li-pulses tsa ho kenya letsoho u ka tseba ka nepo ho falla ha angular ea tlhahiso e le hore u finyelle boemo bo botle ka ho fetisisa; 'me ka ho laola makhetlo a li-pulses tsa ho kenya letsoho u ka khona ho laola ka nepo lebelo la li-angular tsa tlhahiso le ho finyella morero oa taolo ea lebelo. Ho elella bofelong ba lilemo tsa bo-1960, ho ile ha e-ba le mefuta e mengata ea li-stepper motors, 'me lilemong tse 40 tse fetileng li bone tsoelo-pele e potlakileng. Li-motors tsa Stepper li khonne ho li-motor tsa DC, li-asynchronous motors, hammoho le li-motor tse lumellanang haufi, ho fetoha mofuta oa mantlha oa enjene. Ho na le mefuta e meraro ea li-motors tsa stepper: reactive (mofuta oa VR), makenete e sa feleng (mofuta oa PM) le lebasetere (mofuta oa HB). Enjene ea hybrid stepper e kopanya melemo ea mefuta e 'meli ea pele ea enjene ea stepper. The stepper motor e na le rotor (rotor core, magnets ka ho sa feleng, shaft, bolo bearings), stator (matsoelintsoeke, li-stator core), li-caps tse ka pele le tse ka morao, joalo-joalo E tloaelehileng ka ho fetisisa ea mekhahlelo e 'meli ea li-hybrid stepper motor e na le stator e nang le meno a maholo a 8, meno a manyenyane a 40 le rotor e nang le meno a manyenyane a 50; enjene ea mekhahlelo e meraro e na le stator e nang le meno a maholo a 9, meno a manyane a 45 le rotor e nang le meno a manyane a 50.
2、Molao-motheo oa taolo
Thestepper motore ke ke ea hokahanngoa ka kotloloho ho phepelo ea motlakase, ebile e ke ke ea amohela ka kotloloho matšoao a motlakase oa motlakase, e tlameha ho lemohuoa ka sebopeho se ikhethileng - mokhanni oa motor stepper ho sebelisana le phepelo ea motlakase le molaoli. Mokhanni oa stepper motor hangata o entsoe ka se tsamaisang selikalikoe, le potoloho ea amplifier ea matla. Karohano ea selikalikoe e fumana matšoao a taolo ho tsoa ho molaoli. Nako le nako ha lets'oao la pulse le amoheloa tlhahiso ea sekhetho sa lesale e fetoloa hang, ka hona ho ba teng kapa ho ba sieo le khafetsa ea lets'oao la pulse ho ka etsa qeto ea hore na lebelo la motor ea stepper le phahame kapa le tlase, le potlakisa kapa le fokotseha ho qala kapa ho emisa. Morekisi oa selikalikoe o boetse o tlameha ho lekola lets'oao la tataiso ho tsoa ho molaoli ho bona hore na liphetoho tsa boemo ba eona li maemong a matle kapa a mpe, 'me ka hona a tsebe hore na mokhanni oa stepper o tla tsamaisoa joang.
3, Mehato e ka sehloohong
①Nomoro ea thibela: haholo-holo 20, 28, 35, 42, 57, 60, 86, joalo-joalo.
②Nomoro ea mohato: palo ea li-coil ka har'a mochini oa stepper, nomoro ea mohato oa mohato ka kakaretso e na le mekhahlelo e 'meli, ea mekhahlelo e meraro, ea mekhahlelo e mehlano. China e sebelisa li-motor tsa mekhahlelo e 'meli haholo-holo, mekhahlelo e meraro e boetse e na le lits'ebetso tse ling. Japane e sebelisoa hangata li-motor tsa mekhahlelo e mehlano
③ Mohato oa mohato: o tsamaellanang le lets'oao la ho otla ha pelo, ho falla ha angolar ho potoloha ha koloi. Mokhoa oa ho bala oa stepper motor step angle o ka tsela e latelang
Lekhalo la mohato = 360° ÷ (2mz)
m palo ea mekhahlelo ea enjene ea stepper
Z palo ea meno a rotor ea stepper motor.
Ho ea ka mokhoa o ka holimo, lebelo la mohato oa li-motor tsa mekhahlelo e 'meli, tse tharo le tse hlano ke 1.8 °, 1,2 ° le 0.72 ° ka ho latellana.
④ Ho tšoara torque: ke torque ea stator matsoelintsoeke ea enjene ka lebelo le lekantsoeng, empa rotor ha e potoloha, stator e notlela rotor. Ho ts'oara torque ke paramente ea bohlokoa ka ho fetisisa ea li-motors tsa stepper, 'me ke motheo o ka sehloohong oa khetho ea likoloi
⑤ Positioning torque: ke torque e hlokahalang ho fetola rotor ka matla a ka ntle ha motlakase o sa fete hona joale. Torque ke e 'ngoe ea matšoao a ts'ebetso ea ho lekola enjene, maemong a li-parameter tse ling li ts'oana, ha torque e emeng e nyane e bolela hore "ts'ebetso ea slot" e nyane, ho na le molemo ho feta ho boreleli ba koloi e mathang ka lebelo le tlase la lebelo la maqhubu a torque: haholo e bua ka litšobotsi tsa maqhubu a torque, ts'ebetso e tsitsitseng ea motor ka lebelo le itseng ntle le ho mamella lebelo le itseng. Nako-frequency curve e sebelisetsoa ho hlalosa kamano pakeng tsa torque e kholo le lebelo (frequency) ntle le tahlehelo ea mohato. Torque frequency curve ke paramente ea bohlokoa ea mothapo oa stepper mme ke motheo o ka sehloohong oa khetho ea makoloi.
⑥ Hona joale e lekantsoeng: motlakase oa motlakase o hlokahalang ho boloka torque e lekantsoeng, boleng bo sebetsang
4. Ho khetha lintlha
Lisebelisoa tsa indasteri tse sebelisoang ho lebelo la koloi ea stepper ho fihla ho 600 ~ 1500rpm, lebelo le phahameng, o ka nahana ka ho koaloa ha loop stepper motor drive, kapa khetha mehato e nepahetseng haholoanyane ea ho khetha servo drive (bona setšoantšo se ka tlase).
(1) Khetho ea mohato oa mohato
Ho ea ka palo ea mekhahlelo ea motlakase, ho na le mefuta e meraro ea mohato oa mohato: 1.8 ° (mekhahlelo e 'meli), 1.2 ° (mehato e meraro), 0.72 ° (mehato e mehlano). Ha e le hantle, mohato oa mehato e mehlano o na le ho nepahala ho phahameng ka ho fetisisa empa motlakase oa oona le mokhanni oa oona o theko e boima haholo, kahoo ha o sebelisoe ka seoelo Chaena. Ho phaella moo, bakhanni ba ka sehloohong stepper hona joale ba sebelisa thekenoloji karohano khanna, ka 4 karohano mona ka tlase, karohano mohato angle ho nepahala ho ntse ho ka tiisetsoa, kahoo haeba mohato angle ho nepahala litsupa mong ho tloha nahanela, tse hlano-mohato stepper enjene ka nkeloa sebaka ke tse peli-mohato kapa tse tharo-mohato stepper enjene. Ka mohlala, ha ho sebelisoa mofuta o itseng oa loto bakeng sa boima ba 5mm screw, haeba ho sebelisoa mochine oa mehato e 'meli' me mokhanni o behiloe likarolong tse 4, palo ea maqhubu a motlakase ka phetohelo ea motlakase ke 200 x 4 = 800, 'me tekanyo ea pulse ke 5 ÷ 800 = 0.006.5mm ea kopo ea accura = 0.006.5mm ditlhoko.
(2) Khetho ea torque e tsitsitseng (ho tšoara torque).
Mekhoa ea phetisetso ea mojaro e sebelisoang ka tloaelo e kenyelletsa mabanta a synchronous, li-filament bars, rack le pinion, joalo-joalo Bareki ba qala ho bala mojaro oa mochini oa bona (haholo-holo torque ea acceleration plus friction torque) e fetoletsoeng ho torque ea mojaro e hlokahalang mochining oa motlakase. Joale, ho latela lebelo le phahameng la ho matha le hlokoang ke lipalesa tsa motlakase, linyeoe tse peli tse latelang tse fapaneng tsa tšebeliso ea ho khetha torque e nepahetseng ea mochini oa stepper ① bakeng sa ts'ebeliso ea lebelo le hlokahalang la koloi ea 300pm kapa ka tlase: haeba mojaro oa mochini o fetoloa hore o be mothapo oa motlakase o hlokahalang torque T1, torque ena ea mojaro e atolosoa ke ts'ireletso e hlokahalang joalo ka SF. motor hold torque Tn ②2 bakeng sa lits'ebetso tse hlokang lebelo la koloi ea 300pm kapa ho feta: beha lebelo le phahameng la Nmax, haeba mojaro oa mochini o fetoloa ho shaft ea motor, torque e hlokahalang ke T1, ebe torque ena ea mojaro e atolosoa ke ntlha ea polokeho SF (hangata 2.5-3.5), e fanang ka torque e ts'oereng Tn. Sheba Setšoantšo sa 4 ebe u khetha mohlala o loketseng. Ebe u sebelisa nako-frequency curve ho hlahloba le ho bapisa: ka motsotsoana-frequency curve, lebelo le phahameng la Nmax le hlokoang ke mosebedisi le lumellana le tekanyo e phahameng e lahlehileng ea mohato oa T2, joale tekanyo e phahameng e lahlehileng ea T2 e lokela ho ba ho feta 20% e kholo ho feta T1. Ho seng joalo, hoa hlokahala ho khetha enjene e ncha e nang le torque e kholoanyane, 'me u hlahlobe le ho bapisa hape ho latela lebelo la maqhubu a enjene e sa tsoa khethoa.
(3) Ha palo ea enjene e le kholoanyane, torque e ts'oaroang e kholoanyane.
(4) ho ea ka sekhahla se lekantsoeng ho khetha mokhanni oa stepper o ts'oanang.
Ka mohlala, tekanyo ea hona joale ea motlakase 57CM23 ke 5A, ebe o lumellana le matla a phahameng a ho khanna a fetang 5A (ka kopo hlokomela hore ke boleng bo sebetsang ho e-na le tlhōrō), ho seng joalo haeba u khetha boholo ba hona joale ba koloi ea 3A feela, torque e kholo ea motlakase e ka ba 60% feela!
5, phihlelo ea kopo
(1) stepper motor low frequency resonance bothata
Subdivision stepper drive ke mokhoa o sebetsang oa ho fokotsa molumo o tlase oa maqhubu a li-motors tsa stepper. Ka tlase ho 150rpm, koloi ea karohano e sebetsa haholo ho fokotsa ho sisinyeha ha enjene. Ka khopolo, ha karohano e kholoanyane, ho na le phello e ntle ea ho fokotsa ho sisinyeha ha stepper motor, empa boemo ba sebele ke hore karohano e nyolohela ho 8 kapa 16 ka mor'a hore ntlafatso ea ho fokotsa ho sisinyeha ha stepper motor e fihlile ho feteletseng.
Lilemong tsa morao tjena, ho bile le bakhanni ba anti-low-frequency resonance stepper ba thathamisitsoeng hae le kantle ho naha, Leisai's DM, DM-S letoto la lihlahisoa, theknoloji ea anti-low-frequency resonance. Letoto lena la bakhanni le sebelisa matšeliso a harmonic, ka puseletso ea amplitude le phallo e bapisang, e ka fokotsa haholo ho sisinyeha ha lebelo le tlase la enjene ea stepper, ho fihlela ho thothomela ho tlase le ts'ebetso e tlase ea lerata.
(2) Tšusumetso ea karohano ea li-stepper motor mabapi le ho nepahala ha maemo
Stepper motor subdivision drive circuit e ke ke ea ntlafatsa feela boreleli ba motsamao oa sesebelisoa, empa hape e ka ntlafatsa boemo bo nepahetseng ba lisebelisoa. Liteko li bonts'a hore: Sethaleng sa ho tsamaisa lebanta la synchronous, karohano ea stepper motor 4, enjene e ka beoa hantle mohatong o mong le o mong.
Nako ea poso: Jun-11-2023