Mechini ea litepisie ka sebelisoa bakeng sa taolo ea lebelo le taolo ea ho beha ntle le tšebeliso ea lisebelisoa tsa maikutlo (ke hore taolo e bulehileng), kahoo tharollo ena ea drive e theko e tlaase ebile ea tšepahala. Lisebelisoang tsa othomathike, lisebelisoa, stepper drive e sebelisitsoe haholo. Empa basebelisi ba bangata ba basebetsi ba botekgeniki ba hore na ba ka khetha enjene e nepahetseng ea stepper joang, hore na ba ka etsa ts'ebetso e ntle ka ho fetisisa ea stepper drive kapa ba na le lipotso tse ling. Pampiri ena e bua ka khetho ea li-stepper motors, e shebaneng le ts'ebeliso ea boiphihlelo bo bong ba boenjiniere ba stepper motor, ke tšepa hore ho ata ha li-stepper motors lisebelisoa tsa othomathike ho tla bapala karolo ho referenseng.
1, Selelekela saenjene ea stepper
Enjene ea stepper e boetse e tsejoa e le pulse motor kapa step motor. E tsoela pele ka sekhutlo se itseng nako le nako ha boemo ba ho hlasimolla bo fetoloa ho latela lets'oao la pulse ea ho kenya, 'me e lula e eme sebakeng se itseng ha boemo ba ho hlasimolla bo lula bo sa fetohe. Sena se lumella enjene ea stepper ho fetola lets'oao la pulse ea ho kenya hore e be phetiso e tsamaellanang ea angular bakeng sa tlhahiso. Ka ho laola palo ea li-pulse tsa ho kenya u ka tseba ka nepo phetiso ea angular ea tlhahiso e le ho fihlela boemo bo botle ka ho fetisisa; 'me ka ho laola makhetlo a li-pulse tsa ho kenya u ka laola ka nepo lebelo la angular la tlhahiso le ho fihlela morero oa taolo ea lebelo. Mafelong a bo-1960, mefuta e fapaneng ea li-stepper motors tse sebetsang e ile ea hlaha, 'me lilemo tse 40 tse fetileng li bone nts'etsopele e potlakileng. Li-stepper motors li khonne ho etsa li-DC motors, li-asynchronous motors, hammoho le li-synchronous motors hammoho, e fetoha mofuta oa motheo oa enjene. Ho na le mefuta e meraro ea li-stepper motors: reactive (mofuta oa VR), permanent magnet (mofuta oa PM) le hybrid (mofuta oa HB). Enjene ea hybrid stepper e kopanya melemo ea mefuta e 'meli ea pele ea enjene ea stepper. Enjene ea stepper e na le rotor (rotor core, makenete a sa feleng, shaft, li-ball bearing), stator (e kobehang, stator core), likhetla tse ka pele le tse ka morao, jj. Enjene e tloaelehileng ka ho fetisisa ea hybrid stepper e na le stator e nang le meno a maholo a 8, meno a manyane a 40 le rotor e nang le meno a manyane 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
Theenjene ea stepperHa e khone ho hokahanngoa ka kotloloho le phepelo ea motlakase, leha e le hore e ka fumana matšoao a pulse ea motlakase ka kotloloho, e tlameha ho etsoa ka sebopeho se ikhethileng - mokhanni oa enjene ea stepper ho sebelisana le phepelo ea motlakase le molaoli. Mokhanni oa enjene ea stepper ka kakaretso o entsoe ka mofani oa lesale, le potoloho ea amplifier ea matla. Karolo ea lesale e amohela matšoao a taolo ho tsoa ho molaoli. Nako le nako ha letšoao la pulse le amoheloa, tlhahiso ea karohano ea lesale e fetoloa hang, kahoo boteng kapa ho ba sieo le makhetlo a lets'oao la pulse li ka fumana hore na lebelo la enjene ea stepper le holimo kapa le tlase, le potlakisa kapa le fokotseha ho qala kapa ho emisa. Mofani oa lesale o tlameha hape ho lekola lets'oao la tataiso ho tsoa ho molaoli ho fumana hore na liphetoho tsa boemo ba tlhahiso ea eona li ka tatellano e ntle kapa e mpe, 'me kahoo a fumane hore na ho tsamaisoa ha enjene ea stepper.
3, Li-parameter tse ka sehloohong
①Nomoro ea boloko: haholo-holo 20, 28, 35, 42, 57, 60, 86, jj.
②Nomoro ea Mokhahlelo: palo ea likhoele ka hare ho enjene ea stepper, palo ea mokhahlelo oa enjene ea stepper hangata e na le mekhahlelo e 'meli, mekhahlelo e meraro, le mekhahlelo e mehlano. Chaena e sebelisa lienjene tsa stepper tsa mekhahlelo e 'meli haholo-holo, mekhahlelo e meraro le eona e na le lits'ebetso tse ling. Japane e sebelisoa hangata haholo lienjene tsa stepper tsa mekhahlelo e mehlano
③Sekhutlo sa mohato: se tsamaellanang le lets'oao la pulse, ho falla ha angular ha potoloho ea rotor ea enjene. Foromo ea ho bala sekhutlo sa mohato oa enjene ea stepper ke e latelang.
Sekhutlo sa mohato = 360° ÷ (2mz)
m palo ea mekhahlelo ea enjene ea stepper
Z palo ea meno a rotor ea enjene ea stepper.
Ho ya ka foromo e ka hodimo, sekhutlo sa kgato sa dienjene tsa stepper tsa mekhahlelo e mmedi, mekhahlelo e meraro le mekhahlelo e mehlano ke 1.8°, 1,2° le 0.72° ka ho latellana.
④ Torque e tšoarang: ke torque ea stator e kobehang ea enjene ka har'a motlakase o lekantsoeng, empa rotor ha e potolohe, stator e notlela rotor. Torque e tšoarang ke paramethara ea bohlokoa ka ho fetisisa ea li-stepper motors, 'me ke motheo o ka sehloohong oa khetho ea enjene.
⑤ Torque ea ho beha: ke torque e hlokahalang ho reteleha rotor ka matla a kantle ha enjene e sa fete motlakase. Torque ke e 'ngoe ea litšupiso tsa ts'ebetso ho lekola enjene, tabeng ea liparamente tse ling li tšoana, ha torque ea ho beha e le nyane e bolela hore "phello ea slot" e nyane, e leng se thusang haholo ho boreleli ba enjene e sebetsang ka litšobotsi tsa maqhubu a torque ea lebelo le tlase: haholo-holo e bua ka litšobotsi tsa maqhubu a torque a huloang, ts'ebetso e tsitsitseng ea enjene ka lebelo le itseng e ka mamella torque e phahameng ntle le ho lahleheloa ke mohato. Curve ea motsotso-frequency e sebelisoa ho hlalosa kamano pakeng tsa torque e phahameng le lebelo (maqhubu) ntle le tahlehelo ea mohato. Curve ea maqhubu a torque ke paramethara ea bohlokoa ea enjene ea stepper 'me ke motheo o ka sehloohong oa khetho ea enjene.
⑥ Rated current: enjene winding current e hlokahalang ho boloka torque e lekantsoeng, boleng bo sebetsang
4, Ho khetha lintlha
Likopo tsa indasteri tse sebelisitsoeng lebelong la enjene ea stepper ho fihlela ho 600 ~ 1500rpm, lebelo le phahameng, o ka nahana ka ho khanna enjene ea stepper e koetsoeng, kapa oa khetha mehato e loketseng haholoanyane ea ho khetha enjene ea stepper ea lenaneo la servo drive (sheba setšoantšo se ka tlase).
(1) Khetho ea sekhutlo sa mohato
Ho ya ka palo ya mekhahlelo ya enjene, ho na le mefuta e meraro ya sekhutlo sa mehato: 1.8° (mekgahlelo e mmedi), 1.2° (mekgahlelo e meraro), 0.72° (mekgahlelo e mehlano). Ehlile, sekhutlo sa mohato wa mekhahlelo e mehlano se na le ho nepahala ho hoholo empa enjene le mokhanni wa sona di theko e boima haholo, kahoo ha se hangata se sebediswang Chaena. Ho phaella moo, bakganni ba ka sehloohong ba stepper jwale ba sebedisa theknoloji ya ho kganna karohano, karolong e 4 e ka tlase, ho nepahala ha sekhutlo sa mohato wa karohano ho ntse ho ka netefatswa, kahoo haeba matshwao a ho nepahala ha sekhutlo sa mohato feela ho tswa ho ho nahanelwa, enjene ya mohato wa mekhahlelo e mehlano e ka nkeloa sebaka ke enjene ya mohato wa mekhahlelo e mmedi kapa e meraro. Mohlala, ts'ebelisong ea mofuta o itseng oa lead bakeng sa mojaro oa screw oa 5mm, haeba ho sebelisoa enjene ea mehato e 'meli 'me mokhanni a behiloe likarolong tse 4, palo ea li-pulse ka phetoho ka 'ngoe ea enjene ke 200 x 4 = 800, 'me pulse e lekanang ke 5 ÷ 800 = 0.00625mm = 6.25μm, ho nepahala hona ho ka fihlela boholo ba litlhoko tsa ts'ebeliso.
(2) Khetho ea torque e sa fetoheng (torque e tšoereng)
Mekgwa ya phetiso ya mojaro e sebediswang hangata e kenyeletsa mabanta a tsamaisanang, di-filament bars, rack le pinion, jj. Bareki ba qala ka ho bala mojaro wa bona wa mochini (haholo-holo torque ya ho potlakisa hammoho le torque ya khohlano) e fetotsweng ho torque ya mojaro e hlokahalang ho shaft ya enjene. Ebe, ho ya ka lebelo le phahameng la ho matha le hlokoang ke dipalesa tsa motlakase, maemo a mabedi a fapaneng a tshebediso a latelang ho kgetha torque e loketseng ya ho tshwara ya enjene ya stepper ① bakeng sa tshebediso ya lebelo le hlokahalang la enjene la 300pm kapa ka tlase: haeba mojaro wa mochini o fetolwa ho shaft ya enjene torque ya mojaro e hlokahalang T1, jwale torque ena ya mojaro e atiswa ke ntlha ya polokeho SF (ka kakaretso e nkuwa e le 1.5-2.0), ke hore, torque e hlokahalang ya enjene ya stepper e tshwarang Tn ②2 bakeng sa ditshebediso tse hlokang lebelo la enjene la 300pm kapa ho feta: beha lebelo le phahameng ka ho fetisisa Nmax, haeba mojaro wa mochini o fetolwa ho shaft ya enjene, torque ya mojaro e hlokahalang ke T1, jwale torque ena ya mojaro e atiswa ke ntlha ya polokeho SF (hangata 2.5-3.5), e fanang ka torque ya ho tshwara Tn. Sheba Setšoantšo sa 4 'me u khethe mohlala o loketseng. Ebe u sebelisa mothapo oa maqhubu a motsotso ho hlahloba le ho bapisa: mothapong oa maqhubu a motsotso, lebelo le phahameng ka ho fetisisa Nmax e hlokoang ke mosebelisi le tsamaellana le mothapo o phahameng ka ho fetisisa oa mehato e lahlehileng oa T2, joale mothapo o moholo ka ho fetisisa oa mehato e lahlehileng oa T2 o lokela ho ba moholo ho feta T1 ka 20%. Ho seng joalo, ho hlokahala ho khetha enjene e ncha e nang le torque e kholoanyane, 'me u hlahlobe le ho bapisa hape ho latela mothapo oa maqhubu a torque oa enjene e sa tsoa khethoa.
(3) Ha palo ea motheo oa enjene e le kholoanyane, torque ea ho tšoara e ba kholoanyane.
(4) ho latela motlakase o lekantsoeng ho khetha mokhanni oa stepper ea tsamaellanang.
Mohlala, hona joale e lekantsoeng ea enjene ea 57CM23 ke 5A, ebe u bapisa hona joale e lumelletsoeng ea drive ea ho feta 5A (ka kopo hlokomela hore ke boleng bo sebetsang ho fapana le tlhōrō), ho seng joalo haeba u khetha hona joale e phahameng ea drive ea 3A feela, torque e phahameng ea tlhahiso ea enjene e ka ba 60% feela!
5, phihlelo ea kopo
(1) bothata ba molumo o tlase oa maqhubu a tlase a enjene ea stepper motor
Karohano ea stepper drive ke tsela e atlehang ea ho fokotsa molumo o tlase oa maqhubu a li-stepper motors. Ka tlase ho 150rpm, karohano ea stepper drive e sebetsa hantle haholo ho fokotseng ho thothomela ha enjene. Ka khopolo-taba, ha karohano e le kholoanyane, phello e ba betere ea ho fokotsa ho thothomela ha enjene ea stepper, empa boemo ba 'nete ke hore karohano e eketseha ho fihlela ho 8 kapa 16 kamora hore phello ea ntlafatso ea ho fokotsa ho thothomela ha enjene ea stepper e fihlelle ho feteletseng.
Lilemong tsa morao tjena, ho bile le bakhanni ba stepper ba khahlanong le maqhubu a tlase a resonance ba thathamisitsoeng lapeng le kantle ho naha, letoto la lihlahisoa tsa Leisai's DM, DM-S, theknoloji ea resonance ea maqhubu a tlase a resonance. Letoto lena la bakhanni le sebelisa puseletso ea harmonic, ka puseletso ea amplitude le phase matching, e ka fokotsa haholo ho thothomela ha maqhubu a tlase a enjene ea stepper, ho fihlela ts'ebetso e tlase ea ho thothomela le lerata le tlase la enjene.
(2) Tšusumetso ea karohano ea stepper motor ho nepahaleng ha sebaka
Potoloho ea drive ea karohano ea li-stepper motor e ke ke ea ntlafatsa feela boreleli ba motsamao oa sesebelisoa, empa hape e ka ntlafatsa ka katleho ho nepahala ha sebaka sa lisebelisoa. Liteko li bontša hore: Sethaleng sa motsamao oa drive ea lebanta le lumellanang, karohano ea stepper motor 4, enjene e ka beoa ka nepo mohatong o mong le o mong.
Nako ea poso: Phuptjane-11-2023