Kuchokera pa sitepe ayenera anaphonya kugunda si kusuntha kwa malo otchulidwa. Kuwombera kwakukulu kuyenera kukhala kosiyana ndi kunja kwa sitepe, kusuntha kupitirira malo omwe atchulidwa.
Stepper motorsNthawi zambiri amagwiritsidwa ntchito m'machitidwe oyendetsa kayendetsedwe kake komwe kuwongolera kumakhala kosavuta kapena komwe kukufunika mtengo wotsika. Ubwino waukulu ndikuti malo ndi liwiro zimayendetsedwa momasuka. Koma ndendende chifukwa ndi lotseguka-lupu kulamulira, malo katundu alibe ndemanga pa kuzungulira kulamulira, ndi galimoto stepper ayenera kuyankha molondola kusintha kulikonse chisangalalo. Ngati ma frequency osangalatsa sanasankhidwe moyenera, mota ya stepper sangathe kupita kumalo atsopano. Malo enieni a katunduyo akuwoneka kuti ali ndi vuto losatha poyerekeza ndi malo omwe akuyembekezeredwa ndi woyang'anira, mwachitsanzo, zochitika zakunja kapena kupitirira malire kumaganiziridwa. Chifukwa chake, mu stepper motor open-loop control system, momwe mungapewere kutayika kwa masitepe ndi kupitilira apo ndiye chinsinsi cha magwiridwe antchito a dongosolo lotseguka lotseguka.
Zochitika zosawerengeka komanso zosawerengeka zimachitika pamenestepper motaimayamba ndi kuyima, motero. Nthawi zambiri, malire a dongosolo loyambira pafupipafupi amakhala otsika, pomwe liwiro lofunikira lantchito nthawi zambiri limakhala lalitali. Ngati dongosololi linayambika mwachindunji pa liwiro lofunika lothamanga, chifukwa liwiro ladutsa malire, mafupipafupi oyambira ndipo sangathe kuyambika bwino, kuyambira ndi sitepe yotayika, yolemetsa sungayambe nkomwe, zomwe zimapangitsa kuzungulira kotsekedwa. Pambuyo pa dongosololi, ngati mapeto afika nthawi yomweyo amasiya kutumiza ma pulses, kotero kuti amasiya nthawi yomweyo, ndiye chifukwa cha inertia ya dongosolo, stepper motor idzatembenuza malo oyenera ndi wolamulira.
Pofuna kuthana ndi podutsa sitepe ndi overshoot chodabwitsa, ayenera kuonjezedwa pa chiyambi-siyani yoyenera mathamangitsidwe ndi kuwongolera deceleration. Nthawi zambiri timagwiritsa ntchito: Khadi lowongolera zoyenda pagawo lakumtunda, PLC yokhala ndi ntchito zowongolera zida zapamwamba, microcontroller yagawo lapamwamba lowongolera kuwongolera kuthamanga ndi kutsika kumatha kuthana ndi vuto la kutayika kopitilira muyeso.
M'mawu a layman: woyendetsa stepper akalandira chizindikiro cha pulse, amayendetsastepper motakutembenuza ngodya yokhazikika (ndi ngodya ya sitepe) mu njira yokhazikitsidwa. Mutha kuwongolera kuchuluka kwa ma pulses kuwongolera kuchuluka kwa kusamuka kwa angular, kuti mukwaniritse cholinga chokhazikika; pa nthawi yomweyo, mukhoza kulamulira zimachitika pafupipafupi kulamulira liwiro ndi mathamangitsidwe wa kasinthasintha galimoto, kuti akwaniritse cholinga lamulo liwiro. Magalimoto a Stepper ali ndi gawo laukadaulo: ma frequency oyambira osanyamula katundu, ndiye kuti, ma stepper motor pakakhala kuti palibe ma pulse frequency amatha kuyamba bwino. Ngati kugunda pafupipafupi ndi apamwamba kuposa palibe katundu chiyambi pafupipafupi, ndi stepper galimoto sangathe kuyamba bwino, zikhoza kuchitika kutaya masitepe kapena kutsekereza chodabwitsa. Pankhani ya katundu, mafupipafupi oyambira ayenera kukhala ochepa. Ngati galimotoyo iyenera kusinthasintha mothamanga kwambiri, mafupipafupi a pulse ayenera kukhala ndi njira yowonjezereka yowonjezereka, mwachitsanzo, mafupipafupi oyambira amakhala otsika kenako amakwera mpaka ma frequency omwe amafunidwa pa liwiro linalake (liwiro lagalimoto limakwera kuchokera kumunsi kupita ku liwiro lalikulu).
Kuyambira pafupipafupi = liwiro loyambira × masitepe angati pakusintha.Liwiro loyambira lopanda katundu ndi stepper motor popanda kuthamanga kapena kutsika popanda katundu mozungulira molunjika. Pamene stepper motor imazungulira, inductance ya gawo lililonse la mafunde agalimoto imapanga mphamvu yamagetsi yosinthira; kumtunda kwa ma frequency, kumapangitsanso mphamvu yamagetsi yakumbuyo. Pansi pakuchita kwake, injini yokhala ndi ma frequency (kapena liwiro) imawonjezeka ndipo gawo lapano limachepa, zomwe zimabweretsa kuchepa kwa torque.
Tiyerekeze: torque yonse ya chotsitsacho ndi T1, liwiro lotulutsa ndi N1, chiŵerengero chochepetsera ndi 5: 1, ndipo makwerero a stepper motor ndi A. Kenako liwiro la galimoto ndi: 5 * (N1), ndiye kuti torque yamoto iyenera kukhala (T1) / 5, ndipo maulendo oyendetsa galimoto ayenera kukhala.
5*(N1)*360/A, chifukwa chake muyenera kuyang'ana pamapindikira-kanthawi kochepa: malo olumikizirana [(T1)/5, 5*(N1)*360/A] sali pansi pa mapindikidwe amtundu wafupipafupi (kuyambira mphindi-fupipafupi pamapindikira). Ngati ili pansipa pamapindikira pafupipafupi, mutha kusankha mota iyi. Ngati ili pamwamba pa nthawi yokhotakhota, ndiye kuti simungathe kusankha motayi chifukwa idzaphonya sitepe, kapena osatembenuka konse.
Kodi mumadziwa momwe ntchito ikugwirira ntchito, muyenera kuthamanga kwambiri, ngati mwatsimikiza, ndiye kuti mukhoza kuwerengera molingana ndi ndondomeko yomwe yaperekedwa pamwambapa, (kutengera kuthamanga kwakukulu kwa kasinthasintha, ndi kukula kwa katunduyo, mukhoza kudziwa ngati stepper motor yomwe mwasankha tsopano ndi yoyenera, ngati sichoncho muyenera kudziwa mtundu wa galimoto yomwe mungasankhe).
Komanso, stepper galimoto mu chiyambi pambuyo katundu akhoza zosasinthika, ndiyeno kuonjezera pafupipafupi, chifukwastepper motamphindi pafupipafupi pamapindikira ayenera kwenikweni awiri, muli kuti ayenera kukhala chiyambi mphindi pafupipafupi pamapindikira, ndipo winayo ndi kuchoka mphindi pafupipafupi pamapindikira, pamapindikira izi zikuimira tanthauzo la: yambani galimoto pa chiyambi pafupipafupi, pambuyo akamaliza chiyambi akhoza kuwonjezera katundu, koma galimoto sadzataya sitepe boma; kapena Yambitsani injini pafupipafupi poyambira, ngati mukunyamula nthawi zonse, mutha kuwonjezera liwiro lothamanga, koma injiniyo sitaya gawo.
Zomwe zili pamwambazi ndikuyambitsa stepper motor kunja kwa sitepe ndi overshoot.
Ngati mukufuna kulankhulana ndi kugwirizana nafe, chonde omasuka kulankhula nafe!
Timayanjana kwambiri ndi makasitomala athu, kumvetsera zosowa zawo ndikuchita zomwe akufuna. Timakhulupirira kuti mgwirizano wopambana-wopambana umachokera ku khalidwe lazogulitsa ndi ntchito yamakasitomala.
Nthawi yotumiza: Apr-03-2023