Kodi ma stepper motors amachepa bwanji?

Monga actuator,mota ya stepperndi chimodzi mwa zinthu zofunika kwambiri za mechatronics, zomwe zimagwiritsidwa ntchito kwambiri m'njira zosiyanasiyana zowongolera ma automation. Ndi chitukuko cha ma microelectronics ndi ukadaulo wopanga molondola, kufunikira kwa ma stepper motors kukuwonjezeka tsiku ndi tsiku, ndipo ma stepper motors ndi ma gear transmission mechanism akuphatikizidwa kukhala bokosi la gear lochepetsera, komanso m'magawo ambiri ogwiritsira ntchito kuti muwone, lero ndi ochepa ndipo aliyense pamodzi kuti amvetsetse mtundu uwu wa ma gear transmission mechanism.

 

Kodi ma stepper motors amachepa bwanji?

Injini ya stepper imagwiritsidwa ntchito kwambiri komanso imagwiritsidwa ntchito kwambiri poyendetsa, nthawi zambiri imagwiritsidwa ntchito ndi zida zochepetsera mphamvu kuti ikwaniritse zotsatira zabwino zotumizira; ndipo injini ya stepper imagwiritsidwa ntchito kwambiri ndi zida ndi njira zochepetsera mphamvu, monga bokosi la gear lochepetsera mphamvu, encoder, controller, pulse signal, ndi zina zotero.

 

Kuchepa kwa chizindikiro cha kugunda kwa mtima:Liwiro lozungulira injini ya stepper, limachokera pa kusintha kwa chizindikiro cha pulse cholowera kuti chisinthe. Mwachidule, perekani dalaivala pulse, injini ya stepper imazungulira ngodya ya sitepe (kugawa kwa ngodya ya sitepe yogawa magawo). Mwachizolowezi, ngati chizindikiro cha pulse chisintha mofulumira kwambiri, injini ya stepper chifukwa cha mphamvu yamkati ya mphamvu yamagetsi yobwerera, yankho la maginito pakati pa rotor ndi stator silidzatsatira kusintha kwa chizindikiro chamagetsi, zidzatsogolera ku kutsekeka ndi kutayika kwa masitepe.

 

Kuchepetsa mphamvu ya bokosi la gear:Mota ya stepper yokhala ndi gearbox yochepetsera yomwe imagwiritsidwa ntchito pamodzi, mota ya stepper yotulutsa liwiro lalikulu, liwiro lotsika la torque, yolumikizidwa ku gearbox yochepetsera, gearbox yochepetsera mkati yokhala ndi ma meshing gear yopangidwa ndi reduction ratio, liwiro lotulutsa la stepper motor lidzachepetsedwa, ndikuwonjezera torque yotumizira kuti ikwaniritse zotsatira zabwino kwambiri zotumizira; zotsatira zochepetsera zimadalira chiŵerengero chochepetsera cha gearbox, chiŵerengero chochepetsera chachikulu, liwiro lotulutsa limakhala laling'ono, ndipo mosemphanitsa. Ndipo mosemphanitsa.

 

Liwiro lolamulira la curve exponential:Mzere wozungulira wa exponential, mu mapulogalamu a mapulogalamu, nthawi yowerengedwa yoyamba yosungidwa mu kukumbukira kwa kompyuta, imasonyeza kusankha pamene ikugwira ntchito. Kawirikawiri, kutha kwa kuthamanga kwa mota ya stepper ndi nthawi yochepetsera liwiro ndi 300ms kapena kuposerapo. Ngati mugwiritsa ntchito nthawi yochepa kwambiri yofulumira komanso yochepetsera liwiro, kwa ma mota ambiri a stepper, zidzakhala zovuta kukwaniritsa kuzungulira kwamphamvu kwa ma mota a stepper.

 

Kuchepetsa mphamvu ya encoder control:Kuwongolera kwa PID monga njira yosavuta komanso yothandiza yowongolera, mu stepper motor drive kwakhala kukugwiritsidwa ntchito kwambiri. Kutengera mtengo woperekedwa r (t) ndi mtengo weniweni wotulutsa c (t) kuti apange kupotoka kowongolera e (t), kupotoka kwa proportional, integral ndi differential kudzera mu linear kuphatikiza kwa kuchuluka kowongolera, control object control. Pepalali limagwiritsa ntchito integrated position sensor mu two-phase hybrid stepper motor ndipo limapanga automatic administrator PI speed controller kutengera position detector ndi vector control, zomwe zimapereka makhalidwe okhutiritsa osinthika pansi pa mikhalidwe yosinthika yogwirira ntchito. Kutengera chitsanzo cha masamu cha stepper motor, PID control system ya stepper motor idapangidwa ndipo PID control algorithm imagwiritsidwa ntchito kupeza control quantity kuti ilamulire mayendedwe a motor kupita ku malo omwe atchulidwa. Pomaliza, zimatsimikiziridwa ndi simulation kuti control ili ndi makhalidwe abwino oyankha. PID controller ili ndi ubwino wa kapangidwe kosavuta, kulimba kwambiri komanso kudalirika kwambiri, koma silingathe kuthana bwino ndi chidziwitso chosatsimikizika mu system.

 

Kodi galimoto ya stepper ingagwirizane ndi chochepetsera chiti? Mu phukusi losankha galimoto ya stepper ndi gearbox muyenera kulabadira zinthu zimenezo, ndipo ndi mtundu wanji wa gearbox womwe ungasankhidwe kuti ugwiritsidwe ntchito limodzi?

 

1. Chifukwa cha injini ya stepper yokhala ndi reducer

 

Stepper motor switch imasintha pafupipafupi ya stator phase current, monga kusintha pulse yolowera ya stepper motor drive circuit, kotero kuti imayenda mofulumira kwambiri. Stepper motor yothamanga kwambiri ikadikira lamulo lolowera, rotor imayima, mu stepping yothamanga kwambiri, kusinthasintha kwa liwiro kudzakhala kwakukulu kwambiri, panthawiyi, monga kusintha kupita ku ntchito yothamanga kwambiri, ikhoza kuthetsa vuto la kusinthasintha kwa liwiro, koma torque sidzakhala yokwanira. Ndiye kuti, kusinthasintha kwa torque kudzakhala kochepa, ndipo kuthamanga kwakukulu kudzakhala kosakwanira, kufunikira kugwiritsa ntchito chochepetsera.

 

2. Nthawi zambiri stepper motor yokhala ndi reducer

 

Reducer ndi mtundu wa gear drive, worm drive, gear - worm drive, yomwe ili mkati mwa casing yolimba, nthawi zambiri imagwiritsidwa ntchito ngati chochepetsera pakati pa prime mover ndi makina ogwirira ntchito, pakati pa prime mover ndi makina ogwirira ntchito kapena actuator kuti igwirizane ndi liwiro ndi torque transmission; reducer ili ndi mitundu yosiyanasiyana, malinga ndi mtundu wa transmission ingagawidwe mu gear reducer, worm gear reducer ndi planetary gear reducer. Malinga ndi kuchuluka kwa magawo otumizira, ingagawidwe mu single-step ndi multi-step reducer; malinga ndi mawonekedwe a gear ingagawidwe mu cylindrical gear reducer, bevel gear reducer ndi bevel-cylindrical gear reducer; malinga ndi mawonekedwe a transmission, ingagawidwe mu unfolded reducer, shunt reducer ndi coaxial reducer. Stepper motor assembly reducers ndi planetary reducer, worm gear reducer, parallel gear reducer, filament gear reducer.

 

 

Nanga bwanji za kulondola kwa stepper motor planetary reducer?

 

 

Kulondola kwa chochepetsera magetsi kumatchedwanso kuti return clearance. Pamene mapeto otuluka akhazikika ndipo mapeto olowera azunguliridwa mozungulira wotchi komanso motsutsana ndi wotchi kuti apange torque yoyesedwa + -2% torque kumapeto otuluka, pamakhala kusuntha pang'ono kwa angular kumapeto olowera a chochepetsera magetsi, ndipo kusuntha uku kwa angular ndi return clearance. Unit ndi "arc minutes", mwachitsanzo gawo limodzi mwa makumi asanu ndi limodzi a digiri. Ma frequency obweza magetsi nthawi zonse amatanthauza mbali yotulutsa ya gearbox. Stepper motor planetary reducer ili ndi kulimba kwakukulu, kulondola kwambiri (gawo limodzi lingathe kuchitika mkati mwa mphindi imodzi), mphamvu yayikulu yotumizira magetsi (gawo limodzi mu 97%-98%), chiŵerengero chapamwamba cha torque/volume, yopanda kukonza, ndi zina zotero.

 

Kulondola kwa transmission ya stepper motor sikusinthika, ngodya yothamangira ya stepper motor imatsimikiziridwa kwathunthu ndi kutalika kwa sitepe ndi chiwerengero cha pulses, ndipo chiwerengero cha pulses chikhoza kukhala chiwerengero chonse, kuchuluka kwa digito si lingaliro la kulondola, sitepe imodzi ndi sitepe imodzi, masitepe awiri ndi masitepe awiri. Kulondola kwamakono komwe kungakonzedwe ndi kulondola kwa return clearance ya planetary gearbox.

 

1. Njira yosinthira kulondola kwa spindle:Kusintha kwa kulondola kwa spindle ya planetary gearbox, ngati cholakwika cha machining cha spindle yokha chikugwirizana ndi zofunikira, ndiye kuti kulondola kwa spindle yochepetsera nthawi zambiri kumatsimikiziridwa ndi bearing. Chinsinsi chosinthira kulondola kwa spindle ndikusinthira bearing clearance. Kusunga bearing clearance yoyenera ndikofunikira kwambiri pakugwira ntchito kwa zigawo za spindle ndi moyo wa bearing. Pa bearing yozungulira, pakakhala clearance yayikulu, sikuti imangopangitsa kuti katundu azingoyang'ana kwambiri thupi lozungulira molunjika ku mphamvu, komanso imapanganso kupsinjika kwakukulu mu bearing inner and outer ring raceway contact, kufupikitsa moyo wa bearing, komanso kupangitsa spindle centerline drift, zomwe zimapangitsa kuti magawo a spindle agwedezeke mosavuta. Chifukwa chake, kusintha kwa bearing yozungulira kuyenera kuyikidwa kale, Kuti pakhale kusokoneza kwina mkati mwa bearing, kuti pakhale kusintha kwina kotanuka pakati pa thupi lozungulira ndi raceway yamkati ndi yakunja, motero kukonza kuuma kwa bearing.

2. Njira yosinthira kusiyana:Bokosi la gearbox la mapulaneti likamayenda limapanga kukangana, zomwe zimapangitsa kusintha kwa kukula, mawonekedwe ndi mawonekedwe a pamwamba pakati pa ziwalozo, ndi kuwonongeka, kotero kuti kusiyana pakati pa ziwalozo ndi kuwonjezeka, tifunika kusintha moyenera kuti tiwonetsetse kulondola kwa kuyenda pakati pa ziwalozo.

 

3. Njira yobwezera zolakwika:Zigawo zokha zimalakwitsa kudzera mu msonkhano woyenera, kotero kuti chodabwitsa cha mgwirizano wogwirizana panthawi yopuma, kuti zitsimikizire kulondola kwa njira yoyendetsera zida.

 

1. Njira yonse yolipirira:Chida chomwe chayikidwa ndi chochepetsera chokha kuti chigwire ntchito chasamutsidwa ndi kusintha koyenera kwa tebulo logwirira ntchito kuti zichotse zotsatira zonse za kulondola kwa zolakwikazo.