Mfundo yopanga kutenthamota ya stepper.
1, nthawi zambiri amawona mitundu yonse ya injini, mkati mwake muli chitsulo chamkati ndi chozungulira.Kupindika kumakhala ndi kukana, mphamvu zidzabweretsa kutayika, kukula kwa kutayika kumafanana ndi sikweya ya kukana ndipo mphamvu yamagetsi, yomwe nthawi zambiri imatchedwa kutayika kwa mkuwa, ngati mphamvu yamagetsi si ya DC kapena sine wave yokhazikika, idzabweretsanso kutayika kwa harmonic; core ili ndi hysteresis eddy current effect, mu alternating magnetic field idzabweretsanso kutayika, kukula kwake ndi zinthu zake, mphamvu yamagetsi, pafupipafupi, voltage, yomwe imatchedwa kutayika kwachitsulo. Kutayika kwa mkuwa ndi kutayika kwachitsulo zidzawonekera mu mawonekedwe a kutentha, motero zimakhudza magwiridwe antchito a mota. Ma stepper motors nthawi zambiri amatsata kulondola kwa malo ndi kutulutsa kwa torque, magwiridwe antchito ndi otsika, mphamvu yamagetsi nthawi zambiri imakhala yayikulu, ndipo zigawo zapamwamba za harmonic, kuchuluka kwa kusinthana kwamagetsi kumasiyananso ndi liwiro, motero ma stepper motors nthawi zambiri amakhala ndi kutentha, ndipo vutoli ndi lalikulu kwambiri kuposa mota wamba wa AC.
2, mitundu yoyenera yamota ya stepperkutentha.
Kutentha kwa injini komwe kumaloledwa kufika pamlingo wotani, makamaka kumadalira mulingo wa kutchinjiriza kwamkati kwa injini. Kugwira ntchito kwa kutchinjiriza kwamkati pa kutentha kwambiri (madigiri 130 kapena kuposerapo) kusanawonongeke. Chifukwa chake bola ngati mkati mwake simupitirira madigiri 130, motayo sidzataya mphete, ndipo kutentha kwa pamwamba kudzakhala pansi pa madigiri 90 panthawiyi.
Choncho, kutentha kwa pamwamba pa injini ya stepper ndi madigiri 70-80 ndi kwabwinobwino. Njira yosavuta yoyezera kutentha ndi thermometer yothandiza, mutha kudziwa bwino: ndi dzanja, mutha kukhudza masekondi opitilira 1-2, osapitirira madigiri 60; ndi dzanja, mutha kukhudza madigiri pafupifupi 70-80; madontho ochepa a madzi amatuluka mwachangu, ndi madigiri opitilira 90.
3, mota ya stepperKutentha ndi kusintha kwa liwiro.
Pogwiritsa ntchito ukadaulo woyendetsa wamagetsi wokhazikika, ma stepper motors pa liwiro losasunthika komanso lotsika, magetsi azikhalabe okhazikika kuti asunge mphamvu yotulutsa mphamvu yokhazikika. Liwiro likakwera kufika pamlingo winawake, mphamvu yamkati ya injini imakwera, mphamvu yamagetsi imatsika pang'onopang'ono, ndipo mphamvu yamagetsi imatsikanso.
Chifukwa chake, kutentha komwe kumachitika chifukwa cha kutayika kwa mkuwa kumadalira liwiro. Kuthamanga kosasunthika komanso kotsika nthawi zambiri kumabweretsa kutentha kwakukulu, pomwe kuthamanga kwambiri kumabweretsa kutentha kochepa. Koma kutayika kwa chitsulo (ngakhale kuti ndi gawo laling'ono) kusintha sikofanana, ndipo kutentha konse kwa mota ndi zonse ziwiri, kotero zomwe zili pamwambapa ndi zomwe zikuchitika.
4, mphamvu ya kutentha.
Ngakhale kutentha kwa injini nthawi zambiri sikukhudza moyo wa injini, makasitomala ambiri safunika kulabadira. Koma kwenikweni kumabweretsa zotsatirapo zoipa. Monga ma coefficients osiyanasiyana a kutentha kwa ziwalo zamkati mwa injini kumabweretsa kusintha kwa kupsinjika kwa kapangidwe kake ndi kusintha pang'ono kwa mpweya wamkati, kudzakhudza momwe injini imayankhira mwachangu, kuthamanga kwambiri kudzakhala kosavuta kutaya sitepe. Chitsanzo china ndichakuti nthawi zina sizimalola kutentha kwambiri kwa injini, monga zida zamankhwala ndi zida zoyesera zolondola kwambiri, ndi zina zotero. Chifukwa chake, kutentha kwa injini kuyenera kukhala kofunikira kuti kulamuliridwe.
5, momwe mungachepetsere kutentha kwa injini.
Kuchepetsa kupanga kutentha, ndiko kuchepetsa kutayika kwa mkuwa ndi kutayika kwa chitsulo. Kuchepetsa kutayika kwa mkuwa mbali ziwiri, kuchepetsa kukana ndi mphamvu yamagetsi, zomwe zimafuna kusankha kukana pang'ono ndi mphamvu yamagetsi yoyesedwa momwe zingathere, mota ya magawo awiri, motayo ingagwiritsidwe ntchito motsatizana popanda mota yofanana. Koma izi nthawi zambiri zimatsutsana ndi zofunikira za torque ndi liwiro lalikulu. Pa mota yosankhidwa, ntchito yowongolera yokha ya theka lamagetsi ya drive ndi ntchito yopanda intaneti ziyenera kugwiritsidwa ntchito mokwanira, yoyambayo imachepetsa mphamvu yamagetsi yokha pamene mota ili pampando, ndipo yachiwiriyo imangodula mphamvu yamagetsi.
Kuphatikiza apo, kugawa magawo, chifukwa mawonekedwe amagetsi omwe alipo ali pafupi ndi sinusoidal, ma harmonics ochepa, kutentha kwa injini kudzakhala kochepa. Pali njira zochepa zochepetsera kutayika kwa chitsulo, ndipo mulingo wamagetsi umagwirizana nawo. Ngakhale mota yoyendetsedwa ndi magetsi ambiri idzabweretsa kuwonjezeka kwa makhalidwe a liwiro lalikulu, imabweretsanso kuwonjezeka kwa kupanga kutentha. Chifukwa chake tiyenera kusankha mulingo woyenera wa magetsi oyendetsa, poganizira liwiro lalikulu, kusalala ndi kutentha, phokoso ndi zizindikiro zina.
Njira zowongolera zoyendetsera mofulumira komanso kuchepetsa mphamvu ya ma stepper motors.
Popeza ma stepper motors akugwiritsidwa ntchito kwambiri, kafukufuku wa stepper motor control akuwonjezekanso, poyambira kapena pothamanga ngati stepper pulse ikusintha mofulumira kwambiri, rotor chifukwa cha inertia komanso kusatsatira chizindikiro chamagetsi kusintha, zomwe zimapangitsa kuti kutsekeka kapena kutayika kwa sitepe poyimitsa kapena kutsika kwa liwiro pazifukwa zomwezo kungapangitse kuti pakhale kupitirira malire. Pofuna kupewa kutsekeka, kutayika kwa sitepe ndi kupitirira malire, kuwongolera pafupipafupi yogwirira ntchito, stepper motor imakweza liwiro lowongolera.
Liwiro la mota yoyendera limadalira kuchuluka kwa kugunda kwa mtima, kuchuluka kwa mano ozungulira komanso kuchuluka kwa ma beats. Liwiro lake la angular limagwirizana ndi kuchuluka kwa kugunda kwa mtima ndipo limagwirizanitsidwa ndi nthawi ya kugunda kwa mtima. Chifukwa chake, ngati kuchuluka kwa mano ozungulira ndi kuchuluka kwa ma beats othamanga kuli kotsimikizika, liwiro lomwe mukufuna lingapezeke powongolera kuchuluka kwa kugunda kwa mtima. Popeza mota yoyendera imayatsidwa ndi torque yake yolumikizana, kuchuluka koyambira sikokwera kwambiri kuti musataye sitepe. Makamaka pamene mphamvu ikuwonjezeka, kukula kwa rotator kumawonjezeka, inertia imawonjezeka, ndipo kuchuluka koyambira ndi kuchuluka kothamanga kwakukulu kumatha kusiyana ndi nthawi khumi.
Makhalidwe a pafupipafupi oyambira a mota ya stepper kuti injini ya stepper iyambe sangafikire mwachindunji pafupipafupi yogwirira ntchito, koma kuti ikhale ndi njira yoyambira, ndiko kuti, kuchokera pa liwiro lotsika pang'onopang'ono ikwere mpaka liwiro logwirira ntchito. Imani pamene pafupipafupi yogwirira ntchito singachepe nthawi yomweyo kufika pa zero, koma kuti ikhale ndi kuchepetsa pang'onopang'ono liwiro mpaka pa zero.
Mphamvu yotulutsa ya mota ya stepper imachepa ndi kukwera kwa ma pulse frequency, ma frequency oyambira akakwera, mphamvu yoyambira ikachepa, mphamvu yoyendetsa katundu imachepa, kuyamba kumabweretsa kutayika kwa sitepe, ndipo poyimitsa kudzachitika pamene overshoot ipitirira. Kuti mota ya stepper ifike mwachangu pa liwiro lofunikira komanso kuti isataye sitepe kapena overshoot, chofunikira ndikupangitsa kuti njira yofulumira ifike, mphamvu yofulumira ikufunika kuti igwiritse ntchito mokwanira mphamvu yoperekedwa ndi mota ya stepper pa frequency iliyonse yogwira ntchito, komanso kuti isapitirire torque iyi. Chifukwa chake, ntchito ya mota ya stepper nthawi zambiri imayenera kudutsa mu kuthamanga, liwiro lofanana, kuchepetsa mphamvu magawo atatu, nthawi yofulumira ndi kuchepetsa mphamvu ifupi momwe ingathere, nthawi yothamanga nthawi zonse momwe ingathere. Makamaka pantchito yomwe imafuna kuyankha mwachangu, kuyambira poyambira mpaka kumapeto kwa nthawi yothamanga yomwe imafunika kukhala yochepa kwambiri, yomwe iyenera kufunikira kuthamanga, njira yochepetsera mphamvu ndiyo yochepa kwambiri, pomwe liwiro lapamwamba kwambiri pa liwiro lokhazikika.
Asayansi ndi akatswiri aukadaulo kunyumba ndi kunja achita kafukufuku wambiri pa ukadaulo wowongolera liwiro la ma stepper motors, ndipo akhazikitsa mitundu yosiyanasiyana ya masamu owongolera kuthamanga ndi kutsika kwa liwiro, monga chitsanzo cha exponential, chitsanzo cha linear, ndi zina zotero, ndipo potengera kapangidwe kameneka ndi chitukuko cha ma circuits osiyanasiyana owongolera kuti akonze mawonekedwe a mayendedwe a ma stepper motors, kuti alimbikitse kugwiritsa ntchito ma stepper motors, kuthamangitsa ndi kutsika kwa liwiro kumaganizira mawonekedwe a nthawi ndi nthawi a ma stepper motors, zonse ziwiri kuti zitsimikizire kuti stepper motor ikuyenda popanda kutaya sitepe, komanso kupereka mawonekedwe athunthu a injini, kufupikitsa nthawi ya liwiro lokweza, koma chifukwa cha kusintha kwa katundu wa injini, n'zovuta kukwaniritsa pomwe kuthamangitsa ndi kutsika kwa liwiro kumaganizira kokha injini yomwe ili mumtundu wa mphamvu ya angular velocity ndi pulse molingana ndi ubalewu, osati chifukwa cha kusinthasintha kwa magetsi operekera, malo osungira katundu ndi makhalidwe a kusintha, njira yofulumizitsa iyi yofulumizitsa liwiro ndi yosasintha, vuto lake ndilakuti siliganizira mokwanira mphamvu yotulutsa ya stepper motor. Ndi makhalidwe a kusintha kwa liwiro, stepper motor pa liwiro lalikulu idzachitika molakwika.
Iyi ndi njira yoyambira yowunikira mfundo yotenthetsera ndi ukadaulo wowongolera kuthamanga/kuchepetsa mphamvu ya ma stepper motors.
Ngati mukufuna kulankhulana ndi kugwirizana nafe, chonde musazengereze kulankhula nafe!
Timagwirizana kwambiri ndi makasitomala athu, kumvetsera zosowa zawo ndikuchita zomwe akufuna. Timakhulupirira kuti mgwirizano pakati pa onse umadalira khalidwe la malonda ndi utumiki kwa makasitomala.
Nthawi yotumizira: Epulo-27-2023