Gawo lolowera pakati pa kampopi wapakati pa waya, kapena pakati pa mawaya awiri (popanda pompopi wapakati).
Mozungulira ngodya ya injini yopanda katundu, pomwe magawo awiri oyandikana ali okondwa
Mtengo wastepper motorkuyenda mosalekeza.
Torque yayikulu yomwe shaft imatha kupirira popanda kusinthasintha kosalekeza, pomwe mawaya otsogolera amachotsedwa.
The pazipita malo amodzi makokedwe kuti kutsinde astepper motaokondwa ndi oveteredwa panopa akhoza kupirira popanda kasinthasintha mosalekeza.
The pazipita kugunda mitengo kuti osangalala stepper galimoto ndi katundu wina akhoza kuyamba ndipo palibe desynchronizing.
Kuthamanga kwamphamvu kwambiri komwe motor stepper yosangalatsa yoyendetsa katundu wina imatha kufikira ndipo osasiya kusinthasintha.
Ma torque okwera kwambiri omwe mota ya stepper yosangalatsa imatha kuyambitsa pamlingo wina wa kugunda ndipo osasiya kusinthika.
Ma torque okwera kwambiri omwe motor stepper imayendetsedwa pamikhalidwe yovomerezeka komanso kugunda kwina kwina kungathe kupirira ndikusunga kusasinthika.
Kuthamanga kwamphamvu komwe motor stepper yokhala ndi katundu wovomerezeka imatha kuyambitsa, kuyimitsa kapena kutsika, ndipo osasiya kusinthika.
Magetsi okwera kwambiri amayezedwa pagawo, ponyamula shaft ya injini pa liwiro lokhazikika la 1000 RPM.
Kusiyana pakati pa zongoyerekeza ndi zenizeni zophatikizika (maudindo).
Kusiyana pakati pa chiphunzitso ndi ngodya yeniyeni ya sitepe imodzi.
Kusiyana pakati pa maimidwe a CW ndi CCW.
Chopper nthawi zonse pagalimoto yoyendetsa ndi mtundu wamagalimoto omwe ali ndi magwiridwe antchito abwino komanso ogwiritsidwa ntchito kwambiri pakadali pano. Lingaliro lofunikira ndiloti mlingo wamakono wa mapiritsi a conductive gawo umasungidwa mosasamala kanthu kutistepper motaili yokhoma kapena ikuyenda motsika kapena pafupipafupi. BellowFigure ndi chithunzi chojambula cha chopper chokhazikika pakali pano pagalimoto, momwe gawo limodzi lokha loyendetsa likuwonetsedwa, ndipo gawo lina ndilofanana. Kutsekedwa kwa gawoli kumayendetsedwa limodzi ndi chubu chosinthira VT1 ndi VT2. Emitter ya VT2 imalumikizidwa ndi kukana kwachitsanzo R, ndipo kutsika kwamphamvu pa kukaniza kumayenderana ndi I yapano yakumapeto kwa gawo.
Pamene control pulse UI ili pamagetsi apamwamba, machubu onse a VT1 ndi VT2 amayatsidwa, ndipo magetsi a dc amapereka mafunde. Chifukwa cha mphamvu ya inductance ya mapindikidwe, voteji pa sampling resistance R imawonjezeka pang'onopang'ono. Pamene mtengo wa voteji anapatsidwa Ua ndi kuposa, wofananira linanena bungwe otsika mlingo, kuti chipata komanso linanena bungwe otsika mlingo. VT1 yadulidwa ndipo magetsi a dc achotsedwa. Pamene voteji pa kukana zitsanzo R ndi zosakwana voteji anapatsidwa Ua, comparator linanena bungwe mkulu mlingo, ndi chipata komanso linanena bungwe mkulu mlingo, VT1 anazimitsa kachiwiri, ndi dc magetsi akuyamba kupereka mphamvu kwa mapiringidzo kachiwiri. mobwerezabwereza, panopa mu gawo mapiringidzo okhazikika pa mtengo anatsimikiza ndi anapatsidwa voteji Ua.
Mukamagwiritsa ntchito voteji yokhazikika, voteji yamagetsi imafanana ndi voteji yamoto ndipo imakhala yosasinthasintha. Mayendetsedwe amagetsi anthawi zonse ndi osavuta komanso otsika mtengo kuposa ma drive apano, omwe amawongolera ma voliyumu kuti awonetsetse kuti injini yamagetsi yokhazikika imaperekedwa. Pakuyendetsa voteji nthawi zonse, kukana kwa dera loyendetsa galimoto kudzachepetsa kuchuluka kwaposachedwa, ndipo inductance yagalimoto imachepetsa liwiro lomwe likukwera. Pa liwiro lotsika, kukana ndiye chinthu cholepheretsa m'badwo wapano (ndi torque). Galimoto ili ndi torque yabwino komanso yowongolera komanso imayenda bwino. Komabe, pamene liwiro la galimoto likuwonjezeka, inductance ndi nthawi yokwera panopa imayamba kulepheretsa kuti panopa isafike pamtengo wake. Kuphatikiza apo, kuthamanga kwagalimoto kumachulukira, EMF yakumbuyo imachulukiranso, zomwe zikutanthauza kuti magetsi ochulukirapo amangogwiritsidwa ntchito kuthana ndi voliyumu yakumbuyo ya EMF. Chifukwa chake, choyipa chachikulu chamagetsi okhazikika ndikutsika mwachangu kwa torque yomwe imapangidwa pa liwiro lotsika kwambiri la stepper motor.
Kuyendetsa galimoto ya bipolar stepper motor ikuwonetsedwa mu Chithunzi 2. Imagwiritsa ntchito ma transistors asanu ndi atatu kuyendetsa magawo awiri a magawo. Bipolar drive dera imatha kuyendetsa mawaya anayi kapena masitepe asanu ndi limodzi nthawi imodzi. Ngakhale mawaya anayi amagalimoto amatha kugwiritsa ntchito mayendedwe a bipolar drive, amatha kuchepetsa kwambiri mtengo wopangira zinthu zambiri. Chiwerengero cha ma transistors mu bipolar stepping motor drive circuit ndi kawiri kuposa cha unipolar drive circuit. Ma transistors anayi otsika nthawi zambiri amayendetsedwa mwachindunji ndi microcontroller, ndipo transistor yapamwamba imafuna mtengo wapamwamba woyendetsa galimoto. Transistor ya bipolar drive circuit imangofunika kunyamula voteji yamagalimoto, chifukwa chake sifunika kuzungulira ngati unipolar drive circuit.
Unipolar ndi bipolar ndizomwe zimagwiritsidwa ntchito kwambiri pamagalimoto omwe ma stepping motors amagwiritsidwa ntchito. Dongosolo loyendetsa polar limodzi limagwiritsa ntchito ma transistors anayi kuyendetsa magawo awiri a mota yolowera, ndipo mawonekedwe omangira ma stator amaphatikiza ma coil awiri okhala ndi ma tapi apakatikati (pampopi wapakatikati wa AC coil O, BD koyilo) Wapampopi wapakatikati ndi m), ndipo mota yonseyo ili ndi mizere isanu ndi umodzi yolumikizira kunja. Mbali ya AC silingathe kupatsa mphamvu (kutha kwa BD), apo ayi maginito otulutsa maginito opangidwa ndi ma coils awiri pamtengo wa maginito amathetsa wina ndi mnzake, kugwiritsa ntchito mkuwa kokha kumapangidwa. Chifukwa kwenikweni ndi magawo awiri okha (AC windings ndi gawo limodzi, ndi BD mapiringidzo ndi gawo limodzi), mawu olondola ayenera kukhala awiri gawo sikisi waya (ndithudi, tsopano pali mizere isanu, chikugwirizana ndi mizere iwiri ya anthu) Masitepe galimoto.
Gawo limodzi, mphamvu-pa mapiringidzo gawo limodzi lokha, sequentially kusintha gawo panopa kutulutsa kasinthasintha sitepe ngodya (osiyana makina magetsi, 18 madigiri 15 7.5 5, wosanganiza galimoto 1.8 madigiri ndi 0,9 madigiri, zotsatirazi 1.8 madigiri akutchulidwa njira yosangalatsa, ndi kuyankha kwa kasinthasintha wafupipafupi kwambiri, kugwedezeka ndi kugwedezeka kwakukulu. zosavuta kupanga zachikale.
Awiri gawo malemeredwe: awiri gawo munthawi yomweyo kufalitsidwa panopa, amagwiritsanso ntchito njira kusintha mafunde gawo nayenso, gawo lachiwiri mwamphamvu sitepe ngodya ndi madigiri 1.8, okwana panopa a magulu awiri ndi 2 nthawi, ndi apamwamba kwambiri kuyambira pafupipafupi kumawonjezeka, akhoza analandira Kuthamanga kwambiri, zina, kwambiri ntchito.
Chisangalalo cha 1-2: Iyi ndi njira yosinthira motsatira gawo-mu chisangalalo, chisangalalo cha magawo awiri, kuyambira pano, awiriwo amasinthasintha nthawi zonse, kotero kuti mbali yake ndi madigiri a 0,9, chisangalalo chapano ndi chachikulu, komanso kuchita bwino kwambiri. Kuchuluka koyambira pafupipafupi kumakhalanso kwapamwamba. Imadziwika kuti theka-way excitation drive
Nthawi yotumiza: Jul-06-2023