Motar Stepper na'urar motsi ce mai hankali, wacce ke da muhimmiyar haɗi tare da fasahar sarrafa dijital ta zamani.A cikin tsarin kula da dijital na cikin gida na yanzu, ana amfani da injin stepper sosai.Tare da fitowar duk-dijital AC servo tsarin, AC servo Motors ana ƙara amfani da dijital kula da tsarin.Domin dacewa da yanayin ci gaba na sarrafa dijital, injinan stepper ko duk-dijital AC servo Motors ana amfani da su azaman manyan injina a cikin tsarin sarrafa motsi.Ko da yake duka biyu suna kama da yanayin sarrafawa (jirgin bugun jini da siginar jagora), akwai manyan bambance-bambance a cikin aiki da lokutan aikace-aikace.Yanzu kwatanta aikin biyun.
Daidaiton sarrafawa ya bambanta
The mataki kwana na biyu-lokaci matasan stepper Motors ne kullum 3.6 digiri da kuma 1.8 digiri, da kuma mataki kwana na biyar-lokaci matasan stepper Motors ne kullum 0.72 digiri da 0.36 digiri.Har ila yau, akwai wasu manyan injunan stepper masu aiki tare da ƙananan kusurwoyin mataki.Misali, injin hawa wanda Kamfanin Stone ya samar don kayan aikin na'urar waya mai saurin tafiya yana da kusurwar mataki na digiri 0.09; Motar matattakala mai hawa uku ta BERGER LAHR tana da kusurwar mataki na digiri 0.09. An saita canjin DIP zuwa digiri 1.8, digiri 0.9, digiri 0.72, digiri 0.36, digiri 0.18, digiri 0.09, digiri 0.072, digiri 0.036, wanda ya dace da kusurwar mataki na matakai biyu da na injinan matakan matakai biyar.
Ana ba da garantin sarrafa daidaiton injin servo na AC ta hanyar jujjuyawar rikodin a ƙarshen ƙarshen mashin ɗin.Don motar da ke da madaidaicin madaidaicin layi na 2500, daidaitaccen bugun bugun jini shine digiri 360/10000 = 0.036 digiri saboda fasahar mitar sau hudu a cikin direba.Ga motar da ke da 17-bit encoder, duk lokacin da direba ya karɓi bugun jini 217=131072, motar tana yin juyi guda ɗaya, wato bugun bugunsa daidai yake 360 digiri/131072=9.89 seconds.Yana da 1/655 na bugun jini daidai da motar stepper tare da kusurwar mataki na digiri 1.8.
Ƙananan halayen mitar sun bambanta:
Motocin Stepper suna da saurin jujjuyawar mitoci a ƙananan gudu.Mitar girgiza yana da alaƙa da yanayin kaya da aikin direba. An yi imani da cewa mitar girgiza ita ce rabin mitar da ba ta da kaya.Wannan ƙananan mitar girgiza al'amarin da aka ƙaddara ta hanyar ka'idar aiki na motar motsa jiki ba shi da kyau ga aikin yau da kullum na na'ura.Lokacin da motar stepper ke aiki a cikin ƙananan gudu, ya kamata a yi amfani da fasahar damping gabaɗaya don shawo kan yanayin girgizar ƙasa mara ƙarfi, kamar ƙara damper a cikin motar, ko amfani da fasahar yanki akan direba, da sauransu.
Motar AC servo tana aiki sosai kuma baya girgiza koda da ƙananan gudu.Tsarin AC servo yana da aikin dakatar da resonance, wanda zai iya rufe rashin ƙarfi na na'ura, kuma tsarin yana da aikin nazarin mita (FFT) a cikin tsarin, wanda zai iya gano ma'anar resonance na na'ura da sauƙaƙe daidaita tsarin.
Halayen mitar lokaci-lokaci sun bambanta:
Matsakaicin fitarwa na stepper motor yana raguwa tare da haɓakar saurin, kuma zai ragu da ƙarfi a mafi girman gudu, don haka matsakaicin saurin aiki shine gabaɗaya 300-600RPM.Motar AC servo tana da jujjuyawar wutar lantarki akai-akai, wato tana iya fitar da madaidaicin magudanar ruwa a cikin saurin da aka ƙididdige shi (gaba ɗaya 2000RPM ko 3000RPM), kuma yana da ƙarfin fitarwa akai-akai sama da ƙimar ƙimar.
Ƙarfin lodi ya bambanta:
Motocin Stepper gabaɗaya ba su da damar yin lodi.Motar AC servo tana da ƙarfin juyi mai ƙarfi.Ɗauki tsarin Panasonic AC servo a matsayin misali, yana da saurin wuce gona da iri da karfin juriya.Matsakaicin ƙarfinsa shine sau uku na ƙimar da aka ƙididdigewa, wanda za'a iya amfani dashi don shawo kan lokacin inertia na nauyin inertial a lokacin farawa.Saboda motar stepper ba ta da irin wannan nauyin nauyin nauyi, don shawo kan wannan lokacin rashin aiki lokacin da zabar samfurin, sau da yawa ya zama dole don zaɓar motar tare da karfin juyi mafi girma, kuma injin baya buƙatar irin wannan babban karfin a lokacin. aiki na al'ada, don haka karfin juyi ya bayyana. Lamarin na sharar gida.
Ayyukan gudu ya bambanta:
Sarrafa motar tako shine iko mai buɗewa. Idan mitar farawa ya yi yawa ko kuma nauyin ya yi girma, asarar mataki ko tsayawa zai iya faruwa cikin sauƙi. Lokacin da gudun ya yi yawa, overshooting zai yi sauƙi lokacin da gudun ya yi yawa. Don haka, don tabbatar da daidaiton sarrafa shi, yakamata a kula da shi yadda ya kamata. Matsalolin hawan hawan da raguwa.Tsarin tuƙi na AC servo shine sarrafa madauki. Motar na iya yin samfurin siginar martani kai tsaye na mai rikodin motsi, kuma an kafa madaidaicin matsayi na ciki da madauki na sauri. Gabaɗaya, ba za a sami asarar mataki ba ko jujjuyawar abin hawa, kuma aikin sarrafawa ya fi dogaro.
Ayyukan amsa saurin ya bambanta:
Yana ɗaukar millisecond 200-400 don motar stepper don haɓakawa daga tsayawar zuwa saurin aiki (gaba ɗaya juyi ɗari da yawa a cikin minti daya).Ayyukan gaggawa na tsarin servo na AC ya fi kyau. Ɗaukar motar CRT AC servo a matsayin misali, yana ɗaukar ƴan miliyon daƙiƙa kaɗan kawai don haɓaka daga tsaye zuwa ƙimar ƙimarsa na 3000RPM, wanda za'a iya amfani dashi a lokatai masu sarrafawa waɗanda ke buƙatar farawa da tsayawa cikin sauri.
A takaice dai, tsarin AC servo ya fi injin stepper a fannoni da yawa na aiki.Amma a wasu lokatai masu ƙarancin buƙata, ana amfani da injinan stepper a matsayin manyan injina.Sabili da haka, a cikin tsarin ƙira na tsarin sarrafawa, abubuwa daban-daban kamar buƙatun sarrafawa da farashi ya kamata a yi la'akari da su gabaɗaya, kuma ya kamata a zaɓi motar sarrafawa mai dacewa.
Motar stepper shine mai kunnawa wanda ke juyar da bugun wutar lantarki zuwa matsuguni na kusurwa.A cikin sharuddan layman: lokacin da direban stepper ya karɓi siginar bugun jini, yana motsa motar stepper don jujjuya kafaffen kusurwa (da kusurwar mataki) a inda aka saita.
Kuna iya sarrafa ƙaurawar angular ta hanyar sarrafa adadin bugun jini, don cimma manufar daidaitaccen matsayi; a lokaci guda, zaku iya sarrafa saurin gudu da haɓakar jujjuyawar motsi ta hanyar sarrafa mitar bugun jini, don cimma manufar daidaita saurin gudu.
Akwai nau'ikan injunan stepper guda uku: Magnet na dindindin (PM), reactive (VR) da matasan (HB).
Tsawon maganadisu na dindindin gabaɗaya kashi biyu ne, tare da ƙaramin ƙarfi da ƙara, kuma kusurwar matakin gabaɗaya digiri 7.5 ko digiri 15;
Matsakaicin amsawa gabaɗaya mataki ne na uku, wanda zai iya gane babban ƙarfin juzu'i, kuma kusurwar matakin gabaɗaya digiri 1.5 ne, amma hayaniya da rawar jiki suna da girma sosai.A kasashen da suka ci gaba kamar Turai da Amurka, an kawar da ita a cikin 1980s;
da matasan stepper yana nufin hade da abũbuwan amfãni daga cikin m maganadisu irin da amsawa irin.An kasu kashi biyu da mataki biyar: kusurwar mataki na mataki biyu gabaɗaya digiri ne 1.8 kuma kusurwar mataki mai mataki biyar gabaɗaya digiri 0.72.Irin wannan motar motsa jiki ita ce aka fi amfani da ita.
Lokacin aikawa: Maris 25-2023