Direba Servo,wanda kuma aka fi sani da "servo controller" ko "servo amplifier", nau'in mai sarrafawa ne da ake amfani dashi don sarrafa injinan servo. Ayyukansa yayi kama da na na'ura mai sauya mitar da ke aiki akan motocin AC na yau da kullun, kuma yana cikin tsarin servo. Gabaɗaya, servo Motors ana sarrafa su ta hanyoyi uku: matsayi, gudu, da juzu'i don cimma madaidaicin matsayi na tsarin watsawa.
1. Rarraba servo Motors
An kasu kashi biyu: DC da AC servo Motors, AC servo Motors an ƙara raba su zuwa asynchronous servo motors da synchronous servo Motors. A halin yanzu, tsarin AC a hankali yana maye gurbin tsarin DC. Idan aka kwatanta da tsarin DC, AC servo Motors suna da fa'ida kamar babban aminci, kyakkyawan yanayin zafi, ƙaramin lokacin rashin ƙarfi, da ikon yin aiki a ƙarƙashin yanayin ƙarfin lantarki. Sakamakon rashin goge goge da tuƙi, tsarin uwar garken AC mai zaman kansa shi ma ya zama tsarin servo maras gogewa. Motocin da aka yi amfani da su a cikinsa injinan asynchronous maras goga ne da injunan maganadisu na dindindin.
1. DC servo Motors sun kasu kashi-kashi masu goge-goge da kuma babur goge
① Motoci marasa gogewa suna da ƙarancin farashi, tsari mai sauƙi, babban ƙarfin farawa, kewayon ƙayyadaddun ƙayyadaddun saurin gudu, sauƙin sarrafawa, da buƙatar kulawa. Koyaya, suna da sauƙin kulawa (maye gurbin gogewar carbon), suna haifar da tsangwama na lantarki, kuma suna da buƙatu don yanayin aiki. Yawancin lokaci ana amfani da su a cikin ƙayyadaddun ƙima na masana'antu da aikace-aikacen jama'a;
② Motocin da ba su da gogewa suna da ƙaramin girman, nauyi mai haske, babban fitarwa, amsa mai sauri, babban sauri, ƙaramin inertia, juzu'i mai ƙarfi da jujjuyawar santsi, hadaddun sarrafawa, hankali, hanyoyin sauye-sauye na lantarki, na iya zama murabba'in igiyar ruwa ko sine commutation, kiyayewa kyauta, ingantaccen da makamashi-ceton, low electromagnetic radiation, low zazzabi tashi, dogon sabis rayuwa, kuma sun dace da daban-daban yanayi.
2. Halaye na daban-daban na servo Motors
1. Abũbuwan amfãni da rashin amfani na DC servo Motors
Abũbuwan amfãni: Madaidaicin sarrafa saurin gudu, halayen saurin juyi mai ƙarfi, ƙa'idar sarrafawa mai sauƙi, amfani mai dacewa, da farashi mai araha.
Hasara: sauye-sauyen gogewa, ƙayyadaddun saurin gudu, ƙarin juriya, ƙirƙira abubuwan lalacewa (ba su dace da mahalli marasa ƙura da fashewa ba)
2. Fa'idodi da rashin amfaniAC servo Motors
Abũbuwan amfãni: Kyakkyawan halayen sarrafa saurin gudu, ana iya samun iko mai santsi a duk faɗin saurin gudu, kusan babu oscillation, babban inganci fiye da 90%, ƙarancin zafi mai ƙarfi, iko mai sauri, iko mai mahimmanci (dangane da daidaiton encoder), zai iya cimma matsananciyar juzu'i a cikin yankin da aka ƙididdigewa, ƙarancin inertia, ƙaramar amo, babu goge goge, kyauta mai kulawa (wanda ya dace da yanayin da ba shi da ƙura da fashewa).
Hasara: Sarrafa yana da rikitarwa, kuma ana buƙatar daidaita sigogin direba a kan rukunin yanar gizon don tantance sigogin PID, yana buƙatar ƙarin wayoyi.
A halin yanzu, na'urorin servo na yau da kullun suna amfani da na'urori masu sarrafa siginar dijital (DSP) azaman tushen sarrafawa, wanda zai iya cimma hadadden algorithms sarrafawa, digitization, sadarwar yanar gizo, da hankali. Na'urorin wuta gabaɗaya suna amfani da da'irori na tuƙi da aka ƙera tare da na'urorin wutar lantarki na fasaha (IPM) azaman ainihin. IPM tana haɗa da'irori na tuƙi a ciki kuma yana da gano kuskure da da'irori na kariya don overvoltage, overcurrent, overheating, undervoltage, da sauransu. Hakanan ana ƙara da'irar farawa mai laushi zuwa babban da'irar don rage tasirin farawa akan direba. Naúrar tuƙin wutar lantarki ta farko tana gyara shigar da wutar lantarki mai hawa uku ko ta mains ta hanyar da'irar gyara gada mai hawa uku don samun ƙarfin DC daidai. Bayan gyarawa, ana amfani da wutar lantarki mai kashi uku ko na mains don fitar da injin maganadisu na dindindin na AC servo mai hawa uku ta hanyar inverter na tushen wutar lantarki mai kashi uku na PWM don juyawa mitar. Za a iya siffanta gaba dayan tsarin naúrar tuƙi mai ƙarfi azaman tsarin AC-DC-AC. Babban da'irar topology na sashin gyarawa (AC-DC) cikakken gada ce mai da'irar gyarawa mai hawa uku maras sarrafawa.
1. Wayayan direbobi
Driver servo yafi haɗa da samar da wutar lantarki mai sarrafawa, babban wutar lantarki mai sarrafawa, samar da wutar lantarki ta servo, shigarwar mai sarrafawa CN1, mai haɗawa CN2, da haɗin CN3. Wutar lantarki mai kula da wutar lantarki shine mai samar da wutar lantarki guda ɗaya na AC, kuma ƙarfin shigar da wutar lantarki na iya zama lokaci ɗaya ko mataki uku, amma dole ne ya zama 220V. Wannan yana nufin cewa idan aka yi amfani da shigarwar matakai uku, dole ne a haɗa wutar lantarki ta mu ta hanyar transfoma. Ga direbobi masu ƙarancin ƙarfi, ana iya tuƙa shi kai tsaye a cikin lokaci ɗaya, kuma hanyar haɗin lokaci ɗaya dole ne a haɗa ta da tashoshin R da S. Ka tuna kar a haɗa kayan aikin servo motor U, V, da W zuwa babban wutar lantarki na kewaye, saboda yana iya ƙone direban. Ana amfani da tashar jiragen ruwa na CN1 don haɗa babban mai sarrafa kwamfuta, samar da shigarwa, fitarwa, shigar da fitarwa na ABZ uku, da fitarwa na analog na siginar sa ido daban-daban.
2. Encoder wiring
Daga wannan adadi na sama, za a iya ganin cewa mun yi amfani da 5 ne kawai daga cikin tashoshi tara, da suka hada da waya garkuwa daya, wutar lantarki guda biyu, da siginar sadarwa guda biyu (+-), wadanda suka yi kama da na'urar wayar mu na yau da kullun.
3. tashar sadarwa
Ana haɗa direban zuwa kwamfutoci na sama kamar PLC da HMI ta tashar CN3, kuma ana sarrafa su ta hanyarMODBUS sadarwa. Ana iya amfani da RS232 da RS485 don sadarwa.
Lokacin aikawa: Dec-15-2023
