Gabatarwa ga na'urar laser galvanometer

Na'urar daukar hoton Laser, wacce kuma ake kira laser galvanometer, ta ƙunshi kan na'urar daukar hoton XY, amplifier drive na lantarki da kuma ruwan tabarau na gani. Siginar da mai kula da kwamfuta ke bayarwa tana tura kan na'urar daukar hoton haske ta cikin da'irar amplifier mai tuƙi, ta haka tana sarrafa karkacewar hasken laser a cikin jirgin XY. A taƙaice dai, galvanometer galvanometer ne mai daukar hoton scanning da ake amfani da shi a masana'antar laser. Kalmarsa ta ƙwararru ana kiranta da tsarin duba galvanometer mai sauri. Ana iya kiran abin da ake kira galvanometer ammeter. Manufar ƙirarsa ta bi tsarin ƙira na ammeter gaba ɗaya. Ruwan tabarau yana maye gurbin allura, kuma ana maye gurbin siginar binciken da siginar -5V-5V ko -10V-+10V DC mai sarrafawa ta kwamfuta, don kammala aikin da aka riga aka tsara. Kamar tsarin duba madubi mai juyawa, wannan tsarin sarrafawa na yau da kullun yana amfani da madubai biyu masu ja da baya. Bambancin shine cewa motar stepper da ke tuƙa wannan saitin ruwan tabarau an maye gurbinta da injin servo. A cikin wannan tsarin sarrafawa, ana amfani da firikwensin matsayi. Tsarin ƙira da madaurin amsawa mara kyau yana ƙara tabbatar da daidaiton tsarin, kuma saurin dubawa da daidaiton matsayi na tsarin gaba ɗaya sun kai sabon mataki. Kan alamar scanning galvanometer galibi ya ƙunshi madubin scanning XY, ruwan tabarau na filin, galvanometer da software na alamar kwamfuta. Zaɓi abubuwan gani masu dacewa bisa ga tsayin laser daban-daban. Zaɓuɓɓukan da suka shafi sun haɗa da faɗaɗa hasken laser, lasers, da sauransu. A cikin tsarin nunin laser, yanayin raƙuman na'urar scanning na gani shine vector scan, kuma saurin scanning na tsarin yana ƙayyade daidaiton tsarin laser. A cikin 'yan shekarun nan, an haɓaka na'urori masu saurin gudu, tare da saurin scanning ya kai maki 45,000 a sakan ɗaya, wanda hakan ya ba da damar nuna zane-zanen laser masu rikitarwa.

5.1 Haɗin walda na Laser galvanometer

5.1.1 Ma'anar da abun da ke cikin haɗin walda na galvanometer:

Kan haɗin gwiwar yana amfani da na'urar injiniya a matsayin dandamali mai tallafawa. Na'urar injiniya tana motsawa gaba da gaba don cimma walda na walda daban-daban na hanya. Daidaiton walda ya dogara da daidaiton mai kunna wutar lantarki, don haka akwai matsaloli kamar ƙarancin daidaito, saurin amsawa a hankali, da babban inertia. Tsarin duba galvanometer yana amfani da injin don ɗaukar ruwan tabarau don karkatarwa. Injin yana tuƙi ta wani takamaiman wutar lantarki kuma yana da fa'idodin babban daidaito, ƙaramin inertia, da amsawa da sauri. Lokacin da aka haskaka hasken haske akan ruwan tabarau na galvanometer, karkatarwar galvanometer yana canza hasken laser. Saboda haka, hasken laser zai iya duba kowace hanya a cikin filin duba ta hanyar tsarin galvanometer.

Manyan abubuwan da ke cikin tsarin duba galvanometer sune haɗin faɗuwar haske, ruwan tabarau mai mayar da hankali, galvanometer mai ɗaukar hoto na XY biyu, allon sarrafawa da tsarin software na kwamfuta mai masaukin baki. Galvanometer mai ɗaukar hoto galibi yana nufin kawunan na'urorin daukar hoto na XY guda biyu, waɗanda injinan servo masu saurin juyawa ke tuƙawa. Tsarin servo mai ɗaukar hoto na dual-axis yana tuƙa galvanometer mai ɗaukar hoto na XY dual-axis don juyawa tare da axis na X da Y bi da bi ta hanyar aika siginar umarni zuwa injinan servo na X da Y. Ta wannan hanyar, ta hanyar haɗin gwiwar motsi na gilashin madubi na XY biyu, tsarin sarrafawa zai iya canza siginar ta hanyar allon galvanometer bisa ga samfurin zane na software na mai masaukin baki bisa ga hanyar da aka saita, kuma da sauri ya matsa kan jirgin workpiece don samar da hanyar duba.

5.1.2 Rarraba gidajen haɗin walda na galvanometer:

1. Gilashin daukar hoto na gaba

Dangane da dangantakar matsayi tsakanin ruwan tabarau mai mayar da hankali da na'urar laser galvanometer, yanayin scanning na galvanometer za a iya raba shi zuwa na'urar daukar hoto ta gaba (Hoto na 1 a ƙasa) da kuma na'urar daukar hoto ta baya (Hoto na 2 a ƙasa). Saboda wanzuwar bambancin hanyar gani lokacin da aka karkatar da hasken laser zuwa wurare daban-daban (nisa tsakanin hasken ya bambanta), saman laser mai mayar da hankali yayin aikin duba yanayin mayar da hankali na baya shine saman hemispherical, kamar yadda aka nuna a hoton hagu. Hanyar duba bayan-focus an nuna ta a hoton da ke hannun dama. Ruwan tabarau na zahiri shine ruwan tabarau na F. Madubin F-plan yana da ƙira ta musamman ta gani. Ta hanyar gabatar da gyara na gani, ana iya daidaita saman hemispherical na hasken laser zuwa lebur. Duba bayan-focus ya fi dacewa da aikace-aikacen da ke buƙatar ingantaccen aiki da ƙaramin kewayon sarrafawa, kamar alamar laser, walda na laser microstructure, da sauransu.

2.Gilashin daukar hoto na baya

Yayin da yankin duba ke ƙaruwa, buɗewar ruwan tabarau na f-theta kuma yana ƙaruwa. Saboda ƙarancin fasaha da kayan aiki, ruwan tabarau na f-theta mai girma suna da tsada sosai kuma ba a karɓar wannan mafita ba. Tsarin duba galvanometer na gaba na ruwan tabarau na objective tare da robot mai axis shida mafita ce mai yuwuwa, wacce za ta iya rage dogaro da kayan aikin galvanometer, tana da babban matakin daidaiton tsarin, kuma tana da kyakkyawan jituwa. Yawancin masu haɗaka sun karɓi wannan mafita. Adopte, wanda galibi ake kira walda ta jirgin sama. Walda na sandar bus ɗin module, gami da tsaftace sanda, yana da aikace-aikacen tashi, wanda zai iya ƙara faɗin sarrafawa cikin sassauƙa da inganci.

Na'urar auna galvanometer ta 3.3D:

Ko dai na'urar daukar hoto ce ta gaba ko kuma na'urar daukar hoto ta baya, ba za a iya sarrafa hasken laser don mayar da hankali mai karfi ba. Ga yanayin na'urar daukar hoto ta gaba, lokacin da aikin da za a sarrafa ya yi karami, ruwan tabarau mai mayar da hankali yana da wani yanki na zurfin mai karfi, don haka zai iya yin na'urar daukar hoto mai karfi tare da karamin tsari. Duk da haka, lokacin da jirgin da za a duba ya yi girma, wuraren da ke kusa da gefen za su kasance ba a mayar da hankali ba kuma ba za a iya mayar da hankali kan saman kayan aikin da za a sarrafa ba saboda ya wuce zurfin mai daukar hoto ta laser. Saboda haka, lokacin da ake buƙatar hasken laser ya kasance mai kyau a kowane matsayi a kan jirgin daukar hoto kuma filin kallo ya yi girma, amfani da ruwan tabarau mai tsayin mai karfi ba zai iya biyan bukatun na'urar daukar hoto ba. Tsarin mayar da hankali mai karfi saitin tsarin gani ne wanda tsawonsa zai iya canzawa kamar yadda ake bukata. Saboda haka, masu bincike sun ba da shawarar amfani da ruwan tabarau mai daukar hankali mai karfi don rama bambancin hanyar gani, kuma su yi amfani da ruwan tabarau mai kauri (mai fadada haske) don motsawa a layi tare da axis na gani don sarrafa matsayin mai daukar hankali da cimma. Fuskar da za a sarrafa tana rama bambancin hanyar gani a wurare daban-daban. Idan aka kwatanta da galvanometer na 2D, tsarin galvanometer na 3D galibi yana ƙara "tsarin gani na Z-axis", ta yadda galvanometer na 3D zai iya canza matsayin mayar da hankali yayin aikin walda da kuma yin walda mai lanƙwasa a saman sarari, ba tare da buƙatar canza mai ɗaukar kaya kamar kayan aikin injina ba, da sauransu kamar galvanometer na 2D. Ana amfani da tsayin robot ɗin don daidaita matsayin mayar da hankali kan walda.