Xalka marinka hawada ee fibre optic inertial navigation

Nidaamka hagidda saxda ah ee saxda ah waa qalabka xudunta u ah xakameynta hagidda diyaaradaha iyo weerarka saxda ah ee nidaamka hubkeeda.Nidaamyadeeda caadiga ah waxaa ka mid ah nidaamyada madal iyo nidaamyada xargaha. Iyadoo horumarinta tignoolajiyada inertial strapdown iyo gyro indhaha, xargaha ayaa si weyn loogu isticmaalay garoonka hawada iyada oo leh faa'iidooyinka kalsoonida sare, iftiinka iyo cabbirka yar, isticmaalka tamarta hooseeya iyo kharash yar.^[1-4]Waqtigan xaadirka ah, nidaamka navigation suunka hawada waa isku darka nidaamka navigation laser gyro strapdown iyo nidaamka fiber optic gyro strapdown navigation. iyaga ka mid ah, Northrop Grumman's LN-100G, Honeywell's H-764G laser gyro strapdown navigation nidaamka iyo fiber Lrop-25. Navigation nidaamka suunka gyro optic ayaa si weyn loogu isticmaalay diyaaradaha dagaalka ee Mareykanka^[1].Northrop Grumman Company waxay horumarisay nidaamka navigation LN-251 ee helicopter leh calaamadda muhiimka ah ee fiber optic gyro sax ah oo sare, ka dibna waxay horumarisay LN-260 si ay ula qabsato navigation diyaaradaha.LN-260 waxaa doortay ciidamada Cirka ee Maraykanka Kahor inta aan la dirin, nidaamka LN-260 ayaa la tijaabiyay si loo gaaro saxsanaanta booska 0.49n mayl (CEP), cilad xawaareedka waqooyi ee 1.86ft/s (RMS), iyo Ciladda xawaaraha bari ee 2.43ft / s (RMS) ee jawi aad u firfircoon. Sidaa darteed, nidaamka navigation inertial navigation ee suunka indhaha ayaa si buuxda u buuxin kara shuruudaha hawlgalka ee diyaaradda marka la eego awoodda hagitaan iyo hagitaan^[1].

Marka la barbardhigo nidaamka navigation suunka laser gyro, nidaamka navigation fiber optic gyro strapdown wuxuu leeyahay faa'iidooyinka soo socda: 1) uma baahna jitter farsamo, fududeeyaa qaab-dhismeedka nidaamka iyo kakanaanta ee dhimista gariir design, yaraynaysaa miisaanka iyo isticmaalka awoodda, iyo hagaajinaysaa isku halaynta nidaamka navigation;2) spectrum saxda ah ee fiber optic gyro waxay dabooshaa heerka taatikada ilaa heerka istiraatijiyadeed, iyo nidaamkeeda navigation ee u dhigma ayaa sidoo kale samayn kara nidaamka navigation spectrum u dhigma, oo daboolaya wax walba laga bilaabo nidaamka dabeecadda ilaa nidaamka navigation ee muddada dheer - diyaaradaha adkeysiga;3) Mugga gyroscope fiber optic si toos ah waxay ku xiran tahay xajmiga giraanta fiber-ka.Codsiga qaan gaadhka ah ee fiber dhexroorka ganaaxa, mugga gyroscope fiber optic oo isla sax ah ayaa sii yaraanaya oo sii yaraanaya, horumarinta iftiinka iyo yaraynta waa isbeddel lama huraan ah.

Nidaamka naqshadeynta guud

Fiber optic gyro strapdown navigation nidaamka hawo-mareenka si buuxda ayuu u tixgaliyaa nidaamka kala dirida kulaylka iyo kala-soocidda korantada, oo qaata nidaamka "saddex-god"^[6,7], oo ay ku jiraan godka IMU, godka elektiroonigga ah iyo daloolka awoodda sare.Godka IMU wuxuu ka kooban yahay qaab dhismeedka jirka ee IMU, giraanta dareemada fiber indhaha iyo quartz xawaaraha dabacsan (quartz oo lagu daray mitir); dalool elektarooniga ah wuxuu ka kooban yahay sanduuqa sawirka gyro, guddiga beddelka mitirka, kumbuyuutarka navigation iyo guddiga isdhexgalka, iyo hagaha fayadhowrka Godka korantada sare waxa uu ka kooban yahay module koronto oo baakadaysan, filter EMI, capacitor charge-flow capacitor.Sanduuqa sawirka gyro iyo giraanta fiber indhaha ee godka IMU si wada jir ah ayaa ka kooban qaybta gyro, iyo quartz xawaarihiisa dabacsan iyo saxanka beddelka mitirka. wadar ahaan waxay ka kooban yihiin qaybta xawaaraha^[8].

Nidaamka guud wuxuu xooga saarayaa kala-soocidda qaybaha sawir-qaadista iyo naqshadeynta moodeelka ee qayb kasta, iyo naqshadeynta gaarka ah ee nidaamka indhaha iyo nidaamka wareegga si loo hubiyo in kuleylka guud ee kuleylka iyo xakameynta faragelinta iskutallaabta. wax soo saarka, Xidhiidhiyayaasha waxaa loo isticmaalaa in lagu xidho loox wareegga ee qolka elegtarooniga ah, iyo giraanta fiber indhaha iyo accelerometer ee qolka IMU waa debugged siday u kala horreeyaan.Ka dib markii la sameeyo IMU, golaha oo dhan waa la fuliyay.

 Qalabka wareegga ee godka elektiroonigga ah waa sanduuqa sawirka gyro ee kor ilaa hoose, oo ay ku jiraan isha iftiinka gyro, baaraha iyo wareegga hore ee dheecaanka; Guddiga beddelka miiska inta badan wuxuu dhammaystiraa beddelka xawaaraha hadda jira ee calaamadda dhijitaalka ah; Xalka socodka iyo Wareegga interface waxaa ka mid ah guddiga interface iyo guddiga xalinta navigation, guddiga interface inta badan waxay dhamaystiraan helitaanka isku dhafan ee xogta qalabka inertial channel multi-channel, dhexgalka sahayda korontada iyo isgaarsiinta dibadda, guddiga xalinta navigation inta badan dhamaystiro navigation saafi ah inertial iyo xal navigation isku dhafan; navigation dayax-gacmeedka, oo u dira macluumaadka guddiga xalinta navigation iyo guddiga interface si ay u dhamaystiraan navigation isku dhafan.The koronto labaad iyo wareegga interface waxay ku xiran yihiin xiriiriyaha, iyo guddiga wareegga waxaa lagu xiray iyada oo xiriiriyaha.

Farsamooyinka muhiimka ah

1. Nashqada naqshadaynta isku dhafan

Nidaamka navigation ee fiber optic gyro ee hawada ayaa ogaanaya lixda darajo ee diyaaradda ee ogaanshaha dhaqdhaqaaqa xorriyadda iyada oo loo marayo isdhexgalka dareemayaasha badan. Qaybta gyro, waxay la wadaagi kartaa isha iftiinka si ay u fuliso naqshadeynta isdhexgalka saddexda dhidibka ah; Qeybta xawaaraha, quartz xawaare dabacsanaan ayaa guud ahaan loo isticmaalaa, wareegga beddelka waxaa loo qaabeyn karaa oo kaliya saddex siyaabood. Waxaa sidoo kale jira dhibaatada wakhtiga isku xidhka helitaanka xogta dareemayaasha badan.Cusboonaysiinta dabeecadda firfircoon ee sare, joogtaynta wakhtiga waxay xaqiijin kartaa saxnaanta cusboonaysiinta dabeecadda.

2. Naqshadaynta kala-soocidda sawir-qaadista

Fiber optic gyro waa dareeraha fibre optic ee ku salaysan saamaynta Sagnac si loo cabbiro qiyaasta xagasha.Waxaa ku dhaawacma dhowr boqol oo mitir ilaa dhowr kun oo mitir oo fiber ah. Haddii goobta heerkulka giraanta fiber-ka indhaha isbeddesho, heerkulku meel kasta oo giraanta fiber-ka ah ayaa isbeddelaya waqti ka dib, labada shucaac ee hirarka iftiinka ayaa ka gudbaya barta. waqtiyo kala duwan (marka laga reebo barta dhexe ee gariiradda fiber optic), waxay la kulmaan wadooyin kala duwan oo indhaha ah, taasoo keentay kala duwanaansho waji, isbeddelka wejigan aan is-dhaafsiga ahayn waa mid aan la kala saari karin isbeddelka wejiga Sagneke ee uu keeno wareegga. Si loo hagaajiyo heerkulka waxqabadka fiber optic gyroscope, qaybta xudunta u ah gyroscope, giraanta fiber, waxay u baahan tahay in laga fogeeyo isha kulaylka.

Gyroscope-ka isku-dhafan ee korantada ee sawir-qaadista, aaladaha sawir-qaadista iyo looxyada wareegga ee gyroscope waxay ku dhow yihiin giraanta fiber-ka indhaha.Marka dareemaha uu shaqeynayo, heerkulka qalabka laftiisa ayaa kor u kici doona ilaa xad, wuxuuna saameeyaa giraanta fiber-ka indhaha iyada oo loo marayo shucaac iyo conduction.Si loo xalliyo saameynta heerkulka giraanta fiber-ka indhaha, nidaamku wuxuu isticmaalaa kala-soocida sawir-qaadista gyroscope fiber indhaha, oo ay ku jiraan qaab-dhismeedka jidka indhaha iyo qaab-dhismeedka wareegga, laba nooc oo ka mid ah kala soocida madax bannaan, dhexeeya fiber iyo xidhiidhka line waveguide.

3. Naqshadaynta is-ogaanshaha awoodda

Fiber optic gyro strapdown navigation nidaamka wuxuu u baahan yahay inuu haysto waxqabadka korantada ee is-tijaabinta qalabka is-tijaabinta.Sababtoo ah nidaamka navigation wuxuu qaataa rakibaadda suunka saafiga ah iyada oo aan lahayn habka gudbinta, is-tijaabada qalabka is-tijaabinta waxaa lagu dhammeeyaa cabbirka static ee laba qaybood, kuwaas oo kala ah. , is tijaabinta heerka-qalabka iyo is-imtixaanka heerka-nidaamka, iyada oo aan lahayn kicinta beddelka dibadda.

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