Isixazululo se-Airborne fibre optic inertial navigation

Isistimu yokuzulazula enembe kakhulu iyisisetshenziswa esiyinhloko sokulawula ukuzulazula kwendiza kanye nokuhlasela okunembile kwesistimu yayo yezikhali.Izikimu zayo ezivamile zihlanganisa izikimu zeplatifomu kanye nezinhlelo ze-strapdown.Ngokuthuthukiswa kobuchwepheshe be-strapdown inertial kanye ne-optical gyro, i-strapdown isetshenziswe kabanzi emkhakheni we-airborne ngezinzuzo zayo zokuthembeka okuphezulu, ukukhanya nobukhulu obuncane, ukusetshenziswa kwamandla okuphansi kanye nezindleko eziphansi.^[1-4].Okwamanje, i-airborne strapdown navigation system iyinhlanganisela ye-laser gyro strapdown navigation system kanye ne-fiber optic gyro strapdown navigation system.Phakathi kwayo, i-LN-100G ka-Northrop Grumman, i-Honeywell's H-764G laser gyro strapdown navigation system kanye ne-Northrop fiber Grum2's LN-200G i-optic gyro strapdown navigation system iye yasetshenziswa kakhulu emikhunjini yezindiza zaseMelika^[1].Inkampani yaseNorthrop Grumman ithuthukise uhlelo lokuzulazula lwe-LN-251 lwendiza enophephela emhlane enophawu olubalulekile lokunemba okuphezulu kwe-fiber optic gyro, yase ithuthukisa i-LN-260 ukuze ivumelane nokuhamba kwezindiza.I-LN-260 yakhethwa yi-US Air Force ukuze ukuthuthukiswa kwezindiza zezindiza zezindiza zamazwe ngamazwe ze-F-16. Ngaphambi kokuthunyelwa, isistimu ye-LN-260 yahlolwa ukuze kuzuzwe ukunemba kwesikhundla samamayela angu-0.49n (CEP), iphutha lejubane elibheke enyakatho elingu-1.86ft/s (RMS), kanye Iphutha lejubane elibheke empumalanga lika-2.43ft/s (RMS) endaweni eguquguqukayo kakhulu.Ngakho-ke, isistimu yokuzulazula ye-optical strapdown inertial ingahlangabezana ngokugcwele nezimfuneko zokusebenza zendiza ngokuya nekhono lokuqondisa.^[1].

Uma kuqhathaniswa ne-laser gyro strapdown navigation system, i-fiber optic gyro strapdown navigation system inezinzuzo ezilandelayo: 1) ayidingi i-jitter engumshini, yenza ukwakheka kwesistimu kube lula nobunkimbinkimbi bokuklanywa kokunciphisa ukudlidliza, yehlisa isisindo namandla asetshenziswayo, futhi ithuthukisa ukwethembeka kwesistimu yokuzulazula;2) I-spectrum enembayo ye-fiber optic gyro ihlanganisa izinga lobuhlakani ukuya ezingeni lamasu, futhi isistimu yayo yokuzulazula ehambisanayo nayo ingakha i-spectrum yesistimu yokuzula ehambisanayo, ehlanganisa yonke into kusukela kusistimu yesimo sengqondo kuya ohlelweni lokuzulazula lwebanga elide- indiza enyamezelayo;3) Ivolumu ye-fiber optic gyroscope incike ngokuqondile kusayizi weringi ye-fiber.Ngokusetshenziswa okuvuthiwe kwefayibha yodayamitha ecolekileyo, umthamo we-fiber optic gyroscope onokunemba okufanayo uya ngokuya uba mncane futhi ube mncane, futhi ukuthuthuka kokukhanya kanye nokwenza okuncane kuwumkhuba ongenakugwenywa.

Uhlelo lokuklama lulonke

I-airborne fiber optic gyro strapdown navigation system icabangela ngokugcwele ukuchithwa kokushisa kwesistimu nokuhlukaniswa kwesithombe sikagesi, futhi yamukela isikimu "semigodi emithathu"^[6,7], okuhlanganisa umgodi we-IMU, umgodi kagesi kanye nomgodi wamandla wesibili.Imbobo ye-IMU iqukethe isakhiwo somzimba we-IMU, indandatho ye-fiber optical sensing kanye ne-quartz flexible accelerometer (quartz plus meter); I-electronic cavity iqukethe ibhokisi le-gyro photoelectric, ibhodi lokuguqula amamitha, ikhompuyutha yokuzulazula kanye nebhodi lesixhumi esibonakalayo, kanye nomhlahlandlela wokukhucululwa kwendle. ibhodi;Isikhala samandla sesibili sihlanganisa imojuli yamandla yesibili ehlanganisiwe, isihlungi se-EMI, i-charge-discharge capacitor.Ibhokisi le-gyro photoelectric kanye neringi ye-fiber optical ku-IMU cavity ndawonye bakha ingxenye ye-gyro, kanye ne-quartz flexible accelerometer kanye nepuleti lokuguqula imitha. ndawonye bakha ingxenye ye-accelerometer^[8].

Uhlelo oluphelele lugcizelela ukuhlukaniswa kwezingxenye ze-photoelectric kanye nomklamo we-modular wengxenye ngayinye, kanye nomklamo ohlukile wesistimu ye-optical kanye nesistimu yesifunda ukuze kuqinisekiswe ukuchithwa kokushisa okuphelele nokucindezelwa kokuphazanyiswa okuphambene. umkhiqizo, izixhumi zisetshenziselwa ukuxhuma amabhodi esekethe ekamelweni le-elekthronikhi, futhi indandatho ye-fiber optical kanye ne-accelerometer ekamelweni le-IMU alungiswa ngokulandelana.Ngemva kokwenza i-IMU, umhlangano wonke uqhutshwa.

 Ibhodi lesifunda kumgodi we-elekthronikhi yibhokisi le-gyro photoelectric ukusuka phezulu kuya phansi, okuhlanganisa umthombo wokukhanya we-gyro, umtshina kanye nesekhethi yokukhipha ngaphambili; Ibhodi lokuguqula ithebula liqedela ngokuyinhloko ukuguqulwa kwesiginali ye-accelerometer yamanje kusignali yedijithali; isixhumi esibonakalayo sihlanganisa ibhodi lesixhumi esibonakalayo kanye nebhodi lesixazululo sokuzulazula, ibhodi lesixhumi esibonakalayo ngokuyinhloko liqedela ukutholwa okuvumelanayo kwedatha yedivayisi ye-inertial eneziteshi eziningi, ukusebenzisana kwamandla kagesi kanye nokuxhumana kwangaphandle, ibhodi lesixazululo sokuzulazula ngokuyinhloko liqedela ukuzulazula okuhlanzekile kwe-inertial kanye nesisombululo sokuzulazula esididiyelwe; Ibhodi lomhlahlandlela liqedela ngokuyinhloko ukuzulazula ngesathelayithi, futhi ithumela ulwazi ebhodini lesixazululo sokuzulazula kanye nebhodi lesixhumi esibonakalayo ukuze kuqedelwe ukuzulazula okuhlanganisiwe.Ukunikezwa kwamandla kwesibili kanye nesekethe yesixhumi esibonakalayo kuxhunywe ngesixhumi, futhi ibhodi lesifunda lixhunywe ngesixhumi.

Ubuchwepheshe obubalulekile

1. Uhlelo oludidiyelwe lokuklama

I-airborne fibre optic gyro navigation system ibona amadigri ayisithupha endiza okuthola ukunyakaza kwenkululeko ngokuhlanganiswa kwezinzwa eziningi.I-Three axis gyro kanye ne-accelerometer emithathu ye-axis kungacatshangelwa ukuklama okuhlanganisiwe okuphezulu, ukunciphisa ukusetshenziswa kwamandla, ivolumu kanye nesisindo.Okwefiber optic. ingxenye ye-gyro, ingabelana ngomthombo wokukhanya ukuze yenze umklamo wokuhlanganisa wama-eksisi amathathu;Engxenyeni ye-accelerometer, i-quartz flexible accelerometer ngokuvamile isetshenziswa, futhi umjikelezo wokuguqula ungaklanywa ngezindlela ezintathu kuphela.Kuphinde kube nenkinga yesikhathi ukuvumelanisa ekutholweni kwedatha yezinzwa eziningi.Ukuze uthole ukubuyekezwa okuphezulu kwesimo sengqondo esiguqukayo, ukungaguquguquki kwesikhathi kungaqinisekisa ukunemba kokubuyekezwa kwesimo sengqondo.

2. Idizayini yokuhlukanisa i-photoelectric

I-fiber optic gyro iyinzwa ye-fiber optic esekelwe kumphumela we-Sagnac wokulinganisa izinga le-angular.Phakathi kwayo, iringi ye-fiber iyingxenye eyinhloko yesivinini esibucayi se-angular ye-fiber gyroscope.Ilinyazwe ngamamitha angamakhulu ambalwa kuya kumamitha ayizinkulungwane ezimbalwa zefiber.Uma inkambu yokushisa yendandatho ye-fiber optical ishintsha, izinga lokushisa endaweni ngayinye yendandatho ye-fiber optical liyashintsha ngokuhamba kwesikhathi, futhi imishayo emibili yamaza okukhanya idlula iphuzu. ngezikhathi ezihlukene (ngaphandle kwephuzu elimaphakathi lekhoyili ye-fiber optical), bathola izindlela ezihlukile ze-optical, okuholela ekuhlukeni kwesigaba, lokhu kushintsha kwesigaba okungashintshile akuhlukaniseki kusukela ekushintsheni kwesigaba se-Sagneke okubangelwa ukujikeleza.Ukuze kuthuthukiswe izinga lokushisa ukusebenza kwe-fiber optic gyroscope, ingxenye eyinhloko ye-gyroscope, iringi yefiber, idinga ukubekwa kude nomthombo wokushisa.

Nge-gyroscope ehlanganisiwe ye-photoelectric, amadivaysi e-photoelectric namabhodi esekethe e-gyroscope aseduze nendandatho ye-fiber optical.Lapho inzwa isebenza, izinga lokushisa ledivayisi ngokwalo lizokhuphuka ngezinga elithile, futhi lithinte indandatho yefiber optical ngokusebenzisa imisebe kanye ne-conduction. i-gyroscope ye-fiber optical, kuhlanganise nesakhiwo somzila we-optical kanye nesakhiwo sesifunda, izinhlobo ezimbili zesakhiwo sokuhlukaniswa okuzimele, phakathi kwe-fiber kanye nokuxhumeka komugqa we-waveguide.Gwema ukushisa okuvela ebhokisini lomthombo wokukhanya okuthinta ukuzwela kokudlulisa ukushisa kwe-fiber.

3. Idizayini yokuzibonela ngawakho amandla

Isistimu yokuzulazula ye-Fiber optic gyro strapdown idinga ukuba nomsebenzi wokuzihlola ukusebenza kukagesi kudivayisi engenzi lutho.Ngenxa yokuthi isistimu yokuzulazula isebenzisa ukufakwa kwe-strapdown emsulwa ngaphandle kwendlela yokuguqula, ukuzihlola kwemishini engasebenzi kahle kuqedwa ngokulinganisa okumile ezingxenyeni ezimbili, okuyilezi. , ukuzihlola kweleveli yedivayisi kanye nokuzihlola kweleveli yesistimu, ngaphandle kwesasasa lokuguqulwa kwangaphandle.

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