Airborne fiber ntau optic inertial navigation tov

High precision navigation system yog cov cuab yeej tseem ceeb ntawm aircraft navigation tswj thiab meej nres ntawm nws cov riam phom system.Nws cov tswv yim tseem ceeb suav nrog cov phiaj xwm platform thiab cov phiaj xwm strapdown.Nrog txoj kev loj hlob ntawm strapdown inertial technology thiab optical gyro, strapdown tau dav siv nyob rau hauv lub tshav dav hlau nrog nws qhov zoo ntawm kev ntseeg siab, lub teeb thiab me me, tsawg zog noj thiab tsis muaj nqi.^[1-4].Tam sim no, airborne strapdown navigation system yog kev sib txuas ntawm laser gyro strapdown navigation system thiab fiber optic gyro strapdown navigation system.Nrog rau lawv, Northrop Grumman's LN-100G, Honeywell's H-764G laser gyro strapdown navigation system thiab Northrop Grumman's fiber ntau LN-2. optic gyro strapdown navigation system tau dav siv nyob rau hauv American fighter aircraft fleet^[1].Northrop Grumman tuam txhab tsim LN-251 navigation system rau nyoob hoom qav taub nrog lub cim tseem ceeb ntawm high precision fiber optic gyro, thiab tom qab ntawd tsim lub LN-260 kom hloov mus rau aircraft navigation.Lub LN-260 tau xaiv los ntawm US Air Force rau lub Kev hloov kho avionics ntawm F-16 multinational fighter fleet.Ua ntej xa mus, LN-260 system tau sim kom ua tiav txoj haujlwm raug ntawm 0.49n mais (CEP), qhov yuam kev sab qaum teb ntawm 1.86ft / s (RMS), thiab eastbound ceev ceev yuam kev ntawm 2.43ft / s (RMS) nyob rau hauv ib tug heev dynamic ib puag ncig.Yog li ntawd, lub optical strapdown inertial navigation system muaj peev xwm ua tau raws li qhov yuav tsum tau ua ntawm lub dav hlau nyob rau hauv cov nqe lus ntawm navigation thiab kev taw qhia muaj peev xwm.^[1].

Piv nrog rau laser gyro strapdown navigation system, fiber ntau optic gyro strapdown navigation system muaj qhov zoo hauv qab no: 1) nws tsis xav tau txhua yam jitter, simplifies lub system qauv thiab cov complexity ntawm kev co txo ​​tsim, txo qhov hnyav thiab lub zog noj, thiab txhim kho lub Kev ntseeg tau ntawm navigation system; 2) Lub precision spectrum ntawm fiber ntau optic gyro npog tactical theem mus rau lub tswv yim theem, thiab nws cov coj navigation system kuj tsim ib tug coj navigation system spectrum, npog txhua yam ntawm tus cwj pwm system mus rau lub navigation system nyob rau hauv ntev-ntev ntev- endurance aircraft; 3) Qhov ntim ntawm fiber ntau optic gyroscope ncaj qha nyob ntawm qhov loj ntawm lub nplhaib fiber ntau.Nrog rau daim ntawv thov paub tab ntawm cov kab fiber ntau zoo, qhov ntim ntawm fiber ntau optic gyroscope nrog tib qhov tseeb tau txais me me thiab me, thiab kev loj hlob ntawm lub teeb thiab miniaturization yog ib qho inevitable qauv.

Tag nrho cov qauv tsim

Lub dav hlau fiber ntau optic gyro strapdown navigation system tau txiav txim siab txog qhov system cua sov dissipation thiab photoelectric sib cais, thiab siv lub tswv yim "peb kab noj hniav"^[6,7], suav nrog IMU kab noj hniav, kab noj hniav hluav taws xob thiab cov kab noj hniav thib ob.IMU kab noj hniav muaj IMU lub cev qauv, optical fiber sensing nplhaib thiab quartz saj zawg zog accelerometer (quartz ntxiv meter); Cov kab noj hniav hluav taws xob muaj lub thawv gyro photoelectric, lub ntsuas hluav taws xob hloov pauv, lub computer navigation thiab interface board, thiab daim ntawv qhia kev huv. board; Cov kab noj hniav thib ob muaj xws li cov khoom siv hluav taws xob nruab nrab, EMI lim, tus nqi-tso tawm capacitor.Lub gyro photoelectric lub thawv thiab lub nplhaib fiber ntau hauv IMU kab noj hniav ua ke tsim cov gyro tivthaiv, thiab cov quartz saj zawg zog accelerometer thiab meter hloov phaj ua ke ua tus accelerometer tivthaiv^[8].

Tag nrho cov tswv yim hais txog kev sib cais ntawm cov khoom siv hluav taws xob thiab cov qauv tsim ntawm txhua qhov khoom, thiab kev sib cais tsim ntawm optical system thiab Circuit Court system los xyuas kom meej tag nrho cov cua sov dissipation thiab kev tsuj ntawm cross interference.In thiaj li yuav txhim kho lub debuggability thiab sib dhos tshuab ntawm cov khoom, cov khoom sib txuas yog siv los txuas cov kab hluav taws xob hauv lub tshuab hluav taws xob, thiab lub nplhaib fiber ntau optical thiab accelerometer hauv IMU chamber yog debugged raws li.Tom qab tsim IMU, tag nrho lub rooj sib txoos yog nqa tawm.

 Lub rooj tsav xwm hauv lub tshuab hluav taws xob yog lub gyro photoelectric lub thawv los ntawm sab saum toj mus rau hauv qab, nrog rau lub teeb ci gyro, ntes thiab pem hauv ntej tawm Circuit Court; Lub rooj hloov pauv lub rooj feem ntau ua tiav cov kev hloov pauv ntawm lub ntsuas hluav taws xob tam sim no rau cov teeb liab digital; Kev daws teeb meem thiab interface circuit muaj xws li interface board thiab navigation tov board, interface board tsuas yog ua tiav synchronous nrhiav tau ntawm ntau-channel inertial ntaus ntawv cov ntaub ntawv, fais fab mov kev sib txuas lus thiab lwm yam kev sib txuas lus, navigation tov board mas ua tiav ntshiab inertial navigation thiab integrated navigation tov; Cov lus qhia board feem ntau ua tiav cov satellite navigation, thiab xa cov ntaub ntawv mus rau lub navigation tov board thiab lub interface board ua kom tiav cov kev sib txuas navigation.Qhov thib ob lub zog mov thiab lub interface Circuit Court yog kev cob cog rua los ntawm lub connector, thiab lub Circuit Court board txuas los ntawm lub connector.

Cov thev naus laus zis tseem ceeb

1. Integrated tsim qauv

Lub dav hlau fiber ntau optic gyro navigation system paub txog lub dav hlau rau qib kev ywj pheej nrhiav kom pom los ntawm kev sib koom ua ke ntawm ntau lub sensors.Peb axis gyro thiab peb axis accelerometer tuaj yeem txiav txim siab rau kev sib koom ua ke siab tsim, txo lub zog noj, ntim thiab qhov hnyav.Rau qhov fiber ntau optic. gyro tivthaiv, nws muaj peev xwm qhia tau lub teeb qhov chaw mus nqa tawm peb-axis kev koom ua ke tsim; Rau lub accelerometer tivthaiv, quartz saj zawg zog accelerometer feem ntau yog siv, thiab lub converter Circuit Court tsuas yog tsim nyob rau hauv peb txoj kev.Muaj kuj yog qhov teeb meem ntawm lub sij hawm. synchronization hauv multi-sensor cov ntaub ntawv tau txais.Rau kev hloov pauv tus cwj pwm siab, lub sijhawm sib xws tuaj yeem ua kom qhov tseeb ntawm tus cwj pwm hloov tshiab.

2. Photoelectric sib cais tsim

Lub fiber optic gyro yog fiber ntau optic sensor raws li Sagnac nyhuv los ntsuas angular npaum li cas. Ntawm lawv, lub nplhaib fiber ntau yog qhov tseem ceeb ntawm cov rhiab angular ceev ntawm fiber ntau gyroscope.Nws raug mob los ntawm ob peb puas meters mus rau ob peb txhiab meters ntawm fiber ntau.Yog hais tias qhov kub thiab txias ntawm lub nplhaib optical fiber ntau hloov, qhov kub ntawm txhua qhov taw tes ntawm lub nplhaib fiber ntau hloov nrog lub sijhawm, thiab ob kab teeb ntawm lub teeb yoj dhau los ntawm qhov taw tes. nyob rau lub sijhawm sib txawv (tshwj tsis yog qhov nruab nrab ntawm qhov chaw kho qhov muag fiber ntau), lawv muaj kev sib txawv ntawm kev kho qhov muag, uas ua rau muaj kev sib txawv ntawm theem, qhov kev hloov pauv tsis yog qhov sib txawv ntawm Sagneke theem hloov pauv los ntawm kev sib hloov. kev ua tau zoo ntawm fiber ntau optic gyroscope, cov ntsiab lus tseem ceeb ntawm gyroscope, lub nplhaib fiber ntau, yuav tsum tau khaws cia kom deb ntawm qhov chaw kub.

Rau lub photoelectric integrated gyroscope, cov khoom siv hluav taws xob photoelectric thiab Circuit Court boards ntawm gyroscope yog nyob ze rau lub nplhaib fiber ntau optical.Thaum lub sensor ua haujlwm, qhov kub ntawm lub cuab yeej nws tus kheej yuav nce mus rau qee qhov, thiab cuam tshuam rau lub nplhaib optical fiber ntau los ntawm cov hluav taws xob thiab kev ua haujlwm. qhov kho qhov muag fiber ntau gyroscope, suav nrog cov qauv kho qhov muag thiab cov qauv hauv Circuit Court, ob hom qauv kev ywj pheej sib cais, nruab nrab ntawm cov fiber ntau thiab cov waveguide kab kev sib txuas. Zam tsis txhob muaj cua sov los ntawm lub teeb lub thawv uas cuam tshuam rau fiber ntau hloov rhiab heev.

3. Fais fab-ntawm tus kheej-tsim tsim

Fiber optic gyro strapdown navigation system yuav tsum muaj cov hluav taws xob kev ua tau zoo ntawm tus kheej-kuaj muaj nuj nqi ntawm lub inertial ntaus ntawv.Vim hais tias lub navigation system adopts ntshiab strapdown installation tsis muaj kev hloov mechanism, tus kheej-testing ntawm inertial li yog ua tiav los ntawm kev ntsuas static nyob rau hauv ob qhov chaw, namely , ntaus ntawv-theem tus kheej-test thiab system-theem nws tus kheej-test, tsis muaj kev hloov mus rau sab nraud excitation.

ERDI TECH LTD Soluzioni rau cov txheej txheem tshwj xeeb