Lub hauv paus ntsiab lus thiab kev faib tawm ntawm pos huab

Lub hauv paus ntsiab lus thiab kev faib tawm ntawm pos huab

(1) txoj cai

Lub hauv paus ntsiab lus ntawm pos huab hu ua Sagnac effect hauv physics. Hauv txoj kev kaw lub teeb, ob lub teeb ntawm tib lub teeb yuav raug cuam tshuam thaum lawv sib sau ua ke rau tib qho chaw kuaj pom. Yog tias txoj kev kaw lub teeb muaj kev sib hloov piv rau qhov chaw inertial, lub teeb nthuav dav hauv qhov kev taw qhia zoo thiab tsis zoo yuav tsim qhov sib txawv ntawm txoj kev teeb, uas yog proportional rau qhov ceev ntawm lub kaum sab xis sab saud. Qhov ceev ntawm lub kaum sab xis yog xam los ntawm kev siv qhov sib txawv theem ntsuas los ntawm photoelectric detector.

Los ntawm cov mis, qhov ntev ntawm cov fiber ntev npaum li cas, qhov loj dua ntawm lub teeb pom kev zoo, qhov luv dua ntawm qhov wavelength ntawm lub teeb. Qhov cuam tshuam ntau dua yog qhov tseem ceeb. Yog li qhov tseem ceeb ntawm qhov ntim ntawm pos huab, qhov siab dua qhov tseeb. Cov nyhuv Sagnac yog qhov tseem ceeb ntawm kev cuam tshuam, uas yog qhov tseem ceeb heev rau kev tsim cov dej noo.
Lub hauv paus ntsiab lus ntawm pos huab yog tias lub teeb ci ntsa iab raug xa tawm ntawm lub raj photoelectric thiab hla dhau lub coupler (ib qho kawg nkag mus rau peb qhov chaw nres). Ob lub teeb nkag mus rau hauv lub nplhaib hauv ntau qhov kev taw qhia los ntawm lub nplhaib thiab tom qab ntawd rov qab los ncig ib lub voj voog rau kev sib sau ua ke. Lub teeb rov qab los rau LED thiab ntes qhov muaj zog los ntawm LED. Lub hauv paus ntsiab lus ntawm pos huab zoo li yooj yim, tab sis qhov tseem ceeb tshaj plaws yog yuav ua li cas tshem tawm cov yam ntxwv uas cuam tshuam rau txoj kev pom ntawm ob lub teeb - qhov teeb meem tseem ceeb yog pos huab.

Lub hauv paus ntsiab lus ntawm fiber optic gyroscope

(2) kev faib tawm

Raws li lub hauv paus ntsiab lus ua haujlwm, cov fiber optic gyroscopes tuaj yeem muab faib ua interferometric fiber optic gyroscope (I-FOG), resonant fiber optic gyroscope (R-FOG), thiab stimulated Brillouin scattering fiber optic gyroscope (B-FOG). Tam sim no, cov fiber optic gyroscope laus tshaj plaws yog interferometric fiber optic gyroscope (thawj tiam fiber optic gyroscope), uas yog siv dav. Nws siv ntau lub kauj fiber los txhim kho Sagnac effect. Ntawm qhov tod tes, ob lub nplhaib interferometer uas muaj ntau lub kauj fiber ib hom tuaj yeem muab qhov tseeb siab, uas yuav ua rau tag nrho cov qauv nyuaj dua.
Raws li hom voj voog, pos huab tuaj yeem muab faib ua pos huab qhib-voj voog thiab FOG kaw-voj voog. Lub gyroscope fiber optic qhib-voj voog (Ogg) muaj qhov zoo ntawm cov qauv yooj yim, tus nqi qis, kev ntseeg siab siab, thiab kev siv hluav taws xob tsawg. Ntawm qhov tod tes, qhov tsis zoo ntawm Ogg yog cov kab nkag-tawm tsis zoo thiab qhov ntau thiab tsawg me me. Yog li ntawd, nws feem ntau yog siv ua lub sensor kaum sab xis. Cov qauv yooj yim ntawm IFOG qhib-voj voog yog lub nplhaib ob-beam interferometer. Yog li ntawd, nws feem ntau yog siv rau hauv qhov xwm txheej ntawm qhov tsis meej thiab me me.
Kev ua tau zoo ntawm pos huab
Pos huab feem ntau yog siv los ntsuas qhov ceev ntawm lub kaum sab xis, thiab txhua qhov kev ntsuas yog qhov yuam kev.

(1) suab nrov

Lub tshuab suab nrov ntawm pos huab feem ntau yog nyob rau hauv qhov kho qhov muag lossis photoelectric nrhiav pom qhov chaw, uas txiav txim siab qhov tsawg kawg nkaus detectable rhiab heev ntawm dej noo. Hauv fiber-optic gyroscope (FOG), qhov parameter piav qhia txog cov zis dawb suab nrov ntawm lub kaum sab xis yog qhov random taug kev coefficient ntawm qhov kev tshawb pom bandwidth. Nyob rau hauv cov ntaub ntawv ntawm tsuas yog dawb suab nrov, lub ntsiab lus ntawm random taug kev coefficient tuaj yeem yooj yim ua qhov piv ntawm qhov ntsuas bias stability rau lub hauv paus plaub fab ntawm qhov kev tshawb pom bandwidth hauv ib qho bandwidth tshwj xeeb.

Yog tias muaj lwm hom suab nrov lossis kev txav mus los, peb feem ntau siv Allan qhov kev tshuaj xyuas ntawm qhov sib txawv kom tau txais cov coefficient taug kev random los ntawm txoj kev zoo.

(2) Xoom drift

Thaum siv pos huab, yuav tsum tau xam lub kaum sab xis. Lub kaum sab xis tau los ntawm kev sib xyaw ua ke ntawm lub kaum sab xis. Hmoov tsis zoo, qhov kev hloov pauv tau sib sau ua ke tom qab lub sijhawm ntev, thiab qhov yuam kev loj zuj zus. Feem ntau, rau daim ntawv thov teb sai (lub sijhawm luv luv), suab nrov cuam tshuam rau lub kaw lus. Txawm li cas los xij, rau daim ntawv thov navigation (lub sijhawm ntev), xoom kev hloov pauv muaj kev cuam tshuam loj rau lub kaw lus.

(3) Qhov ntsuas ntsuas (qhov ntsuas ntsuas)

Qhov yuam kev ntawm qhov ntsuas me dua, qhov txiaj ntsig ntsuas tau zoo dua.

Beijing Rofea Optoelectronics Co., Ltd. nyob hauv Suav teb "Silicon Valley" - Beijing Zhongguancun, yog ib lub tuam txhab high-tech uas mob siab rau kev pabcuam rau cov tsev kawm ntawv tshawb fawb hauv tsev thiab txawv teb chaws, cov tsev kawm ntawv tshawb fawb, cov tsev kawm qib siab thiab cov neeg ua haujlwm tshawb fawb txog kev lag luam. Peb lub tuam txhab feem ntau koom nrog kev tshawb fawb thiab kev txhim kho ywj pheej, tsim qauv, tsim khoom, muag khoom ntawm cov khoom optoelectronic, thiab muab cov kev daws teeb meem tshiab thiab kev pabcuam tus kheej rau cov kws tshawb fawb thiab cov kws ua haujlwm hauv kev lag luam. Tom qab ntau xyoo ntawm kev tsim kho tshiab ywj pheej, nws tau tsim cov khoom lag luam photoelectric nplua nuj thiab zoo meej, uas siv dav hauv nroog, tub rog, kev thauj mus los, hluav taws xob, nyiaj txiag, kev kawm, kev kho mob thiab lwm yam lag luam.

Peb tab tom nrhiav rau pem hauv ntej rau kev koom tes nrog koj!