Airborne fiber optic inertial navigation solution

Yakakwira precision navigation system ndiyo yakakosha midziyo yekudzora kufamba kwendege uye kurwiswa chaiko kweiyo chombo system.Zvirongwa zvayo zvakanyanya zvinosanganisira zvirongwa zvepuratifomu uye zvirongwa zve strapdown.Nekuvandudzwa kwe strapdown inertial teknolojia uye optical gyro, strapdown yakashandiswa zvakanyanya mumunda wemhepo ine zvakanakira kuvimbika kwepamusoro, chiedza uye hukuru hudiki, kushandiswa kwesimba shoma uye mari shoma.^[1-4].Parizvino, airborne strapdown navigation system inosanganiswa nelaser gyro strapdown navigation system uye fiber optic gyro strapdown navigation system.Pakati pavo, Northrop Grumman's LN-100G, Honeywell's H-764G laser gyro strapdown navigation system uye Northrop Grumman's LN-100G uye Northrop Grumman's LN-100G. optic gyro strapdown navigation system yakashandiswa zvakanyanya muAmerican fighter aircraft fleet^[1].Northrop Grumman Company yakagadzira LN-251 navigation system yeherikoputa ine chiratidzo chakakosha chehigh precision fiber optic gyro, ndokubva yagadzira LN-260 kuti ienderane nekufamba nendege.LN-260 yakasarudzwa neUS Air Force ye Avionics upgrade yeF-16 multinational fighter fleet. Isati yatumirwa, iyo LN-260 system yakaedzwa kuti iwane nzvimbo yakarurama ye 0.49n mile (CEP), kukanganisa kweNorthbound velocity ye1.86ft / s (RMS), uye an eastbound velocity error ye2.43ft/s (RMS) munzvimbo ine simba zvikuru.Saka, optical strapdown inertial navigation system inogona kuzadzisa zvizere zvinodiwa zvekushanda kwendege maererano nekufamba uye kutungamira kugona.^[1].

Kuenzaniswa nelaser gyro strapdown navigation system, fiber optic gyro strapdown navigation system ine zvinotevera zvakanakira: 1) haidi jitter yemuchina, inorerutsa sisitimu chimiro uye kuoma kwekudzikisa dhizaini, inoderedza huremu uye mashandisiro emagetsi, uye inovandudza kuvimbika kwehurongwa hwekufamba;2) Iyo chaiyo spectrum yefiber optic gyro inovhara tactical level kusvika padanho rehurongwa, uye inoenderana navigation system inogonawo kuumba inoenderana navigation system spectrum, inovhara zvese kubva pamaitiro system kusvika kune yekufambisa sisitimu yenguva refu-. Endurance ndege;3) Huwandu hwefiber optic gyroscope zvakananga zvinoenderana nehukuru hwefiber ring.Nekushandiswa kwakakura kwefiber dhayamita yakatsetseka, huwandu hwefiber optic gyroscope ine huchokwadi hwakafanana huri kuramba hudiki uye hudiki, uye kukura kwechiedza uye miniaturization maitiro asingadzivisike.

Yakazara dhizaini chirongwa

Iyo airborne fiber optic gyro strapdown navigation system inonyatso funga nezve system kupisa dissipation uye photoelectric kupatsanurwa, uye inotora iyo "matatu-cavity" chirongwa.^[6,7], kusanganisira IMU mhango, yemagetsi mhango uye yechipiri simba mhango.Iyo IMU mhango ine IMU body chimiro, optical fiber inonzwa mhete uye quartz inoshanduka accelerometer (quartz pamwe nemamita); Iyo yemagetsi mhango ine gyro photoelectric bhokisi, mita yekushandura board, navigation komputa uye interface bhodhi, uye gwara rehutsanana. bhodhi; Iyo yechipiri simba mhango inoumbwa neyakavharwa yechipiri simba module, EMI sefa, charge-discharge capacitor. Iyo gyro photoelectric bhokisi uye optical fiber mhete muIMU cavity pamwe chete zvinoumba chikamu chegyro, uye quartz inochinjika accelerometer uye mita yekutendeuka ndiro. pamwe chete vanoumba chikamu che accelerometer^[8].

Iyo yakazara hurongwa inosimbisa kupatsanurwa kweiyo photoelectric zvikamu uye modular dhizaini yechikamu chimwe nechimwe, uye yakaparadzana dhizaini ye optical system uye dunhu redunhu kuti ive nechokwadi chekupisa kupisa kwese uye kudzvinyirirwa kwekupindira kwemuchinjikwa.Kuitira kuvandudza debuggability uye gungano tekinoroji ye chigadzirwa, zvibatanidza zvinoshandiswa kubatanidza mabhodhi edunhu mukamuri yemagetsi, uye optical fiber ring uye accelerometer muIMU chamber zvinogadziriswa zvakateerana.Mushure mekugadzira IMU, gungano rose rinoitwa.

 Bhodhi redunhu riri mugetsi remagetsi ndiro gyro photoelectric bhokisi kubva kumusoro kusvika pasi, kusanganisira iyo gyro light source, detector uye yekumberi discharge circuit; Tafura yekushandura bhodhi inonyanya kupedzisa kushandurwa kweiyo accelerometer yazvino chiratidzo kune dhijitari; Navigation mhinduro uye interface yedunhu inosanganisira interface board uye navigation solution board, interface board inonyanya kupedzisa kuwanikwa kweakawanda-channel inertial mudziyo data, magetsi ekudyidzana uye kutaurirana kwekunze, navigation solution board inonyanya kupedzisa yakachena inertial navigation uye yakabatanidzwa nzira yekufambisa; satellite navigation, uye inotumira ruzivo kune bhodhi rekugadzirisa bhodhi uye bhodhi rekugadzirisa kuti ripedze kushambadzira kwakabatanidzwa.Iyo yechipiri magetsi uye dhigirii yemagetsi yakabatanidzwa kuburikidza nechisungo, uye bhodhi redunhu rinobatanidzwa kuburikidza nekubatanidza.

Michina yakakosha

1. Integrated design scheme

Iyo airborne fiber optic gyro navigation system inoona iyo ndege madhigirii matanhatu ekusununguka kufamba kwekuona kuburikidza nekubatanidzwa kwema sensors akawanda.Three axis gyro uye matatu axis accelerometer inogona kutariswa seyepamusoro yekubatanidza dhizaini, kuderedza kushandiswa kwesimba, vhoriyamu uye uremu.Kune fiber optic. gyro chikamu, inogona kugovera sosi yemwenje kuti iite matatu-axis yekubatanidza dhizaini;Kune accelerometer chikamu, quartz flexible accelerometer inowanzoshandiswa, uye dunhu rekushandura rinogona kugadzirwa nenzira nhatu chete.Kunewo dambudziko renguva. kuwiriranisa mune akawanda-sensor data kutora.Kune yakakwirira dynamic maitiro ekuvandudza, kuenderana kwenguva kunogona kuve nechokwadi chechokwadi chekuvandudza maitiro.

2. Photoelectric separation design

Iyo fiber optic gyro inonzi fiber optic sensor inobva paSagnac effect yekuyera angular rate.Pakati pavo, fibre ring ndiyo chikamu chinokosha chekunzwa angular speed ye fiber gyroscope.Inokuvadzwa nemazana emazana emamita kusvika kuzviuru zvemamita efiber.Kana tembiricha yendima ye optical fiber ring ichichinja, tembiricha panzvimbo imwe neimwe ye optical fiber ring inoshanduka nekufamba kwenguva, uye matanda maviri emwenje wave achipfuura nepanzvimbo. panguva dzakasiyana-siyana (kunze kwepakati peiyo optical fiber coil), vanoona nzira dzakasiyana dze optical, zvichiita kuti pave nekusiyana kwechikamu, iyi isingadzokeri yechikamu chekuchinja isinganzwisisiki kubva pakuchinja kwechikamu cheSagneke chinokonzerwa nekutenderera.Kuitira kuvandudza tembiricha. kushanda kwefiber optic gyroscope, chikamu chepakati chegyroscope, mhete yefiber, inoda kuchengetedzwa kure nekupisa.

Kune iyo photoelectric yakabatanidzwa gyroscope, iyo photoelectric zvishandiso uye edunhu mabhodhi egyroscope ari padyo neiyo optical fiber ring.Kana iyo sensor iri kushanda, tembiricha yemudziyo pachayo inokwira kune imwe nhanho, uye inokanganisa optical fiber ring kuburikidza nemwaranzi uye conduction. iyo optical fiber gyroscope, inosanganisira optical path structure uye circuit structure, maviri emhando yegadziriro yakazvimiririra kupatsanurwa, pakati pe fiber uye waveguide line connection.Dzivisa kupisa kubva mubhokisi rechiedza rinokanganisa fiber heat transfer senitivity.

3. Simba-pa-self-detection design

Fiber optic gyro strapdown navigation system inoda kuva nemagetsi ekuita self-test function pane inertial device.Nekuti nzira yekufambisa inotora pure strapdown installation pasina transposition mechanism, kuzviedza kwezvishandiso zvisina simba kunopedzwa nekuyera kwakasimba muzvikamu zviviri, zvinoti. , mudziyo-level self-test uye system-level self-test, pasina ekunze transposition excitation.

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