Ko te otinga whakatere inertial inertial navigation rangi

Ko te punaha whakatere tino tika te taputapu matua mo te whakahaere whakatere waka rererangi me te whakaeke tika o tana punaha patu.Ko ona kaupapa auraki ko nga kaupapa papaa me nga kaupapa here.Na te whakawhanaketanga o te hangarau inertial strapdown me te gyro whatu, kua whakamahia nuitia te strapdown i roto i te papa rererangi me ona painga o te tino pono, te marama me te iti o te rahi, te iti o te kaha me te utu iti.^[1-4].I tenei wa, ko te punaha whakatere strapdown hau he huinga o te punaha whakatere taiaho gyro strapdown me te punaha whakatere gyro optic strapdown. Ko te punaha whakatere gyro strapdown kua whakamahia nuitia i roto i nga waka rererangi whawhai a Amerika^[1].Ko te Kamupene Northrop Grumman i whakawhanake te punaha whakatere LN-251 mo te waka topatopa me te tohu nui o te gyro fiber optic teitei, a ka whakawhanakehia te LN-260 ki te urutau ki te whakatere waka rererangi.Ko te LN-260 i tohua e te US Air Force mo te whakamohoatanga avionics o te waka rererangi F-16. I mua i te tukunga, i whakamatauria te punaha LN-260 ki te whakatutuki i te tika o te tuunga o te 0.49n maero (CEP), he hapa tere o te taha raki o te 1.86ft/s (RMS), me te Ko te hapa o te tere tere ki te rawhiti o te 2.43ft / s (RMS) i roto i te taiao tino hihiri.^[1].

Ka whakatauritea ki te punaha whakatere laser gyro strapdown navigation, muka optic gyro strapdown navigation system e whai ake nei nga painga: 1) kaore e hiahiatia he jitter miihini, ka ngawari te hanganga o te punaha me te uaua o te hoahoa whakaheke wiri, te whakaiti i te taumaha me te kai mana, me te whakapai ake i te te pono o te punaha whakatere;2) Ko te hiranga o te muka whatu gyro e kapi ana i te taumata rauhanga ki te taumata rautaki, a ka taea hoki e tana punaha whakatere te hanga i te awhi o te punaha whakatere, e kapi ana nga mea katoa mai i te punaha waiaro ki te punaha whakatere mo te waa-roa-roa. rererangi manawanui; 3) Ko te nui o te gyroscope muka whatu ka whakawhirinaki ki te rahi o te mowhiti muka.Na te tono pakeke o te muka diameter pai, kei te iti haere te rahi o te gyroscope muka optic me te tika ano, a ko te whanaketanga o te marama me te miniaturization he ahua e kore e taea te karo.

Te kaupapa hoahoa whanui

Ko te punaha whakatere gyro optic gyro strapdown hau e tino whakaaro ana ki te whakamaaramatanga o te wera o te punaha me te wehenga photoelectric, me te tango i te kaupapa "toru-kowha"^[6,7], tae atu ki te kohao IMU, te kohao hiko me te kohao hiko tuarua.Kei roto i te kohao IMU te hanganga tinana IMU, te whakakai whakaata muka whatu me te quartz flexible accelerometer (quartz me te mita); Ko te kohao hiko kei roto he pouaka gyro photoelectric, he papa hurihuri mita, he rorohiko whakatere me te papa atanga, me te aratohu horoi. papa;Kei roto i te kohao hiko tuarua he kōwae hiko tuarua, tātari EMI, pūnga utu-tuku. Ko te pouaka whakaahua hiko me te whakakai muka whatu i roto i te rua IMU ka noho tahi te wahanga gyro, me te quartz flexible accelerometer me te pereti hurihuri mita. ka noho tahi ko te waahanga whakatere^[8].

Ko te kaupapa whanui e whakanui ana i te wehewehenga o nga waahanga whakaahua me te hoahoa modular o ia waahanga, me te hoahoa motuhake o te punaha whatu me te punaha ara iahiko hei whakarite i te whakamaaramatanga o te wera me te aukati i te wawaotanga whakawhiti. Ko te hua, ka whakamahia nga hononga hono ki te hono i nga papa taiawhio i roto i te ruma hiko, me te whakakai muka whatu me te whakaterenga i roto i te ruma IMU kua whakakorehia.I muri i te hanganga o te IMU, ka whakahaerehia te huihuinga katoa.

 Ko te poari ara iahiko i roto i te kohao hiko ko te pouaka gyro photoelectric mai i runga ki raro, tae atu ki te puna marama gyro, kairapu me te ara iahiko tuku o mua; Ko te poari whakawhiti tepu te nuinga o te whakaoti i te huringa o te tohu o naianei accelerometer ki te tohu mamati;Navigation solution me Ko te ara iahiko atanga kei roto i te papa atanga me te poari otinga whakatere, te nuinga o te poari atanga te whakaoti i te hoko tukutahi o nga raraunga taputapu inertial hongere maha, te whakawhitiwhiti hiko me te whakawhitiwhiti korero o waho, te nuinga o te poari otinga whakatere ka oti te whakatere inertial parakore me te otinga whakatere whakauru; te whakatere amiorangi, me te tuku i nga korero ki te poari otinga whakatere me te poari atanga ki te whakaoti i te whakatere whakauru.Ko te hiko tuarua me te waahi atanga e hono ana i roto i te hononga, a ka honohia te papaarangi ma te hono.

Nga hangarau matua

1. Kaupapa hoahoa whakauru

Ko te punaha whakatere gyro muka o te rangi e mohio ana ki nga nekehanga e ono o nga nekehanga o te rererangi i roto i te whakakotahitanga o te maha o nga sensors.Three axis gyro and three axis accelerometer can be considered for high integration design, reduce power consumption, volume and weight.For the fiber optic Wāhanga gyro, ka taea e ia te tiri i te puna marama ki te kawe i te hoahoa whakauru toru-tuaka; Mo te waahanga whakatere, te nuinga o te whakamahi i te quartz flexible accelerometer, a ka taea anake te hoahoa i te ara iahiko hurihanga i roto i nga huarahi e toru. Kei reira ano te raruraru o te wa tukutahitanga i roto i te tango raraunga maha-sensor.Mo te whakahoutanga waiaro hihiri nui, ka taea e te riterite o te waa te whakarite i te tika o te whakahou waiaro.

2. Hoahoa wehewehe photoelectric

Ko te muka whatu gyro ko te muka whatu pūoko i runga i te pānga Sagnac ki te ine auau koki.I roto ia ratou, te mowhiti muka ko te wāhanga matua o te tere koki tairongo o te muka gyroscope.Ka werohia e te maha rau mita ki te maha mano mita o te muka.Mehemea ka huri te waahi mahana o te mowhiti muka whatu, ka huri te pāmahana i ia waahi o te mowhiti muka whatu ki te wa, ka haere nga kurupae e rua o te ngaru marama i roto i te tohu. i nga wa rereke (haunga te waahi waenganui o te kopae muka whatu), ka wheako i nga huarahi rereke rereke, ka puta mai he rereketanga o te waahanga, kaore e taea te rereke tenei nekehanga o te waahanga kore-tauutuutu mai i te nekehanga o te wahanga Sagneke na te hurihanga. Hei whakapai ake i te pāmahana. Ko te mahi o te gyroscope muka, te waahanga matua o te gyroscope, te mowhiti muka, me pupuri atu i te puna wera.

Mo te gyroscope whakauru photoelectric, ko nga taputapu whakaahua hiko me nga papa taiawhio o te gyroscope e tata ana ki te mowhiti muka whatu.I te wa e mahi ana te puoro, ka piki ake te pāmahana o te taputapu ake ki etahi waahanga, ka pa ki te mowhiti muka whatu na roto i te rauropi me te kawe. Hei whakaoti i te awe o te pāmahana i runga i te mowhiti muka whatu, ka whakamahia e te punaha he wehenga whakaahua o te gyroscope muka whatu, tae atu ki te hanganga ara whatu me te hanganga ara iahiko, e rua nga momo o te hanganga wehe motuhake, i waenganui i te muka me te hononga aho arataki ngaru.Ka karohia te wera mai i te pouaka puna marama e pa ana ki te whakawhitinga wera o te muka.

3. Hiahia-i runga i te hoahoa rapu-whaiaro

Ko te punaha whakatere gyro strapdown fiber optic me whai i te mahi hiko-whaiaro mahi i runga i te taputapu inertial.Na te mea ka whakamahia e te punaha whakatere te whakaurunga strapdown parakore kaore he tikanga whakawhiti, ka oti te whakamatautau-whaiaro o nga taputapu inertial ma te inenga pateko i roto i nga waahanga e rua, ara. , whakamātautau whaiaro taumata-whakamatau me te whakamatautau-whaiaro taumata-puna, me te kore he whakaihiihi whakawhiti o waho.

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