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1、the principle and applicationof ring laser gyro1backgroundgyroscope: a sensor which has the ability to perceive the running speed and maintain the direction of the type. inertial device is the core of the inertial technology traditional inertial gyro has a high requirement on the process structures,
2、 complex structure, and the precision is restricted. ring laser gyro rotor rotating parts, not angular momentum, ring frame, also do not need direction angle sensor moving parts, such as simple structure, long working life, convenient maintenance, high reliability.traditional gyroring laser gyrofibe
3、r optic gyroring laser gyro rlgs zero bias and scale factor of the system parameters are stability compared with fog, so the calibration difficulty relatively easy. the optical path of rlg must be kept in a solid component, so the degree of fog on the surrounding environment sensitiver than rlg. rlg
4、 has some inherent drawbacks, such as mirrors, gas, and under the condition of low speed it is easy to closure. the precision of rlg is high , but the price also high.1background2basic principlecrclttcwccw2rotation free condition, two beams of light transmission time, which is,under the condition of
5、 rotating,rcrtccw2rcrtcw2 the time of two directions224crtttcwccw transmission timepartial frequency componentscheng long control componentsignal readout systemring laserlogic circuitthe power componentthe installation structureelectromagnetic shielding cover, etcconstitute of the rls the actual mod
6、el -laser gyro relative interferometer1background2basic principle3main application most of the aircraft and civil aviation abroad f - 22, f - 35, su - 30 aircraft, b747 and a320 civilian planes conventional weapons such as tanks, artillery latin howitzer swedish bkan1a and fh - 77 - b howitzers prec
7、ision measurement reconnaissance vehicles all kinds of tactical and strategic missiles small intercontinental ballistic missiles dwarf the block iii tomahawk cruise missile. observe the tiny seismic effect and the solid ground tidal effect1background2basic principle3main application4research statust
8、he research status of abroadfor the first time in 1963, the sperry, the company successfully developed the ring laser gyro.in 1975, honeywell company developed the mechanical dithering frequency laser gyro, adopting the technology of laser gyro strapdown inertial navigation system truly entered the
9、practical stage.early 21st century, litton company developed the mechanical dithering of four frequency differential laser gyro, the precision can reach 0.001 / h.now honeywells latest gg1389 precision of laser gyro has amounted to 0.00015 / h.main indicatorsthe domestic research status1960s, the re
10、search started .in the late 70 s, tsinghua university, national university of defense technology, the first optical instrument factory in suzhou, china academy of sciences, 303.90 years later, the relevant institute successively carried out research work of gyro temperature characteristics and modeling error compensation.at present,
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