激光陀螺仪的原理与应用

1、2021/6/161The Principle and Applicationof Ring Laser Gyro2021/6/1621Background2021/6/163Gyroscope: A sensor which has the ability to perceive the running speed and maintain the direction of the type.2021/6/164 Inertial device is the core of the inertial technology 2021/6/165 Traditional inertial gyr

2、o has a high requirement on the process structures, 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, h

3、igh reliability.Traditional gyroRing laser gyro2021/6/166Fiber 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 o

4、f FOG on the surrounding environment sensitiver than RLG. RLG 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.2021/6/1671Background2Basic principle2021/6/168cRcLttCWCCW2Rotation free

5、 condition, two beams of light transmission time, which is,Under the condition of rotating,2021/6/169RcRtCCW2RcRtCW2 The time of two directions224cRtttCWCCW Transmission time2021/6/1610Partial frequency componentsCheng long control componentSignal readout systemRing laserLogic circuitThe power compo

6、nentThe installation structureElectromagnetic shielding cover, etcConstitute of the RLS2021/6/1611 The actual model -laser gyro relative interferometer2021/6/16121Background2Basic principle3Main application2021/6/1613 Most of the aircraft and civil aviation abroad F - 22, F - 35, SU - 30 aircraft, B

7、747 and A320 civilian planes Conventional weapons such as tanks, artillery Latin howitzer Swedish BKAN1A and FH - 77 - b howitzers Precision measurement reconnaissance vehicles All kinds of tactical and strategic missiles Small intercontinental ballistic missiles dwarf The Block III tomahawk cruise

8、missile. Observe the tiny seismic effect and the solid ground tidal effect2021/6/16141Background2Basic principle3Main application4Research status2021/6/1615The research status of abroadFor the first time in 1963, the Sperry, the company successfully developed the ring laser gyro.In 1975, Honeywell c

9、ompany developed the mechanical dithering frequency laser gyro, adopting the technology of laser gyro strapdown inertial navigation system truly entered the practical stage.Early 21st century, Litton company developed the mechanical dithering of four frequency differential laser gyro, the precision

10、can reach 0.001 / h.Now Honeywells latest GG1389 precision of laser gyro has amounted to 0.00015 / h.2021/6/1616Main indicators2021/6/1617The domestic research status1960s, The research 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, with mirror induced some key