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1、The Principle and Application of Ring Laser Gyro 1 Background Gyroscope: A sensor which has the ability to perceive the running speed and maintain the direction of the type. I Inertial components nertial components I Inertia measurementnertia measurement I Inertial navigation nertial navigation I In
2、ertial stabilization nertial stabilization I Inertial guidance nertial guidance Inertial device is the core of the inertial technology Traditional inertial gyro has a high requirement on the process structures, complex structure, and the precision is restricted. Ring laser gyro rotor rotating parts,
3、 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 gyro Fiber optic gyroRing laser gyro RLGs zero bias and scale factor of the system parameters are
4、 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 has some inherent drawbacks, such as mirrors, gas, and under the condition of low speed
5、 it is easy to closure. The precision of RLG is high , but the price also high. 1 Background 2 Basic principle Rotation free condition, two beams of light transmission time, which is, Under the condition of rotating, The time of two directions Transmission time Partial frequency components Cheng lon
6、g control component Signal readout system Ring laser Logic circuit The power component The installation structure Electromagnetic shielding cover, etc Constitute of the RLS The actual model -laser gyro relative interferometer 1 Background 2 Basic principle 3 Main application Most of the aircraft and
7、 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 Precision measurement reconnaissance vehicles All kinds of tactical and strategic missiles Small intercontinent
8、al ballistic missiles dwarf The Block III tomahawk cruise missile. Observe the tiny seismic effect and the solid ground tidal effect 1 Background 2 Basic principle 3 Main application 4 Research status The research status of abroad For the first time in 1963, the Sperry, the company successfully deve
9、loped 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 practical stage. Early 21st century, Litton company developed the mechanical dithering of four f
10、requency 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 indicators The domestic research status 1960s, The research started . In the late 70 s, tsinghua university, national university of defense tech
11、nology, 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 technology of manufacturing, technology is mature research unit of national university of defense technology and catic 618. THANKS