基于双频激光干涉仪的角速率检测系统精度分析
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摘要
为了能够精确检测到测试转台在低速运行下的角速率,设计了一种基于双频激光干涉仪的角速率精度检测系统。首先,对本检测系统各项误差进行机理分析。然后,综合各项误差项建立总体相对误差模型。最终,通过仿真分析得到各个误差因子对相对误差项的影响,为保证检测系统相对精度提供理论依据,能够满足对高精度惯性器件测试转台低速段0.0001(°)/s~1(°)/s速率检测要求。
In order to accurately measure angular rate of the test turn-table running at low speeds, an angular rate measurement system based on dual-frequency laser interferometer is designed. Therefore. the mechanism of the errors of the detection system is analyzed. Then, its whole error model integrating relative error terms is established. Finally, calculated by simulation, the influence of error factors to relative error terms is obtained. The theory basis for ensuring measurement systematic accuracy is provided. At last, when high precision inertial components test turntable is running at low speed of0. 0001(o)/s~1(°)/s,angular rate measurement is achieved.
In order to accurately measure angular rate of the test turn-table running at low speeds, an angular rate measurement system based on dual-frequency laser interferometer is designed. Therefore. the mechanism of the errors of the detection system is analyzed. Then, its whole error model integrating relative error terms is established. Finally, calculated by simulation, the influence of error factors to relative error terms is obtained. The theory basis for ensuring measurement systematic accuracy is provided. At last, when high precision inertial components test turntable is running at low speed of0. 0001(o)/s~1(°)/s,angular rate measurement is achieved.
引文
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[10]何京微,许素安,谢敏,等.基于LabVIEW的激光双频外差干涉纳米位移测量系统[J].测控技术,2014,33(5):31-34.HE Jing-wei,XU Su-an,XIE Min,et al.A heterodyne interferometric nanometric displacement measurement system based on Lab VIEW[J].Measurement&Control Technology,2014,33(5):31-34.
[2]羡一民,俞成栋,于光华,等.双频激光干涉仪在机床检定中的应用[J].制造术与机床,1995(5):8-11+3.XIAN Yi-min,YU Cheng-dong,YU Guang-hua,et al.Application of dual frequency laser inteferometer in machine checking[J].Manufacturing Technology&Machine Tool,1995(5):8-11+3.
[3]钟声远.关于角体合作目标性质的理论计算[J]激光与红外,1973,3(12):1-15.ZHONG Sheng-yuan.Theoretical calculation of the nature of the cooperative target[J].Laser&Infrared,1973,3(12):1-15.
[4]Zurasky J L.Cube corner retroreflector test and analysis[J],Applied Optics,1976,15(15):445-452.
[5]何川,,林家明,邹桂兰,,等.双频激光干涉测角中角锥镜的不对称性对测角精度影响的分析[J].光学技术,2007,33(S1):289-290+292.HE Chuan,LIN Jia-ming,ZOU Gui-lan,et al.Effect of optical corner cubes'asymmetry on angle measurement[J].Optical Technique,2007,33(S1):289-290+292.
[6]JJCG 998-2005,激光小角度测量仪[S].北京:中国标准出版社,2005.JJG 998-2005,Laser small angle measuring instrument[S].Beijing:China Standard Press,2005.
[7]Huang L H,Li S,Zhou H.A method for measuring the active reflecting area of the cube corner prism and its error analysis[J].Journal of Geomatics,2005,30(1):45-47.
[8]Chen H,Tan J B.Effect of beam incident angles on trihedral corner reflector laser ranging[J].Journal of Optoelectronics Laser,2006,17(8):986-988.
[9]Ullrich D,Lubcck E,Wetzig V.Static and dynamic angularmeasurements with a ring laser gyro[C].Symposium Gyro Technology,Sutttgart,Germany,1988:150-159.
[10]何京微,许素安,谢敏,等.基于LabVIEW的激光双频外差干涉纳米位移测量系统[J].测控技术,2014,33(5):31-34.HE Jing-wei,XU Su-an,XIE Min,et al.A heterodyne interferometric nanometric displacement measurement system based on Lab VIEW[J].Measurement&Control Technology,2014,33(5):31-34.
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