上海交通大学学报

上海交通大学学报（自然版） ›› 2012, Vol. 46 ›› Issue (08): 1274-1279.

• 交通运输 • 上一篇    下一篇

激光陀螺动态特性研究（二）  

 程耀强1a, 徐德民1a, 1b, 万彦辉2, 刘明雍1a   

  1. （西北工业大学1a．航海学院； 1b．水下信息处理与控制国家重点实验室，西安 710072；2.中国航天科技集团公司九院第十六研究所，西安 710100）
  • 收稿日期:2011-09-20 出版日期:2012-08-31 发布日期:2012-08-31
  • 基金资助:

    国家自然科学基金资助项目（50979093）

Research on the Dynamic Characteristics of Laser Gyroscope（Ⅱ）

 CHENG  Yao-Qiang-1a, XU  De-Min-1a, 1b , WAN  Yan-Hui-2, LIU  Ming-Yong-1a   

  1. （1a. School of Marine Engineering; 1b. National Key Laboratory for Underwater Information Process & Control，Northwestern Polytechnical University, Xi’an 710072, China；2. The 16th Institute, Chinese Aerospace Science and Technology Corporation，Xi’an 710100, China）
  • Received:2011-09-20 Online:2012-08-31 Published:2012-08-31

摘要： 针对激光陀螺动态特性中的相频特性，分析了相位延迟对导弹控制系统实时性和机动性的影响，并指出隔振器不会引入相位延迟，而有限冲击响应(FIR)滤波是造成激光陀螺相位延迟的主要因素.基于角振动台和惯性测量装置（IMU）台体，设计了4个试验状态，采用正弦激励法对激光陀螺的相频特性进行了实际测试.测试结果表明，隔振器的延迟时间最大不超过0.051 ms，延迟时间主要来自FIR滤波，符合理论分析结果   

关键词: 激光陀螺, 惯性测量装置, 时延, 有限冲击响应, 角振动台

Abstract: According to the laser gyro’s phase frequency characteristics this paper analyzed the influence of phase delay on realtime and mobility of missile control system, then studied the factors that cause phase delay of laser gyro, and pointed out that the vibration isolator does not bring phase delay, and FIR filter is the main factor for phase delay of laser gyro.Based on the angle vibration table and inertial measurement unit(IMU) body, four test states were designed and a practical test with phase frequency characteristics of laser gyro was conducted  using sine excitation method. The test results show that the vibration isolator’s delay time is no more than 0.051 ms and the delay time mainly comes from FIR filter, which is in accord with the theoretical analysis results.  

Key words: laser gyro, inertial measurement unit (IMU), delaytime, finite impulse response(FIR), angular vibration table

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