环形激光陀螺仪的机械抖动控制及信号读出的研究

Research on dither control and signal readout of ring laser gyros

环形激光陀螺仪（ＲＬＧ）的控制电路和信号处理方法直接影响着ＲＬＧ的使用精度及净信号输出频率等性能。为研究通过改进控制电路和采用信号处理来提高ＲＬＧ精度和改善其动态性能，满足惯性测量组合（ＩＭＵ）使用要求，本文研究了一种新的Ｌ－１型ＲＬＧ控制电路，并在此基础上，实现了高频采样；本文还介绍了一种高频采样中去除抖动的方法，以及相关信号处理技术。实验结果表明，本文电路和信号处理技术，改善了ＲＬＧ的信号使用精度，提高了其角速度信号输出频率，改善了Ｌ－１型ＲＬＧ的动特性。

The control electronics and the signal processing for ring laser gyro (RLG) influence its accuracy and other performances, such as the dynamic capability etc. In order to satisfy the need for the inertial measurement unit (IMU), the methods to improve the accuracy and dynamic capability of L 1 RLG are researched. A new developed control electronics for the L 1 RLG is introduced, a high frequency sampling system for the RLG is realized on the basis of this electronics, and a method of digital signal processing for filtering dither motion is investigated. As shown by the experimental results, the accuracy of the L 1 RLG is improved, and the sampling frequency is increased.