环形激光陀螺测试技术的研究与设计

Research and Design on Testing Technology of Ring Laser Gyroscope

针对某环形激光陀螺传感器的总体输出误差特点,应用Allan方差法完成了对RLG频域输出误差的建模评估,包括陀螺的随机游走误差、零偏稳定性误差,以及马尔可夫噪声误差等,建立了温度误差零偏补偿模型。在陀螺测试过程中,采用了转台交差逆转的方法,尝试将零偏衰减中的常值漂移和线性漂移部分自动补消,结果表明可以改善传统的RLG转台测试法的测试精度。

Applied Allan variance to analyze the ring laser gyro＇s（RLG） global error which based on the RLG output error characteristic,the modeling and collectivity evaluation in RLG＇s frequency domains which includes random walk error,bias stability error and Markov random yawp error etc.,are completed,and the bias compensation model because of temperature based on Allan variance evaluation result of RLG＇ s errors is set up.In the RLG testing procedure,using the method which turns alternatively gyroscopic testing platform can eliminate constant excursion and linearity excursion in bias excursion.The experiment result indicates that it can advance accurately measure of RLG turntable testing by tradition method.Allan variance method is easy to deal with RLG output data.