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抖动机构作为机抖激光陀螺的关键环节,其参数的选择直接影响着机抖激光陀螺的误差输出特性.为了在陀螺设计时选择最佳抖动参数,提高机抖激光陀螺的测量精度,根据抖动偏频的基本原理,对抖动参数对机抖激光陀螺的偏置误差、刻度因子误差、角度随机游走误差的影响进行了深入分析.结果表明:机抖激光陀螺的偏置误差随着抖动幅度的减小而减小;在一定范围内刻度因子误差随着抖动幅度的增大而增大,超出这个范围随着抖动幅度的增大而减小;减小抖动角幅度可减小角度随机游误差.
Jitter mechanism as the key part of the machine-shake laser gyro, the choice of parameters directly affect the error output characteristics of the machine-shake laser gyro.In order to select the best jitter parameters in the gyro design, improve the measurement accuracy of the jitter laser gyro, Frequency, the influence of jitter parameters on offset error, scale factor error and angle random walk error of jitter gyro is analyzed.The results show that the offset error of jitter laser gyro with jitter amplitude Decreases and decreases; within a certain range, the scale factor error increases with the jitter amplitude, beyond which the range decreases with the jitter amplitude; reducing the jitter angle amplitude can reduce the angle of random error .