干涉式光纤陀螺的电子线路中不可避免会产生延迟,使得输出增加噪声并影响陀螺精度。为了解决上述问题,讨论了光纤陀螺数字电路的延迟对输出的非线性影响,并提出了相应的改善其影响的设计方法。另外对于为了减小数模转换器非线性噪声而增加的输出滤波器,也进行了设计,并同时指出了改变平均算法形式或使用平均算法以外的滤波器时应注意的事项。通过精心设计,可以达到彻底消除延迟影响的目的。仿真结果表明由于延迟引起的输出噪声标准差可以限制到零。 Interfering fiber optic gyroscope electronic circuit will inevitably have a delay, making the output increase the noise and affect the gyro accuracy. In order to solve the above problems, the influence of the delay of digital gyroscope on the output nonlinearity is discussed, and the corresponding design method to improve its effect is proposed. In addition, the output filter added to reduce the nonlinear noise of the D / A converter is also designed. At the same time, some precautions should be taken when changing the average algorithm form or using a filter other than the averaging algorithm. Through careful design, you can achieve the purpose of completely eliminating the impact of delay. Simulation results show that the standard deviation of output noise due to delay can be limited to zero.