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为了研究在地面环境下模拟分析空间用光纤陀螺输出特性,对光纤陀螺静态高速输出连续相同数据的特性展开了研究。通过对光纤陀螺系统建模,研究了前向增益与两种陀螺输出滤波器的特性。提出了一种计算光纤陀螺静态条件下输出连续相同数据概率的方法。通过理论计算、仿真、实验相结合的研究方法,相互验证了其正确性,发现陀螺输出连续五次相同的概率的量级为10-11,发生的概率极小,为空间应用光纤陀螺系统时钟故障诊断提供了参考。通过研究发现陀螺前向增益越小,越容易导致陀螺输出连续相同的数据;陀螺滤波器对陀螺输出连续相同数据的固有特性有重要的影响;平滑滤波器较FIR滤波器更容易导致输出连续相同的数据。
In order to study the output characteristics of optical fiber gyroscopes used in analog analysis space in the ground environment, the properties of continuous, identical and high-speed output of FOG are researched. By modeling the FOG system, the characteristics of forward gain and two kinds of gyro output filters are studied. A method of calculating the probability of outputting the same continuous data under the static condition of FOG is proposed. Through theoretical calculation, simulation and experimental research, the correctness of each other is verified. It is found that the same probability of gyroscope output for five consecutive times is in the order of 10-11, and the probability of occurrence is extremely small. Fault diagnosis provides a reference. It is found that the smaller the gyro’s forward gain is, the easier it is for the gyro to output the same continuous data. The gyro filter has an important effect on the inherent characteristics of the same gyro output. The smoothing filter can more easily output the same output than the FIR filter The data.