摘要
分别对影响陀螺仪性能的各种噪声进行了分析.利用闭环传递函数,建立了随机噪声模型,系统地研究了探测器接收光功率、偏置点和探测器跨阻抗与光纤陀螺仪随机游走系数(RWC)之间的关系.根据对随机游走系数模型的分析,选择了光学组件,组装成陀螺仪并对陀螺仪的参数进行了优化设计.得出陀螺仪的主要参数:探测器跨阻抗Rf为80 kΩ;光功率I0为100μW;相对偏置点准b为4π/5.将计算出的RWC理论值与利用Allan方差法得到的实际测量值进行了比较,验证了随机游走系数模型的正确性.
A variety of noise affecting gyro was analyzed. In addition, by using the closed-loop transfer function, the ran- dom noise model was established to systematically investigate the relationship between the detector receiving light intensity, bias operating point, the detector trans-impedance and fiber optic gyro random walk coefficient （RWC）. Furthermore, the characters of the gyro was optimized. It is found that the main parameters of gyro are Rf = 80 kΩ, I0 = 100 μW, φb=4π/5. By comparing the theoretical values calculated by RWC with the actual measured values obtained by Allan variance, the correctness of the random walk coefficient model was verified.
出处
《天津工业大学学报》
CAS
北大核心
2015年第5期81-84,共4页
Journal of Tiangong University
基金
国家自然科学基金资助项目(61304252)
关键词
光纤陀螺仪
随机噪声
随机游走系数
闭环传递函数
fiber optic gyroscope
random noise
random walk coefficient
closed-loop transfer function
