天津工业大学学报
天津工業大學學報
천진공업대학학보
Journal of Tianjin Polytechnic University
2015年
5期
81-84
,共4页
光纤陀螺仪%随机噪声%随机游走系数%闭环传递函数
光纖陀螺儀%隨機譟聲%隨機遊走繫數%閉環傳遞函數
광섬타라의%수궤조성%수궤유주계수%폐배전체함수
fiber optic gyroscope%random noise%random walk coefficient%closed-loop transfer function
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φb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.
分彆對影響陀螺儀性能的各種譟聲進行瞭分析.利用閉環傳遞函數,建立瞭隨機譟聲模型,繫統地研究瞭探測器接收光功率、偏置點和探測器跨阻抗與光纖陀螺儀隨機遊走繫數(RWC)之間的關繫.根據對隨機遊走繫數模型的分析,選擇瞭光學組件,組裝成陀螺儀併對陀螺儀的參數進行瞭優化設計.得齣陀螺儀的主要參數:探測器跨阻抗Rf為80 kΩ;光功率I0為100μW;相對偏置點φb為4π/5.將計算齣的RWC理論值與利用Allan方差法得到的實際測量值進行瞭比較,驗證瞭隨機遊走繫數模型的正確性.
분별대영향타라의성능적각충조성진행료분석.이용폐배전체함수,건립료수궤조성모형,계통지연구료탐측기접수광공솔、편치점화탐측기과조항여광섬타라의수궤유주계수(RWC)지간적관계.근거대수궤유주계수모형적분석,선택료광학조건,조장성타라의병대타라의적삼수진행료우화설계.득출타라의적주요삼수:탐측기과조항Rf위80 kΩ;광공솔I0위100μW;상대편치점φb위4π/5.장계산출적RWC이론치여이용Allan방차법득도적실제측량치진행료비교,험증료수궤유주계수모형적정학성.
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=100μW,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.