摘要
Y波导是数字闭环光纤陀螺的核心器件,其半波电压的稳定性直接影响光纤陀螺标度因数的稳定性。工作温度是影响Y波导半波电压稳定性的主要因素,从Y波导物理特性的理论推导和Y波导半波电压随温度变化的实验可以得到半波电压与温度近似成线性规律,实验中半波电压随温度变化线性拟合中产生的非线性误差主要受Y波导的外电场和机械应力的影响。通过对Y波导的半波电压进行标定补偿,使陀螺处于最佳调制状态,从而使其在整个工作温度内获得高稳定性的标度因数。
Y waveguide is a key component of digital closed-loop fiber optic gyroscope,and the stability of its half-wave voltage directly affects the scale factor stability of FOG.Working temperature is the main factor that influences on the stability of Y waveguide half-wave voltage.Theoretical deduction of Y waveguide physical properties and experiment of half-wave voltage changing along with temperature indicate that the relationship between half-wave voltage and temperature is nearly linear.The non-linear errors are induced by Y waveguide electric field and mechanical stress.Through calibrating the Y waveguide half-wave voltage and making compensation,the optimal modulation state of FOG can be achieved and highly stable FOG scale factor can be obtained.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2010年第2期449-453,共5页
Chinese Journal of Scientific Instrument
关键词
光纤陀螺
Y波导
半波电压
标度因数
fiber optic gyro
Y waveguide
half-wave voltage
scale factor
