摘要
提出了光纤陀螺光纤环三维温度瞬态模型解析式,用于求解光纤环径向、轴向和周向温度瞬态效应所致的非互易性相位、速率和角度误差。相比传统的二维光纤环模型只能分析均匀径向温度瞬态效应,此三维模型改善了求解能力,提高了准确性。采用有限元方法数值求解三维温度瞬态模型解析式,得到了不同温度激励下的热致速率和角度误差。最后进行了光纤环温度激励的相应实验,实验结果与光纤环三维温度瞬态模型数值计算结果一致,验证了光纤环三维模型的准确性。
A three-dimensional（3-D） expression of the temperature transient model was presented for analyzing the nonreciprocal phase,rate and angular errors caused by the radial,axial and circumferential temperature transient effects in the fiber gyro coil.Compared with the traditional 2-D models only for modeling radial temperature transient effects,3-D model significantly improved the accuracy and the prior for the thermal gradients along different directions.The 3-D equations in the coil were solved by using the finite element method.The rate and angular errors of a fiber gyro caused by different thermal excitations were obtained.The corresponding experiments of thermal excitations of fiber coil were carried out.The result gives a proof of the effectiveness of the 3-D model for predicting the thermal transient effects of the fiber coils on the performance of fiber gyros.
出处
《红外与激光工程》
EI
CSCD
北大核心
2010年第5期929-933,共5页
Infrared and Laser Engineering
基金
国防预研基金资助项目(513090104)
关键词
热致非互易性
瞬态效应
光纤陀螺
光纤环
有限元分析
Thermal-induced nonreciprocity
Transient effect
Fiber optic gyros
Fiber coil
Finite element analysis
