光纤陀螺光纤环Shupe效应的三维有限元模型 |
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引用本文: | 李茂春,刘铁根,王佳佳,侯丽丽,周友伟,江俊峰,姚晓天. 光纤陀螺光纤环Shupe效应的三维有限元模型[J]. 天津大学学报(自然科学与工程技术版), 2008, 41(5): 601-606 |
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作者姓名: | 李茂春 刘铁根 王佳佳 侯丽丽 周友伟 江俊峰 姚晓天 |
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作者单位: | 天津大学光电信息技术科学教育部重点实验室,天津300072 |
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基金项目: | 天津市应用基础研究项目 |
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摘 要: | 针对传统二维热致非互易光纤环模型的局限性,建立了光纤环柱面坐标三维计算模型,可分析光纤环径向、轴向和周向温度不均匀变化导致的热致误差速率和热致误差角度.采用有限元方法对光纤环三维物理模型进行数值仿真,定量分析由温度激励造成的热致误差速率和热致误差角度.开展了光纤环温度激励实验,对比仿真和实验结果,验证了光纤环三维物理模型的有效性.并将光纤环三维计算模型成功地应用于光纤陀螺(FOG)纤环瞬态特性检测方法所用的温度激励源设计.
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关 键 词: | Shupe效应 热致非互易性 光纤陀螺 光纤环 有限元 |
Three- Dimensional Finite Element Model of Shupe Effect in FOG Fiber Coil |
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Affiliation: | LI Mao-chun, LIU Tie-gen, WANG Jia-jia, HOU Li-li, ZHOU You-wei, JIANG Jun-feng, X Steve Yao ( Key Laboratory of Opto-Electronics Information and Technical Science of Ministry of Education, Tianjin University, Tianjin 300072, China ) |
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Abstract: | To overcome the limitations of the traditional two-dimensional thermal induced nonreciprocity fiber coil model, we developed a computational three-dimensional ( 3-D ) fiber coil model to describe rate and angular error generation through dynamically changing thermal inhomogeneities along the radial, axial and circumferential direc- tions in the fiber coil. With finite element analysis, numerical simulations were carded out to quantitatively analyze the rate and angular error induced by temperature excitation. We then validated the 3-D model by comparing numerical and experimental results. Moreover, the computational 3-D fiber coil model was successfully applied to the design of temperature excitation device used in the transient characteristic testing method of fiber optic gyroscope ( FOG ) fiber coil. |
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Keywords: | Shupe effect thermal induced nonreciprocity fiber optic gyros cope fiber coil finite element |
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