| 捷联惯导减振器参数估计与光纤环应力响应分析 |
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| 引用本文： | 田勇,章博.捷联惯导减振器参数估计与光纤环应力响应分析[J].机械设计与制造,2011(1). |
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| 作者姓名： | 田勇 章博 |
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| 作者单位： | 北京航空航天大学光电技术研究所,北京,100191 |
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| 摘 要： | 建立了捷联惯导系统的有限元模型,提出用单自由度弹簧振子模型估计减振器的刚度和阻尼系数的方法,并得到实验的验证。提出用一维系统低频逼近多自由度解耦系统的近似分析方法。解释了陀螺随机振动响应曲线高频波动的原因。分析了光纤环的材料刚度和几何参数对其内应力的影响规律。
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| 关 键 词： | 光纤陀螺 有限元 减振器参数 光纤环内应力 |
Parameters estimate for damper of strap-down inertial navigation system and stress analysis of optic-fiber rings |
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| TIAN Yong,ZHANG Bo.Parameters estimate for damper of strap-down inertial navigation system and stress analysis of optic-fiber rings[J].Machinery Design & Manufacture,2011(1). |
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| Authors: | TIAN Yong ZHANG Bo |
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| Affiliation: | TIAN Yong,ZHANG Bo(BeiHang University Photoelectric Technology Institute,Benjing 100191,China) |
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| Abstract: | FEM model of strap-down inertial navigation system is established.Besides,an approach of estimating damper's stiffness and dampness coefficient is introduced,with single degree of freedom spring-mass model,and the simulation agrees with the experiment result.Other than,an approximate analysis method is studied,using one dimensionality system to analyze the multi-DOF decouple system in low-frequency band,and it explains the reason of hi-frequency fluctuation in the response curve of FOG's random vibration.Fi... |
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| Keywords: | Fiber optic gyroscope Damper FEM Internal stress |
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