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结构材料对光纤陀螺动态性能的影响

, PP. 39-43

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Abstract:

光纤陀螺(FOG,Fiber-OpticGyroscope)在动态运用过程中输出易产生非互易性误差,分析FOG产生振动误差的原因,提出结构材料的性质对FOG动态性能有显著的影响.对作为FOG结构核心的本体采用不同结构材料,分别建立对应的FOG有限元模型,进行模态分析以及谐响应分析,定性分析结构材料的比刚度对FOG动态性能的影响,通过扫频振动和随机振动实验验证模型建立的正确性.结果表明,将比刚度高的铍铝材料替换铝合金材料应用在FOG本体上,能将FOG的一阶固有频率由1452Hz提高至2213Hz,可显著提高FOG的动态输出精度,并减小FOG整体质量,特别适用于轻小型FOG.

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