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针对国内光纤陀螺的研究现状,为了快速适应惯性导航系统对高精度、高可靠性光纤陀螺的需求,采用了冗余配置的设计方案,设计了一种新型光纤陀螺组合支架。通过Ansys有限元分析软件对支架进行了动力学分析,并通过模态分析和频率响应分析对支架进行了优化。优化后的支架,质量减轻了43%,避免了在0~2 000 Hz的工作频带内出现谐振,对加速度的响应幅值明显降低,对形变的响应均小于10-7,有效提高了支架的动态特性,为提高惯性导航系统的精度和可靠性打下了良好的基础。
In order to meet the demand of high precision and high reliability fiber optic gyroscope (FOG) quickly in domestic research status of fiber optic gyroscope (FOG), a design scheme of redundant configuration is adopted and a new type of FOG composite holder is designed. The stent was analyzed by Ansys finite element analysis software and the stent was optimized by modal analysis and frequency response analysis. The optimized stent reduced the mass by 43%, avoided the resonance in the working frequency band from 0 to 2000 Hz, remarkably reduced the amplitude of response to acceleration and less than 10-7 responses to deformation, effectively improving the stability of the stent Dynamic characteristics, in order to improve the accuracy and reliability of inertial navigation system has laid a good foundation.