This paper researched dynamic characteristics of internal and external bracket , the carrier of laser gyro , and compared kinds of scheme of structural design applying theory of structure dynamic design and theory of optimal design and analyzed natural characteristics of internal and external bracket applying ansys finite element analysis software . and use experimentation to validate this analysis result 本文深入研究了激光陀螺仪的载体? ?内外支架结构的动态特性，应用结构动态设计理论及优化设计理论比较了各种设计方案，运用了有限元法分析了内外支架结构的强度和刚度，利用有限元动力分析软件ansys计算得到内外支架结构的固有频率和振型，并通过试验模态分析的方法进行验证。
First , this paper analyses the shortage of the traditional lifetime predict method , such as accelerate lifetime test , to the rlg which is a kind of long lifetime products . then , a new lifetime predict method to the rlg is brought forward based on the study of the failure mechanisms , which are the internal causes of the failure 本论文首先分析了传统的寿命预测方法? ?加速寿命试验应用于激光陀螺仪这种长寿命产品的寿命预测时所存在的不足;然后,从影响激光陀螺仪寿命的内因? ?失效机理出发,提出了一种新的激光陀螺寿命预测方法。
The ring laser gyro ( rlg ) is a new photoelectric inertia sensor based on the optic interference theory . it uses the difference between the frequency of the two beams of light , which run in the opposite direction in the resonant cavity , to measure the carrier ’ s rotate speed and the orientation in the inertial space 环形激光陀螺仪( ringlasergyro ,简称rlg )是以光学干涉原理为基础发展起来的新型光电惯性敏感仪器,它利用环形谐振腔内顺、逆运行的两束光的谐振频率差来测量载体对于惯性空间的转速和方位。
