水平姿态测量用加速度计的环境适应性设计

Environment adaptability design of leveling accelerometer

为适应高冲击和随机振动的使用环境，对由双轴石英加速度计构成的水平姿态测量装置，给出了基于三梁单岛悬臂梁结构和双梁单岛悬臂梁结构的加速度计支承结构和固有频率的设计方法，并对设计结果进行了有限元分析和振动冲击试验验证。结果表明：利用该设计方法设计的加速度计结构，对随机振动和高冲击的使用环境具有良好的环境适应性，能够承受持续时间3ms的110g。冲击和0～2kHz的随机振动，测量精度优于0．02°。

In order to adapt to the environment of random vibration and high shock, for the leveling equipment based on 2-axis quartz accelerometer, a design method of the support structure and inherent frequency of the accelerometer which has the structure of three beam single isle and double beam single isle is introduced, and the design result is analyzed by finite element method and proved by vibration and shock examination. The results show that the accelerometer structure designed by this method can adapt the environment of random vibration and high shock well and the measurement accuracy is 0.02°after the random vibration 0 ～2 kHz and 1 10g,, shock for 3 ms.