静电陀螺仪两种实心铍转子结构分析

Structural Analysis of Two Kinds of Solid Beryllium Rotors in Electrostatic Gyroscope

以提高静电陀螺仪实心铍转子的加工制造精度为目标,对运用数学及力学基础理论知识分析实心铍转子的结构精度进行了研究。首先介绍了静电陀螺仪实心铍转子的两种经典结构形式,然后利用高等机构学中的坐标变换原理分别对两种结构的转动惯量误差进行计算分析。计算结果表明:所提出的两种经典铍转子结构中,铍球内镶嵌三根空间内相互平行的钽丝转动惯量误差更小、结构精度更高。研究结果为静电陀螺仪实心铍转子结构形式的选择和实心转子的加工制造提供了重要的参考依据。

In order to improve the manufacturing accuracy of solid beryllium rotor of ESG,the structural accuracy of solid beryllium rotor was analyzed by using basic mathematical and mechanical knowledge.Firstly,two classical structures of solid beryllium rotor of electrostatic gyroscope are introduced.Then,the rotational inertia errors of the two structures are calculated and analyzed by using the coordinate transformation principle in higher mechanism.The calculation results show that in the two proposed classic beryllium rotor structures,three parallel tantalum wires embedded in the beryllium ball have smaller moment of inertia error and higher structural accuracy.The research results provide an important reference for the selection of solid beryllium rotor structure and the manufacture of solid beryllium rotor of electrostatic gyroscope.