摘要
为改善静电陀螺仪球形空心转子的动态圆度,将转子静态时设计成两极长、赤道短的长球形,以补偿由离心载荷引起的两极向内收缩、赤道向外膨胀产生的圆度误差。首先,根据弹性力学薄壳理论的载荷弹性变形计算公式,应用小变形独立作用与合成原理,构建了静电陀螺仪空心转子表面径向载荷的径向变形与离心载荷的径向变形的迭加计算公式。然后,按该迭加计算公式构造了两极长、赤道短的长球形空心转子。最后,以示例对构造的长球形空心铍转子的设计、加工、测量进行了说明。实验结果表明:该加工后的长球形空心铍转子的极点半径比赤道半径长0.52μm,与设计值0.54μm相吻合。
For improving the dynamic roundness of the sphere hollow rotor in an electrostatic gyro, a rotor was designed to be a long sphere with long-polarized and short-equatorial diameters in a static state to compensate the roundness error caused by the centrifugal load. According to the load elastic distortion formula from the elasticity shell theory, the superposition formula of surface distortions produced by the radial load and the centrifugal load for hollow Be rotor in the Electrostatic Suspended Gyroscope（ESG） was established by using the small distortion independent action and synthesis theory. Then, a long spherical hollow Be rotor with long-polarized and short-equatorial diameters was constructed by the superposition formula. Finally, a sample was taken to explain the design, process- ing and survey of the long spherical hollow rotor. Experimental results indicate that the polar radius of the long spherical hollow Be rotor is 0.52 μm longer than equator radius, which is well coincident with the design value of 0.54 μm.
出处
《光学精密工程》
EI
CAS
CSCD
北大核心
2009年第9期2206-2211,共6页
Optics and Precision Engineering
基金
国防科工委十一五预研基金资助项目(No.51350202)
关键词
静电陀螺仪
球形空心转子
长球形空心转子
electrostatic suspended gyroscope
spherical hollow rotor
long-spherical hollow rotor
