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本文从静电陀螺捷联系统应用方案考虑,用有限元法分析我国现有结构静电陀螺空心转子离心变形,转子结构模型的内表面由赤道环、过渡圆和圆球面三部分组成,外表面为椭球面.按支承电极的实际情况,推导了全姿态读取时离心变形中高次谐波产生的电场干扰力矩的表达式.仿真结果表明,现结构静电陀螺仪组成捷联系统,高次谐波将严重影响系统精度的提高,必须在干扰力矩模型中予以补偿.
In this paper, considering the application scheme of the electrostatic gyro strapdown system, the finite element method is used to analyze the centrifugal deformation of the hollow rotor of the electrostatic gyro in our country. The inner surface of the rotor structure model is composed of three parts: the equatorial ring, the transitional circle and the spherical surface. Spherical surface.According to the actual situation of support electrode, the expression of electric field disturbance torque generated by high-order harmonic in centrifugal deformation during the whole attitude reading is deduced.The simulation results show that the existing structure of electrostatic gyroscope consists of strapdown system, higher harmonic Seriously affect the improvement of system accuracy, must be compensated in the torque model.