三浮陀螺磁悬浮干扰力矩机理分析

Mechanism analysis on magnetic suspension bearing disturbance moment in three-floated gyroscope

在三浮陀螺磁悬浮的干扰力矩研究方面,详细分析了磁悬浮干扰力矩的产生机理,对机加和装配误差、磁性材料的不理想、调试过程等可能造成的磁悬浮干扰力矩进行了定性分析和定量计算,推导出干扰力矩的表达式,并通过组合加工的方法对磁悬浮干扰力矩的力臂加以控制。目前的加工水平可以达到:径向磁悬浮干扰力矩1×10^(-8) N×m,对应的陀螺漂移8.4×10^(-2)(°)/h,随机分量4.2×10^(-6)(°)/h;轴向磁悬浮干扰力矩2×10^(-10) N×m,对应的陀螺漂移1.7×10^(-3)(°)/h,随机分量为8.4×10^(-8)(°)/h。

On the research of the disturbance moment of magnetic suspension bearings in three-floated gyroscope, the author analyzed the mechanism and carried on the qualitative analysis and quantitative calculation on the disturbance moment that might be caused by the error in the process of machining, and the un-ideal of the magnetic material, assemblage and debugging. The expression is deduced, and the force arm is restricted by the combining processing. Currently, it can be achieved that： the radial disturbance moment is l × 10^-8 N.m, the gyro drift is 8.4×10^-2 （°）/h, and the random component is 4.2×10^-6 （°）/h; the axial distur- bance moment is 2× 10^-1 N＇m, the gyro drift is 1.7 x 10-3 （°）/h, and the random component is 8.4 ×1^-8 （°）/h.