【摘要】 通过分析重力测量精度与磁悬浮系统倾角及仪器支撑腿调节高度之间的关系,结合支撑腿支撑重量大、位移调节精度高的要求,确定采用交流伺服电机驱动高精度电动缸作为支撑腿进行重力仪倾角调平的方案。制作支撑腿调平系统并进行调平实验,倾角调节精度达0.002°,最小位移调节小至2.5μm,找到倾角最小位置,实现重力仪调平功能,同时验证重力测量精度与倾角间的关系,为超导重力仪的调平和高精度重力测量提供参考。更多还原

【Abstract】 By analyzing the relationship between gravity measurement accuracy and the tilt angle of the levitation system and the height of the supporting leg, and by considering the heavy weight of the supporting leg and the high precision of the displacement adjustment, we adopt a design of high precision electric cylinder driven by the AC servo motor servicing as support leg. By producing the support leg leveling system and doing a leveling experiment, the tilt measurement accuracy is 0.002°, the minimum displacement adjustment is as small as 2.5 μm, the smallest tilt angle position is found, the gravimeter leveling function is realized, and the relationship between gravity accuracy and tilt angle is verified. The experimental results provide a reference for the leveling work and high-precision gravity measurement of SG.更多还原