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本文在研制要求高分辨力和动态性能的小过载加速度计时,在传统的液浮摆式基础上采用了压电支承。并用润滑和摩擦理论对在轴向正弦激励下支承转动方向的减摩机理进行分析,表明在支承的球枢轴和圆柱宝石眼之间存在着以流体动力油膜润滑为主的多种润滑状态。用雷诺方程和润滑理论的分析方法计算了间隙油膜厚度和承载能力,并用所设计的实验装置验证了润滑状态和测定了静、动摩擦力矩,从而确定了支承的工艺要求和最优参数,使所研制成的加速度计性能较传统的提高1～2个数量级。
In this paper, the development of high resolution and dynamic performance of small overload accelerometer, based on the traditional liquid float tilting based on piezoelectric support. The mechanism of anti-friction in the direction of axial rotation under axial sinusoidal excitation is also analyzed with the theory of lubrication and friction. It shows that there exists a variety of lubrication states mainly of hydrodynamic oil film lubrication between the supporting ball pivot and the cylindrical jewel eye. Reynolds equation and lubrication theory analysis method was used to calculate the thickness and carrying capacity of the clearance oil film. The experimental conditions were used to verify the lubrication condition and determine the static and dynamic frictional torques, so as to determine the technical requirements and optimal parameters of the bearing. Developed accelerometer performance than the traditional increase of 1 to 2 orders of magnitude.