倾斜气垫导轨上空气黏性系数的测量

Measurement of Air Viscosity Coefficient on Inclined Air Cushion Guide

从气垫导轨上的实验出发,指出目前气垫导轨上空气黏性系数测定方法存在的问题,即重力加速度的计算中使用气垫导轨水平时测出的空气黏性系数。推导出了倾斜气垫导轨上空气黏性系数的表达式,通过实测、计算、作图并进行曲线拟合,结果表明,空气黏性系数随垫块高度增加而增加,并呈近似线性变化。

Based on the experiment on the air-cushion guide rail,this paper points out the problems existing in the current air viscosity coefficient measurement method on the air-cushion guide rail,that is,the air viscosity coefficient measured when the air-cushion guide rail is used in the calculation of the gravity acceleration.The expression of the air viscosity coefficient on the inclined air cushion guide is derived.Through the actual measurement,calculation,drawing and curve fitting,the results show that the air viscosity coefficient increases with the increase of the height of the block and changes approximately linearly.