圆容栅角位移传感器设计

介绍了一种用发射电极和标尺电极来设计圆容栅角位移传感器的方法.通过分析电容传感器测量角位移的原理,将输出电压信号转换成脉冲信号,每一个脉冲信号代表一个确定的角位移,在一个固定角度内输出的脉冲数越多表示传感器的分辨率越高.在动栅盘上粘贴一些发射电极,在定栅盘上粘贴一些标尺电极.为了确保不在同一时间输出多个脉冲,发射电极和标尺电极的安装数目必须互质.同时为了保证脉冲间隔是均等的,还需要更多地考虑发射电极和标尺电极的安装数目,提供了一种设计圆容栅的新方法,有效地提高了角位移传感器的精度和分辨率.

Design of Circle Grid-Capacitance Sensor

This paper introduces a new method of designing circle grid-capacitance sensor with numbered emitter-poles and ruler poles.By analyzing the principle of capacitance sensor measuring the angle-displacement,this paper first provides a design idea that changes output voltage to pulse signal,and every pulse stands for a certain amount angle-displacement.And then for getting more pulses when object has been rotated a certain angle,that is,the sensor will has high resolution,there must be many emitter-poles affixed on moveable grid-disk and many ruler-poles affixed on fix grid-disk.To ensure there are no pulses occurring at the same time,the number of emitter-poles and that of ruler-poles must be prime number to each other at least.At the same time,to ensure that each pulse interval must be equal,the number of emitter-poles and that of ruler-poles must be considered furthermore.This technique provides a new idea for right design of circle grid-capacitance and for improving its precision and resolution.