CAJ | 학술논문

在绝对式小型光电编码器动态特性检测中，为了对匀速变速转动下编码器的高速误差进行数据采集，提出了编码器误差数据准确采集方法，并设计了绝对式光电编码器动态误差采集系统。首先，通过对被测编码器输出角度数据所表达真实角度准确时刻的分析，提出了编码器误差数据的准确采集时刻是在编码器输出数据变化的边沿时刻。然后，通过对误差采集时采集数据量、采集速度及传输速度的分析，确定了以FPGA+USB设计制作硬件电路，实现编码器误差数据的全分辨率采集。最后，通过计算机软件实现对误差数据的计算、显示和打印。经过实验，系统可以高速、准确地采集到快速转动下编码器所有角度的误差数据，能够满足小型绝对式光电编码器动态特性检测的要求。系统具有采集数据高速、准确等优点。可以实现对90 r/min以下转速的16位编码器的数据采集。
재절대식소형광전편마기동태특성검측중，위료대균속변속전동하편마기적고속오차진행수거채집，제출료편마기오차수거준학채집방법，병설계료절대식광전편마기동태오차채집계통。수선，통과대피측편마기수출각도수거소표체진실각도준학시각적분석，제출료편마기오차수거적준학채집시각시재편마기수출수거변화적변연시각。연후，통과대오차채집시채집수거량、채집속도급전수속도적분석，학정료이FPGA+USB설계제작경건전로，실현편마기오차수거적전분변솔채집。최후，통과계산궤연건실현대오차수거적계산、현시화타인。경과실험，계통가이고속、준학지채집도쾌속전동하편마기소유각도적오차수거，능구만족소형절대식광전편마기동태특성검측적요구。계통구유채집수거고속、준학등우점。가이실현대90 r/min이하전속적16위편마기적수거채집。
In order to solve high-speed data acquisition for rotating photoelectric encoder in the dynamic detection, the method of encoder angle data collection was proposed and the acquisition system of dynamic errors for absolute photoelectric encoder was designed. Firstly, it was proposed that the exact time of acquisition for error data was at the edge of data by the analysis of the exact time for the output of encoder. Secondly, the circuit was designed with FPGA and USB chips by the analysis of quantity, acquisition speed and transmission speed of error data. Finally, the computer software finished the calculation, displaying and printing. By the results of experiment, the system can collect the error data of rapid rotating encoder accurately, meanwhile suited for the detection of the dynamic characteristics for small absolute optical encoder. This system can achieve the data acquisition of 16 bits photoelectric encoder below the speed of 90 r/min accurately.