基于FPGA的双通道旋转变压器测角系统设计  

Design of Angle Measurement System of Two-Channel Rotary Transformer Based on FPGA

作　　者：甘戈 熊伟(导师)[1] 吴洋 刘占才 刘景岩 朱双双 GAN Ge;XIONG Wei;WU Yang;LIU Zhancai;LIU Jingyan;ZHU Shuangshuang(Key Laboratory of Optical Calibration and Characterization,Anhui Institute of Optics and Fine Mechanics,HFIPS,Chinese Academy of Sciences,Hefei 230031,China;University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]中国科学院合肥物质科学研究院安徽光学精密机械研究所,中国科学院通用光学定标与表征技术重点实验室,安徽合肥230031 [2]中国科学技术大学,安徽合肥230036

出　　处：《大气与环境光学学报》2021年第4期365-372,共8页Journal of Atmospheric and Environmental Optics

基　　金：民用航天技术预先研究项目,D040102。

摘　　要：设计了用于星载设备的双通道多对极旋转变压器的角度测量系统。以获取高精度的电机旋转角度值为目的,在旋转变压器测角工作原理、误差分析以及双通道数据组合算法和测角系统软硬件设计等方面进行了研究,并选用FPGA对步进电机的角位移量进行探测与解算。为验证所设计的双通道旋变角度测量系统的精度,采用了分辨率更高的海德汉光电编码器进行同时采集,并将两者数据进行对比,结果表明新设计的测角系统误差小于30",满足设计精度指标。An angle measurement system of a two-channel rotary transformer for spaceborne equipment is designed.For the purpose of obtaining high precision motor rotation angle value,the principle,error analysis,data combination algorithm and the software and hardware design of the angle measurement system are studied,and FPGA is used to detect and calculate the angular displacement of the stepping motor.In order to verify the accuracy of the designed two-channel angle measurement system,a Heidenhain photoelectric encoder with higher resolution is used to collect the data at the same time.By comparing the two data,it is shown that the error of the designed angle measurement system is within 30",which meets the design accuracy requriements.

关 键 词：现场可编程逻辑门阵列 双通道旋转变压器 测角技术 精度验证 

分 类 号：P414[天文地球—大气科学及气象学]