摘要
针对旋转变压器输出数据存在的角度误差问题,对旋转变压器校正方法进行了研究,设计并实现了旋转变压器角度误差校正系统。该系统充分利用了旋转变压器工作原理,发挥了光电编码器优势,采用了FPGA和ARM的优点,由同一电机带动光电编码器和被测旋转变压器,以FPGA+ARM组成的控制模块读出光电编码器和被测旋转变压器的角度,并进行比较分析,测量旋转变压器的非线性误差,建立误差分析表,提出了一种根据系数进行补偿的方式,对旋转变压器的误差进行了补偿。研究结果表明,该系统能对旋转变压器的输出数据进行校正,校正前旋转变压器的角度误差最大为21.2弧分,通过该系统校正后,测角误差最大为5.3弧分,系统校正速度较快且效果明显。
Aiming at the angle error problem of the data output by resolver,the correction method of resolver was studied,and a correction system based on FPGA was proposed and designed. The system based on the encoder was combined with FPGA and ARM. A photoelectric encoder and a resolver were driven by the same motor,and the angle between photoelectric encoder and resolver was measured by a control model which was consisted of ARM and FPGA. Data and measured nonlinear errors of the encoder and resolver were analyzed and compared.The error analysis table was established,and the compensation of errors based on coefficient was applied. The experimental results indicate that the system can correct the output data of the resolver. Before correction,the largest angle error of resolver is 21. 2 arc min,which reduces to 5. 3 arc min after correction. The correction method is effective and the correction speed is fast.
出处
《机电工程》
CAS
2016年第9期1140-1143,1153,共5页
Journal of Mechanical & Electrical Engineering
基金
国家科技支撑计划项目(2014BAH28F04)
湖南省教育厅科学研究重点项目(15K009)
