测控技术2018，Vol.37Issue(2)：38-41,46,5.
基于FPGA的旋转变压器CORDIC解码算法的研究
Research on CORDIC Decoding Algorithm of Resolver Based on FPGA
吴洋 1郭来功 1李桂阳1
作者信息
- 1. 安徽理工大学电气与信息工程学院,安徽淮南232001
- 折叠
摘要
Abstract
In order to solve these problems that the measurement accuracy of the resolver decoding system is not high,the decoding period is long,and the FPGA resources are occupied too much,an improved coordinate rotation digital computer(CORDIC) decoding algorithm for pipeline transformer was designed.By analyzing the characteristics of the arctangent function,the angle transformation was conducted for the output signal of the resolver,and all the measurement angles were extended.The complex trigonometric functions in the CORDIC decoding algorithm were transformed into a series of simple shift and summation operations.The algorithm uses FPGA as the hardware carrier and adopts Verilog HDL language.The results show that the accuracy of improved CORDIC decoding algorithm can achieve 1％,and the dynamic response is less than 1 μs,which satisfy the demands of high precision and low delay of the motor speed measurement.It is of great value to the research and application of the motor speed in complex environment.关键词
旋转变压器/CORDIC算法/角度变换/现场可编程门阵列Key words
resolver/CORDIC algorithm/angle transformation/FPGA分类
信息技术与安全科学引用本文复制引用
吴洋,郭来功,李桂阳..基于FPGA的旋转变压器CORDIC解码算法的研究[J].测控技术,2018,37(2):38-41,46,5.
