摘要
提出了一种基于FPGA的多路增量编码器测角电路设计方案,它主要由4倍频电路、方向判别电路和计数电路组成。计数采用单时钟,能输出表示光电编码器位置的12位数字量和旋转方向指示电平。整个电路设计在Altium Desig-ner 6.0软件环境下由电路图和VHDL编程混合输入,采用Xilinx公司的XC25300E-6PQ208C型芯片进行仿真验证。仿真和实现结果验证了该方案可应用于高转速下的多路测角系统。
A design scheme of angle measurement circuit for multi- clannel incremental encoder based on FPGA is interoduced,which is composed of 4 multiple frequency,direction- judgment and counter circuit. The circuit produces 12 bit digital signals for angles and one signal for direction. The design is completed in Altium Designer 6.0 with both schematic document and VHDL program as input. The simulation is based on chip XC25300E - 6PQ208C of Xilinx Corn v The design can meet the high speed rotation requirements, which can be validated through the simulation waveforms and experiment results, it is feasible.
出处
《现代电子技术》
2008年第19期175-177,共3页
Modern Electronics Technique
关键词
光电编码器
4倍频
方向判别
FPGA
photoelectric encoder
4 multiple frequency
direction - judgment
FPGA
作者简介
冯希 女，1983年出生，在读硕士。主要研究方向为信号与信息处理。
