基于FPGA的实时可编程高精度信号源设计  

Design of Programmable Signal Generator with High Precision based on Singlechip

作　　者：刘宁[1] 甄国涌[1] 

机构地区：[1]中北大学,山西太原030051

出　　处：《电力电子技术》2008年第6期81-83,共3页Power Electronics

基　　金：国家自然科学基金资助(50405025)~~

摘　　要：以16位高精度D/A转换器为核心构建波形重构电路,将单片机和FPGA组合实现总体控制,完成了基于FPGA的实时可编程高精度信号源设计。利用单片机集成的16位高精度A/D构建了一个闭环控制系统,提高了系统的整体精度。此外,应用USB总线技术完成波形数据和命令的实时下载,实现了信号源的实时可编程。对测试结果进行分析,信号源精度达到0.01%,满足设计要求,且系统稳定可靠。A new method about signal generator is put forward,in which the 16 bits high precision D/A converter playes the key role in wave reconstruction circuit and the collectivity control is realized by combination of singlechip and FPGA.The whole precision of the system is improved by establishing a closed loop controlled system with the high precision 16 bit A/D converter integrated on singlechip.With USB bus technologies the wave data and command can be downloaded in real time, so this signal generator can be programmed in real time.The test result indicates that the precision of this signal generator is 0.01%,which satisfies the design demand.and the system is reliable and stable.

关 键 词：信号 可编程序控制器 编码 单片机 

分 类 号：TN914.1[电子电信—通信与信息系统]