电测与仪表Issue(11)：87-91,5.
三相精密程控标准源DDS结构优化设计
Optimal Design of Three-Phase Precise Programmable Standard Source DDS Structure
摘要
Abstract
This paper optimizes the traditional DDS structure based on the analysis of frequency resolution and phase resolution of traditional DDS technology, which are negative power of 10 without mantissa. So the accuracy of frequency and phase is improved. Through the reasonable selection of sampling points number and sine value bits number, the spurs caused by phase truncation is effectively reduced and the SNR is raised. The paper designs the three-phase precise programmable standard source on the basis of optimized DDS, which can overlape 2~31 harmonic. The output wave transition is smooth without oscillation and peak burr. The error of output fundamental voltage and current is less than 0.05%and the frequency resolution is high.关键词
标准源/DDS/相位累加器/频率分辨率/相位分辨率/精度Key words
standard source/DDS/phase accumulator/frequency resolution/phase resolution/precision分类
信息技术与安全科学引用本文复制引用
刘保连,丁祖军,李小光..三相精密程控标准源DDS结构优化设计[J].电测与仪表,2013,(11):87-91,5.基金项目
江苏省高校自然科学基础研究面上项目 （）
