数字式单相和三相基准正弦波信号发生器  

Digital single-phase and three-phase reference sinewave signal generator

作　　者：王永[1] 何凯[1] 沈颂华[1] 

机构地区：[1]北京航空航天大学自动化科学与电气工程学院,北京100083

出　　处：《电测与仪表》2003年第10期16-18,53,共4页Electrical Measurement & Instrumentation

摘　　要：提出了一种采用数字合成与移相电路相结合的方法来生成单相和三相基准正弦波的方法。详细地分析了其电路工作原理和参数的选择,并给出了试验结果。实验表明采用该方法生成的单相和三相正弦波具有频率精确度高、波形失真小、幅值稳定且连续可调等优点,且电路结构简单实用,是各种测量和控制电路中理想的单相和三相基准正弦信号发生器。In this paper a kind of single-phase and three-phase reference s inewave signal generator is presented by using digital method together with phas e-shifting circuit.The the-ory of circuit and how to select circuit parameter are analyzed detailedly and the experi-ment result is given.The experiment de monstrates that the kind of single-phase and three-phase reference sinewave si gnal has the characteristics of high frequency precision,low waveform distortio n and the amplitude is stable and adjustable continuously,even,the cir-cuit i s simple and applied,it is a kind of ideal single-phase and three-phase refer ence sinewave signal generator in the field of measurement and control.

关 键 词：正弦波 信号发生器 数字合成 移相电路 单相 三相 

分 类 号：TM935.1[电气工程—电力电子与电力传动]