基于单片机的三相正弦波发生器设计  

Design of Three-Phase Sine Wave Generator Based on Single-Chip Microcomputer

作　　者：吴兴波[1] 贾彬彬[1] 赵亮[1] 

机构地区：[1]吉林化工学院信息与控制工程学院,吉林吉林132022

出　　处：《吉林化工学院学报》2012年第9期86-89,共4页Journal of Jilin Institute of Chemical Technology

摘　　要：介绍了基于MSP430F169单片机的波形发生器,产生相位差互为120°的三相正弦波.基本原理是将正弦波数据预先存入单片机,利用单片机定时器来控制片内DAC0和DAC1两路数模转换模块按所存数据更新输出,发出A相和B相正弦波,依据三相交流电瞬时值之和为零的原理合成C相正弦波.幅值、频率均可调,幅值通过程控放大器放大,频率通过单片机设定.The design of waveform generator based on MSP430F169 is describe, which produces three-phase sinusoidal wave with phase difference of each others 120 °. The basic principle is depositing the sine-wave data in the MCU in advance, then the internal DAC0 and DAC1 are controled to update the output by the internal timers as the sine-wave data. The A phase and B phase we have got constitute the C phase basing on the principle that the instantaneous value of three-phase alternating current is zero. Amplitude and frequency are adjustable. Amplitude can be enlarged through the programmable amplifier.and freauencv is set bv the MCU

关 键 词：MSP430F169 波形发生器 三相正弦波 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]