新型全数字SPWM波形发生器的设计与实现

Design and Realization of All-digital Spwm Waveform

本文介绍一种利用单片机、可编程逻辑器件CPLD和波形存储器EPROM组成基于DDFS技术的高精度、宽变频高载波、全数字SPWM波形发生器。介绍SPWM波形的数字计算方法以及采用CPLD构成DDFS控制器和波形存储器EPROM实现的波形控制技术。

The novel digit SPWM controller isintroduced in the paper,the contr ol ler iscomposed of a chip microcomputer,CPLD and EPROM.It possesshigher precisi on,frequency con-version width and higher carrier wave.The digit calculate meth od and DDFScontroller of wave of SPWM are alsointro-duced.