基于DSP正弦信号源的实现  

Study of the Sine Signal Based on DSP

作　　者：郝俊寿[1] 李春明[1] 

机构地区：[1]内蒙古工业大学信息工程学院,内蒙古呼和浩特010051

出　　处：《现代电子技术》2007年第10期158-159,165,共3页Modern Electronics Technique

摘　　要：应用DSP TMS320F2812事件管理模块(EV)中的PWM单元产生给定频率的方波信号,经三阶低通滤波电路后得到所需频率的正弦信号。并以产生4 kHz频率的正弦信号为例,从硬件和软件两方面讨论基于DSP的正弦信号源的设计和实现方法,并搭建实际电路进行仿真,验证了设计结果的可行性。该方法通常用于某些电路激励源的产生。PWM unit of DSP TMS320F2812 is applied to produce the rectangle wave that has needed frequency. The sine signal is gained from the rectangle wave,which is filtered by three order lowpass filter circuit. 4 kHz frequency sine signal as an example,sine signal source design and implementation method is discussed from hardware and sofeware both side. At the same time,a practical circuit is rescued and simulated. The feasibility of result is validated, such approach is applied to produce certain circuit driving source.

关 键 词：DSP 正弦信号 滤波电路 PWM 

分 类 号：TN75[电子电信—电路与系统]