摘要
应用DDS设计完成了一套基于89S51单片机的直接数字式频率合成系统;系统中的信号发生器以单片机为中心控制系统,由晶体振荡电路、地址产生电路(直接数字合成DDS)、波形产生电路、短路保护电路、功率放大电路及串行通讯电路组成;采用了直接数字频率合成技术,较大幅度地提高了输出波形的频率;可满足输出频率0.1Hz～10kHz的变化范围。
In this thesis, a new direct digital synthesizer controlled by 89S51 single chip-microcomputer has been successfully designed and assembled. The signal generator based on single chip conputer was introduced. The signal generator consists of the micro controller 89S51, the crystal osicaUy circuit, the address maker circuit （DDS）, the waveforms maker circuit, the operationa lamplifiers circuit, the power amplifier circuit, and the serial communication circuit. In orde rto improve the frequency of the output waveforms, the direct digital synthesizer was apphed in this system.. The range of frequency required is 0.1Hz- 10kHz.
出处
《装备制造技术》
2009年第9期17-18,21,共3页
Equipment Manufacturing Technology
