摘要
在电磁无损检测系统中 ,信号频率及其稳定性对检测效果影响很大 ,为了解决该难题 ,文中给出了一种应用DDS技术设计的新型信号发生器解决方案。该信号发生器具有频率精度高、稳定性好、分辨率高的特点 。
Inelectromagnetic non-destructivetesting,the resultisinfluencedextensivelybyinstabilityoffrequenˉcy.To solve the problem,a newtype of signal generator based on DDS technology is presented in this paper.The characteristic of this signal generator includes high stabilitysignal frequency,high precision and high resoluˉtion.So it will be very useful for improving electromagnetic nondestructive testing effect.
出处
《国外电子元器件》
2005年第3期14-17,共4页
International Electronic Elements
关键词
电磁无损检测
信号发生器
直接数字频率合成
Electromagnetic Non-Destructive Testing
Signal Generator
Direct Digital Synthesizer
