工矿自动化2011，Vol.37Issue(5)：70-73,4.
直接数字频率合成技术在超声波振荡电路中的应用
Application of Direct Digital Frequency Synthesis Technology in Ultrasonic Oscillation Circuit
杨生元1
作者信息
- 1. 中煤科工集团常州自动化研究院,江苏,常州,213015
- 折叠
摘要
Abstract
In view of the problem that output frequency of traditional ultrasonic oscillation circuit is unstable because of using analog or digital self-excited oscillator, the paper proposed a design scheme of ultrasonic oscillation circuit based on direct digital frequency synthesis technology, and introduced basic working principle of direct digital frequency synthesis technology and implementation of hardware and software of the ultrasonic oscillation circuit in details. The practical application showed that the ultrasonic oscillation circuit with direct digital frequency synthesis chip AD9850 is stable and reliable, and is less susceptible to changes of temperature and humidity, which can completely solve the problem of frequency drift of ultrasonic oscillation circuit of mine-used instrument.关键词
矿用风速传感器/直接数字频率合成/超声波/振荡电路/相位累加器/DDS/AD9850Key words
mine-used air speed sensor/ direct digital frequency synthesis/ ultrasonic/ oscillation circuit/ phase accumulator/ DDS/ AD9850分类
矿业与冶金引用本文复制引用
杨生元..直接数字频率合成技术在超声波振荡电路中的应用[J].工矿自动化,2011,37(5):70-73,4.
