1) DDS
数字直接合成
2) direct digital synthesis
直接数字合成
1.
AIM: To compare the performance of two exciting sources based on direct digital synthesis (DDS) technology and to present some advice for the future system design.
目的:比较两种基于直接数字合成技术的阻抗激励源的性能,为以后阻抗系统设计提供指导。
2.
This paper is to design a current-mode multi-frequency impedance exciting source which adopts direct digital synthesis technology.
目的:设计一个采用直接数字合成技术的电流模式多频阻抗激励源。
3.
Through analysis on the working principle of direct digital synthesis (DDS) technique,combined with actual DDS chip AD9850,detailed introduction to including FM,FSK,PSK etc multi-digital modulation methods realization was made.
通过对直接数字合成技术DDS工作原理的分析,结合具体的DDS芯片AD9850,详细介绍了包括FM,FSK,PSK等多种数字调制方法的实现。
3) DDS
直接数字合成
1.
A controller of ultrasonic power based on DDS technology;
基于直接数字合成技术超声电源控制器的研究
2.
Based on the DDS technique, the exciting signal source has high accuracy, and the data can be acquired by phase-sensibility demodulation.
采用直接数字合成(DDS)技术产生高精度激励信号源,用相敏解调方法实现数据获取。
3.
The signal generator consists of the micro-controller 89C51,the crystal osically circuit,the address maker circuit(DDS),the waveforms maker circuit.
该信号发生器以单片机(89C51)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、运算放大电路、功率放大电路及串行通讯电路组成。
4) Direct digital synthesis(DDS)
直接数字合成(DDS)
5) direct digital synthesizer
直接数字合成器
1.
A new ECM jamming source concept using broad band Direct Digital Synthesizer (DDS) is proposed .
运用直接数字合成器(DDS)设计一种新型干扰源 ,通过对新型干扰源的分析 ,阐明了新型干扰源在系统中的使用方法及应用前
2.
Considering miniaturization is an important trend in mass spectrometer development,a method of amplitude modulation of direct digital synthesizer(DDS) realized by filed-programmable array(FPGA) software was proposed,and the digital control technology of resonant excitation and a new system whose hardware was simpler had been developed.
针对质谱仪小型化趋势,提出基于现场可编程门阵列(filed-programmable gate array,FPGA)软件实现直接数字合成器(direct digital synthesizer,DDS)信号幅度调制的方法,开发出数字式共振激发控制技术,研制出结构更简单的共振激发控制系统。
6) direct digital synthesis(DDS)
直接数字合成
1.
With the appearance of DDS ASIC,Direct Digital Synthesis(DDS) technology is wide ranging applied.
直接数字合成技术 (DDS)随着专用芯片的大量出现而得到广泛的应用。
2.
A high-accuracy frequency source,which is based on the direct digital synthesis(DDS)and is controlled in real-time by the application software run on PC,has been designed and implemented,after the USB(universal serial bus)protocol and DDS were studied and analyzed.
通过对通用串行总线(USB)协议和直接数字合成(DDS)技术的研究和分析,设计实现了一种采用DDS技术的高精度频率源,并且能通过计算机应用软件对其进行实时控制。
补充资料：直接数字控制
分子式：
CAS号：
性质：使用数字计算机进行的过程控制，用一台数字计算机分时处理多个控制回路，实现多个回路的控制，取代模拟调节器直接控制调节阀等执行机构。
CAS号：
性质：使用数字计算机进行的过程控制，用一台数字计算机分时处理多个控制回路，实现多个回路的控制，取代模拟调节器直接控制调节阀等执行机构。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条