摘要
随着直接数字频率合成技术(Direct Digital Synthesis,简称DDS)在电子、计算机及控制领域中的应用不断深入,其技术已相当成熟。介绍了DDS的基本原理及DDS芯片AD9833的结构和特点,利用单片机对AD9833进行控制,产生出频率可选的正弦波信号,另外采用大功率集成运算放大器OPA541对信号进行放大的同时实现幅度可调,并将其应用在火炮控制系统当中。给出了信号发生器的硬件结构以及软件实现方案。
With far-ranging application of the technology of Direct Digital Synthesis in electronic,computer and control field,its level of technology is becoming very perfect. In this paper,the rationale of DDS and the configuration and trait of AD9833 based on DDS are detailed stated. The MCU is used to control AD9833 in order to produce sine wave which frequency could be choice. In addition,high-power monolithic operational amplifier OPA541 is used to amplify the signal and make the extent regulable. Excitation generator is used in the system of artillery control. Moreover,the design of the hardware interface and the scheme of software are given.
出处
《火力与指挥控制》
CSCD
北大核心
2010年第S1期35-38,52,共5页
Fire Control & Command Control
