摘要
本文介绍了虚拟仪器技术的概念、构成、优点及发展方向,在消化和吸收VXI总线规范的基础上,研究VXI总线初级接口电路及基于数字波形合成(DDS)技术的VXI系统平台上信号源发生器功能电路的一种设计方法。通过分析DDS技术在波形产生功能电路中的应用,推出了一种利用DAC实现高精度线性程控的方法。
This paper describes concept of VI (Virtual Instrumentation) .As well as construction feature and development of it .Based on the VXI - bus specification, this paper designs the primary interface circuit and presents a method of arbitrary waveform generator's function circuit which is based on the VXI system. It mainly introduces the application of DDS technology in the arbitrary wave generator's function circuit, It proposes a method of high-rate accuracy programming control by way of DAC.
出处
《微计算机信息》
北大核心
2006年第11S期194-196,共3页
Control & Automation