基于PXI总线的高精度LVDT/RVDT标准信号源的设计与实现  

Design and Implementation of High-Presision LVDT/RVDT Standard Signal Source Based on PXI Bus

作　　者：吴朝华[1] 黄月芳[1] 赵砚博[1] 

机构地区：[1]北京航天测控技术有限公司,北京100041

出　　处：《计算机测量与控制》2013年第8期2317-2320,共4页Computer Measurement &Control

摘　　要：针对测试系统中对LVDT/RVDT信号的仿真测试要求,文章主要描述了一种基于PXI总线的高精度LVDT/RVDT标准信号源模块设计和实现,用于在计算机的控制下仿真输出LVDT/RVDT传感器的位移传感信号;电路主要利用四象限乘法DAC芯片、FPGA控制逻辑和A/D转换器芯片,通过改变DAC的幅度控制信号实现输出正反相位可控的多路精确交流信号,达到精确仿真输出LVDT/RVDT信号的目的。For the test requirements of LVDT/RVDT signal simulation in testing system, article describes a Design and Implementation of a High--presision LVDT/RVDT standard signal source based on PXI bus. This method is used in computer control simulation output LVDT/RVDT signal of displacement sensor. The main circuit uses Multiplying with Four--Quadrant Resistors DAC chip. FPGA control logic and A/D conversion chip, By changing the DAC amplitude control signal output positive or negative phase controlled multiway exact AC singal, to achieve the purposes of accurate simulating the LVDT/RVDT signal.

关 键 词：LVDT RVDT 四象限乘法DAC芯片 RMS 自校准 

分 类 号：TN919[电子电信—通信与信息系统]