基于虚拟仪器的电机三相电信号数据采集系统开发

摘要

基于电机拖动的液压动力系统其三相电信号能全面反映设备的运行状态，为利用信息融合方法从三相电参量中获取特征信息，必须获取高精度和高可靠性的三相电流和电压信号。设计了以电压、电流传感器和PXI6251为硬件平台，以Lab-VIEW为软件平台的三相电信号数据采集系统。软件程序采用多线程的设计方法，有效地提高了程序运行效率且保证了数据的精度和实时性。%The three-phase eIectricity parameters of hydrauIic power system which based on motor drive can fuI y refIect the run-ning condition of devices.For the purpose of using information fusion method to get the feature information from three-phase eIectricity parameters,three-phase voItage and current signaIs of high precision and high reIiabiIity must be got.This paper deveIops a three-phase eIectricaI signaI data acquisition system constituting by voItage and current sensor and PXI6251 as hardware,and LabVIEW as software.