基于DAQ的中频发电机试验系统设计与实现

发电机试验系统采用计算机平台和虚拟仪器技术是发展方向。介绍了基于DAQ的中频发电机试验系统的设计与实现。该系统以工业控制计算机为基本平台,以V isual Basic为软件开发平台,多路电压、电流信号同时采样,实时分析和显示电压、电流、功率等电量,并对电压进行谐波分析,完成规定的中频交流同步发电机型式试验和出厂试验。经比较测试,其电压、电流的系统测试误差(引用误差)小于0.3%,其他参数的系统测试误差(相对真误差)不大于0.4%。系统自投入运行以来,性能稳定,准确可靠。

Design and realization of the mid-frequency generator test system based on DAQ

It is the developing direction that the generator test system adopts the computer platform and virtual instrument technology.This paper introduces the design and realization of the mid-frequency generator test system based on DAQ.This system takes industrial control computer as the basic platform,Visual Basic as the software developing platform.It samples multi-way voltages and electric current signals at the same time.It analyzes and indicates the electric parameters of the voltage,electric current,power,etc,carries on harmonic wave analysis to the voltage,and finishes standard mid-frequency exchange synchronous generator type test and product test.Through relative test,the system testing errors(quotes the error) of its voltage,electric current are smaller than 0.3%,the system testing error(relatively real error) of other parameters is not larger than 0.4%.Since the system is put into practice,its performance is steady and accurate.