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随着现代化工业的大发展,大型三相异步电动机以它运行可靠,便于维护,经济性好等优点已被广泛应用于电力、冶金、矿业及化工等部门,起着不可替代的作用。数据采集是电动机在线监测和故障诊断技术的重要基础,通过对电动机电压、电流信号的分析可以判断电动机是否出现单相短路、定子绕组匝间短路等故障。所以电压、电流信号采样的准确性和实
With the great development of modern industry, large-scale three-phase asynchronous motor has been widely used in electric power, metallurgy, mining and chemical industries for its reliable operation, easy maintenance and good economy. It plays an irreplaceable role. Data acquisition is an important foundation for motor on-line monitoring and fault diagnosis technology. Through analyzing the motor voltage and current signals, it can be judged whether the motor has single-phase short circuit, short circuit between stator windings and other faults. So the voltage and current signal sampling accuracy and real