摘要：异步电动机是工业企业的主要动力源，其故障所导致的经济损失是巨大的。通过在线监测电机的电气及物理参数可预先识别电机的故障和不稳定运行状态，这对及时排除故障，降低经济损失具有重要意义。该文对近年来电机故障在线监测及故障早期检测技术做了综述，并展望相关技术的发展方向。

关键词：异步电动机；在线监测；故障诊断；早期检测
Abstract: Asynchronous motor is the main power source of the industrial, the economic losses caused by its faults is enormous. Monitoring the electrical and physical parameters of the motor can be predetected  motors  abnormal running states, and it is important to timely troubleshoot and reduce the economic losses . The aim of this article was reviewed in recent years,motor faults monitoring and  the early faults detection technology, and looked forward to the development of related technologies direction.
Key words: asynchronous motor; monitoring; fault diagnosis; early detection