摘  要：研究不同场合、不同运行状态下电机故障诊断理论和技术是提高生产设备可靠运行的保证。介绍了电机故障诊断信号拾取处理和诊断方法；指出发展方向。
关键词：中小型电机;故障诊断;研究现状;发展趋势

Abstract:With the development of economy construction and the improvement of electric degree,electric machinery has been used in many fields of industry.When electric machinery is in fault conduction fault,power cut will happen in some places so that there is huge economy loss and important influence on society.So the study on the fault diagnosis theory and technology of electric machinery under all kinds of instance is a pledge,which makes equipments work normally.
 Key Words: Middle and minitype motor;Fault diagnosis;Research status;Development trends