介绍了一种旋转机械状态监测与故障诊断系统。该系统主要采用了基于转子轴心轨迹测试和分析 ,以一、二和三阶正、反进动量为特征量的监测、诊断方法。系统还保留了频谱分析功能 ,测试的各阶频谱分量 ,可与正反进动量相辅用于故障的监测、诊断。文中阐述了系统的工作原理、构成及特点、监测功能和监测实例等。 A rotating machinery condition monitoring and fault diagnosis system is introduced. The system mainly adopts the monitoring and diagnosis method based on the test and analysis of the rotor axis trajectory, and the characteristic quantities of one, two and three orders of positive and negative forward momentum. The system also retains the spectrum analysis function, the test spectrum of various orders, with forward and reverse feed can be used for fault monitoring, diagnosis. This paper describes the system’s working principle, composition and characteristics, monitoring functions and monitoring examples.