一、旋转机械的故障诊断旋转机械的故障诊断是指利用机器的外部信息来了解机器內部的工作状态。利用故障探测传感器得到的信息来判断其內部故障或损伤的情况。由于故障诊断技术具有显著的经济效益,而且日益发展成具有足够准确性和预见性的实用学科,而被广大科技工作者关注。发电设备中汽轮发电机组转子的常见故障中有临界转速、结构共振、不平衡振动(包括热不平衡、转子初始弯曲、联轴器误 First, the failure diagnosis of rotating machinery Rotary machinery failure diagnosis refers to the use of external information to understand the machine’s internal working conditions. Use the information obtained by the fault detection sensor to determine the internal fault or damage. As the fault diagnosis technology has significant economic benefits, and has increasingly developed into a practical enough subjects with accuracy and predictability, but by the majority of scientific and technological workers. Among the common failures of steam turbine generator rotors in power plants are critical speed, structural resonance and unbalanced vibration (including thermal imbalance, initial rotor bending and coupling errors