If there were mobile things in rotating machinery, their position would be affected by the physic of the rotor. The change of their position also affected the vibration.
“自同期”现象是指在回转机械中如果有位置可移动的物体,则该物体的位置将自动的受回转机械振动相位的影响,物体位置的改变也会反过来影响回转机械的振幅,其结果会极大地增强或减弱回转机械的振幅。
参考来源 - 内装滚球转子自同期现象的理论与实验研究Condition monitoring is an effective strategy for rotating machinery.
旋转机械状态监测是保障大型机组安全高效运行、防止恶性事故的有效手段。
参考来源 - 旋转机械实时在线状态监测系统的研究——数据采集卡的研究与设计·2,447,543篇论文数据，部分数据来源于NoteExpress
The core of rotating machinery fault diagnosis technology is signal processing.
信号处理技术是旋转机械故障诊断的核心。
In this paper low-frequency vibration problems of rotating machinery are investigated.
应用时频分析方法研究了回转机械低频振动问题。
Therefore, the research on rotating machinery fault diagnosis is of great significance.
因此，对旋转机械开展故障诊断研究具有十分重要的意义。
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