The Hilbert-Huang spectrum can decompose the mechanical vibration signal as finite modes, then disclose the running status of machinery by the means of time-frequency;
希尔伯特-黄谱可以将机械振动信号分解为有限的模式，然后以时频方式揭示机械的运行状况；
Failure mechanism of vibration signal analysis is the mechanical fault diagnosis technology used in one of the main method.
故障机理的研究振动信号分析是机械故障诊断技术中采用的最主要的方法之一。
Whether there exists a periodic impulse component in a vibration signal is an important sign of a mechanical device being faulty.
机械设备振动信号中是否存在周期性的冲击分量是其有无故障的重要标志。
In this paper, several time domain waveforms of vibration signal and its identification method in mechanical fault diagnosis are analysed.
本文主要论述了机械故障诊断中，几类振动信号时域波形的分析与识别方法。
The dynamic test in signal detection of mechanical vibration are realized by using resistance strain gauges.
利用电阻应变计开发的动应变测量系统，成功的实现了机械振动信号的动态检测。
The mechanism and signal characteristics of mechanical vibration of motor are set forth. The vibration signal of the ball bearing of motor was recognized.
对电机的机械振动产生的机理与信号特征进行了阐述，针对电机滚动轴承内外圈磨损引发的振动进行了识别研究。
According to this theory, this paper gives an instance for analyzing a vibration signal of reciprocating compressor valve. The method is fairly effective in mechanical fault recognition.
借此理论，本文对较为复杂的往复式空气压缩机气阀振动信号作了分析，探讨了用于故障气阀自动识别的方法，收到了较好的效果。
The signal de-noising processing and signal source identification are two important problems in mechanical vibration analysis.
信号的消噪处理和信号源识别是振动分析中的两个重要问题。
The signal de-noising processing and signal source identification are two important problems in mechanical vibration analysis.
信号的消噪处理和信号源识别是振动分析中的两个重要问题。
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