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非稳态振动
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  “非稳态振动”译为未确定词的双语例句
     Recognition of Non-stationary Vibration Sources of Rotating Machines Based on Wavelet Analysis
     基于小波分析的旋转机械非稳态振动源识别
短句来源
     Wavelet transform possesses excellent characteristic of time frequency localization, and provides an effective measure for analysing signal causing unstable vibration.
     小波变换具有很好的时域和频域局部化特性,为以非稳态振动为特征的信号提供了有效的分析手段。
短句来源
     Examples of analysing the faults are given and there are several diagnoses in comparison with one another. The paper provides an effective measure to analyse the machinery faults causing unstable vibration. And it concludes that the wavelet analysing method is a better one for modern digital signal processing.
     介绍了机械设备故障诊断信号的几种处理方法—频域分析、时域分析、时-频域分析,简述了Wigner分布及小波、小波包原理,同时给出了故障分析的实例,比较几种诊断方法,对于分析以非稳态振动为表征的机械故障提供了有效的分析手段,指出信号处理的小波分析方法是现代信号处理的较好方法。
短句来源
     The timi-frequency feature of vibration signal obtained by decomposition via wavelet packet provids an effective measure for analysing the machinery faults causing unstable vibration.
     利用小波包时机械振动柜号进行分解可以获得信号的时-频分布特性,对于分析以非稳态振动为表征的机械故障提供了有效的分析手段。
短句来源
     Wavelet transformation possesses excellent properties of time-frequency localization and thus provides an effective means for analyzing signals characterized by unstable vibration.
     小波变换具有很好的时域和频域局部化特性 ,它对以非稳态振动为特征的信号提供了很好的分析手段。
短句来源
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  相似匹配句对
     Unsteady State Simulation of Distillation Process
     精馏过程的稳态模拟
短句来源
     Theory of Non--Steady Electrostatic Precipitation
     稳态静电收集理论
短句来源
     VIBRATIONS OF A PIPE LINE
     输水管的振动
短句来源
     Vibratory Stress Relief
     振动时效
短句来源
     Analysis of Pipe Vibrations
     管道的振动
短句来源
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  nonstationary vibration
Nonstationary vibration of a rotating shaft with nonlinear spring characteristics during acceleration through a critical speed (
      
Nonstationary vibration of a flexible rotating shaft with nonlinear spring characteristics during acceleration through a critical speed of a summed-and-differential harmonic oscillation was investigated.
      
The purpose of this paper is to study the nonstationary vibration of a string with time-varying length and a mass-spring system attached at the lower end.
      
A nonstationary vibration-heating problem is solved.
      
A rocket vehicle clearly experiences nonstationary vibration during its powered flight.
      
  unsteady vibration
Unsteady vibration of an infinite plate resting on an elastic base, with inertial load moving over it
      


Wavelet analysis, as a new technique of signal processing, possesses excellent characteristic of time-frequency localization and is suitable for analysing the time-varying or transient signals. The timi-frequency feature of vibration signal obtained by decomposition via wavelet packet provids an effective measure for analysing the machinery faults causing unstable vibration. In this paper the basic concepts of wavelet and the method of time-frequency decomposition of vibration signals are briefly introduced....

Wavelet analysis, as a new technique of signal processing, possesses excellent characteristic of time-frequency localization and is suitable for analysing the time-varying or transient signals. The timi-frequency feature of vibration signal obtained by decomposition via wavelet packet provids an effective measure for analysing the machinery faults causing unstable vibration. In this paper the basic concepts of wavelet and the method of time-frequency decomposition of vibration signals are briefly introduced. Examples of signal processing and machinery fault analysing via wavelet packet, as well as via other methods for comparison, are provided.

小波分析是一种日益获得广泛应用的信号处理新技术,它具有良好的时-频局部化特性,因而非常适于分析瞬态或时变信号。利用小波包时机械振动柜号进行分解可以获得信号的时-频分布特性,对于分析以非稳态振动为表征的机械故障提供了有效的分析手段。本文简述了小波和波包的基本概念以及利用小波包对振动信号进行时-频分解的方法。文中给出了利用小波包进行信号处理和故障分析的实例,并与其他诊断方法进行了比较。

Wavelet transform possesses excellent characteristic of time frequency localization, and provides an effective measure for analysing signal causing unstable vibration. This paper collected the vibration signal of water pump units by magnetoelectric transducer, and diagnosed the faults by a method using wavelet transform. Results showed the wavelet transform is a more efficient method in comparison with Fourier transform.

小波变换具有很好的时域和频域局部化特性,为以非稳态振动为特征的信号提供了有效的分析手段。采用磁电式速度传感器测定水泵机组的振动信号,并通过小波变换处理进行故障诊断分析。结果表明,小波变换的分析方法较传统的傅立叶变换更为有效。

Some digital processing methods (frequency domain,time domain,time-frequency domain)in machinery fault diagnosis are discussed in this paper.Wigner distribution and the basic Concepts of wavelet and wavelet packet are also introduced.Examples of analysing the faults are given and there are several diagnoses in comparison with one another.The paper provides an effective measure to analyse the machinery faults causing unstable vibration.And it concludes that the wavelet analysing method is a better one for modern...

Some digital processing methods (frequency domain,time domain,time-frequency domain)in machinery fault diagnosis are discussed in this paper.Wigner distribution and the basic Concepts of wavelet and wavelet packet are also introduced.Examples of analysing the faults are given and there are several diagnoses in comparison with one another.The paper provides an effective measure to analyse the machinery faults causing unstable vibration.And it concludes that the wavelet analysing method is a better one for modern digital signal processing.

介绍了机械设备故障诊断信号的几种处理方法—频域分析、时域分析、时-频域分析,简述了Wigner分布及小波、小波包原理,同时给出了故障分析的实例,比较几种诊断方法,对于分析以非稳态振动为表征的机械故障提供了有效的分析手段,指出信号处理的小波分析方法是现代信号处理的较好方法。

 
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