首先对滚动轴承振动信号进行经验模态分解；
Firstly, the vibration signal of rolling bearing was decomposed by the EMD.
第一部分对轴承振动质量诊断参数的选取方法作了介绍。
The method selecting diagnosis parameters of bearing vibration quality is firstly introduced in the paper.
滚动轴承零件各接触表面的波纹度是引起轴承振动的主要原因。
The waviness of each contact surface of a ball bearing is the main reason which causes the ball bearing vibration.
利用分析力学方法建立了外圈有波纹度的球轴承振动模型，并求出了响应。
This paper presents a vibration model of bearing with outer race waviness and deduces the response of bearing by applying the method of analysis mechanics.
在深沟球轴承振动频谱结构分析基础上，引入了振动频谱的局部分析方法。
A method of local spectrum analysis is presented to process a bearing vibration signal based on the vibration frequency structure of a deep groove ball bearing.
部分大型汽轮机组在进汽方式切换时，高压缸轴承振动与瓦温存在爬升现象。
Shaft vibration and bearing temperature increases at shifting steam turbine inlets mode in some turbine-generator sets.
对船舶轴系非对中时中间轴承振动问题，通过数值模拟和物理模拟进行了研究。
In the paper the problem about the middle bearing vibration of ship shifting with misalignment is studied by the measures of numerical and physical simulation.
借助灰色系统理论，通过实验研究了32210型圆锥滚子轴承振动的控制方法。
Based on grey system theory, the vibration control method of 32210-tapered roller bearing was studied.
实验数据处理结果表明，轴承振动与噪声的关系不明显，并具有很大的不确定性。
The results of data processing demonstrate that, the relationship between vibration and noise of rolling bearings is not obvious, and it has significant uncertainty.
详细分析滚动轴承振动信号的特征，并给出典型轴承的各种特征频率的计算公式。
In details, this paper elaborated the characteristics of rolling bearing vibration signals, and formulas were given to determine typical bearing characteristic frequencies.
利用灰色系统理论对试验数据进行分析，找出了对轴承振动速度值影响比较大的参数。
We use grey system theory to analyze the experimental findings and found out the parameter which mostly affects the vibration velocity of tapered roller bearing.
以灰色系统理论为基础，通过实验研究6201和6203轴承振动与噪声的灰色关联性。
The relationship between the vibration and the noise of rolling bearings is studied based on the grey system theory.
针对轴承振动的非平稳性特点和频谱成分的混杂性，提出了基于小波的信号自适应阈值降噪法。
Base on that, the application of wavelet transformation in fault diagnosis to analyse nonstationarity of roller bearing vibration signals with Daubieches wavelet is introduced.
对磁电式速度传感器采集的水泵轴承振动信号分别进行了短时傅立叶变换、小波变换、小波包变换。
The vibrating signals collected from pump bearings by a velocity sensor were analyzed with short time Fourier transform(STFT), wavelet transform(WT) and wavelet packet transform(WPT) in the paper.
针对目前国内轴承振动测量仪不能识别轴承异常声的问题，设计了一种新的轴承故障诊断仪器系统。
Aiming at that the bearing vibration measure instrument in our country can't indentify the abmomal sounds of the bearing, the new instrument system has been designed for bearing failure diagnosis.
该方法利用时间序列分析技术，对滚动轴承振动信号进行建模和谱分析，找出引起轴承振动的表面因素。
The vibration signal is modeled and analyzed by using the technique of time series analysis, and the main factors of the surface waviness which cause the ball bearing vibration are detected.
针对波纹度对低噪声深沟球轴承振动的影响，分析造成沟道波纹度的原因，提出降低沟道波纹度的相关措施。
In the light of the influence of the waviness on deep groove ball bearing oscillation, the reasons of causing the grooved raceway waviness were analyzed, the measure was given to reduce waviness.
因此，在对轴承振动信号进行故障诊断的研究中，对信号进行频谱分析，判断轴承缺陷的类型是一种重要方法。
Therefore, it is an important way to analysis the signal spectrum and determine the type of bearing defects in the study of bearing vibration signals for fault diagnosis.
试验结果表明，本文提出的方法能正确地分析出表面波纹度的激振特性以及引起轴承振动的主要波纹度谐波分量。
The vibration signal is modeled and analyzed by using the technique of time series analysis, and the main factors of the surface waviness which cause the ball bearing vibration are…
分别从时域和频域的角度分析了滚动轴承的振动信号，提出了反映滚动轴承振动水平和噪声水平的各种特征参数。
This paper analyzes vibration signals of rolling element bearing in time-domain and frequency-domain, and puts forward the characteristic parameters to reflect the level of vibration and noise.
本文总结分析了滚动轴承典型故障的故障机理及其振动特征，详细介绍了滚动轴承振动信号分析与故障诊断的方法。
The fault principle and the fault vibration property were analyzed in this paper. The means of vibration signal analysis and fault diagnosis of the rolling bearing were also introduced.
在轴承缺陷检测和诊断的过程中，有缺陷的轴承振动信号分散在一个较宽的频带范围，很容易被噪声和低频信号所掩盖。
In the process of bearing defect detection and diagnosis, the faulty bearing vibration signals are scattered in a wide frequency range, which can be easily masked by noise and low-frequency effects.
随着国内外轴承市场对低噪音轴承的需求量的增加、对轴承振动与噪声分贝值越来越低的要求，使得低噪音轴承的研制工作显得日益重要。
With the increase and demand in low voice and low decibel vibration bearing in world market, the research in low noise bearing has become more and more significant.
结果表明，重分配的小波尺度图能够以较高的时频分辨率表示轴承振动中的非平稳特征，反映轴承的多种故障，瞬时能量估计可以作为分析轴承状态的依据。
Results show that the reassigned scalogram has the signal feature in the time-scale plane with the high resolution, the transient energy evaluation has the transient feature in a more distinct as…
本文还进行了轴承刚度值对轴系耦合振动特性的影响的研究。
The effect of bearing stiffness on the performance of coupled vibration is also investigated in this paper.
因此，如何减少轴承磨损是振动机构研究的主要课题之一。
So how to decrease the abrasion of bearings becomes one of the important researching subjects.
以试验为基础，研究30204圆锥滚子轴承套圈参数与振动速度的关系。
Based on the experiment, the relation between ring parameter and vibration velocity of 30204 tapered rolling bearing is studied.
这种不平衡离心力作用在转子轴承上会引起振动，产生噪声和加速轴承磨损，以致严重影响产品的性能和寿命。
This unbalanced centrifugal force on the rotor bearing will cause vibration, noise and accelerate the bearing wear, which seriously affect the performance and life of the product.
这种不平衡离心力作用在转子轴承上会引起振动，产生噪声和加速轴承磨损，以致严重影响产品的性能和寿命。
This unbalanced centrifugal force on the rotor bearing will cause vibration, noise and accelerate the bearing wear, which seriously affect the performance and life of the product.
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