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vib
- Vibration is a mechanical phenomenon whereby oscillations occur about an equilibrium point. The oscillations may be periodic such as the motion of a pendulum or random such as the movement of a tire on a gravel road.
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- 对重分配小波尺度谱存在着时、频分辨率不能同时达到最佳及当振动信号中存在着能量较大的噪声时会降低其时频分布可读性的缺陷，提出一种基于参数优化和奇异值分解(SVD)提高重分配尺度谱时频分布可读性的方法。首先利用Shan— non熵方法优化重分配尺度谱基函数的时间．带宽积(TBP)，克服其时、频分辨率不能同时达到最佳的缺陷，再对重分配尺度谱 进行SVD降噪降低噪声干扰影响，提高时频分布的可读性。最后用该方法对仿真信号和滚动轴承故障信号进行了分析，结果表明该方法的时频聚集性更好，抗噪能力更强，能
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- 提出一种基于小波分析和奇异谱降噪理论的新方法, 在分析滚动轴承故障特性的基础上, 将奇异谱理论的降噪方法与小波分析理论结合应用于滚动轴承故障诊断中。实例表明,这种结合后的新方法能够更有效地降低噪声,突出振动信号的故障特性, 从而提高设备故障诊断的准确率。-Proposed based on wavelet analysis and Singular Spectrum Reduction Noise Theory new methods in the analysis of rolling bea
Diala_report
- Vibration suppression and Control used in automobiles and industrial machines.
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- 滚动轴承是各种机电设备中的重要部件，其主要特点是其寿命的随机性较大，且它的好坏直接影响到设备的正常运行。因而掌握轴承运行的工作状态以及故障的形成和发展是目前机械故障诊断领域中研究的重要内容之一。利用轴承的随机振动信号对其工作状态进行诊断是目前最常用的方法-Rolling is a variety of mechanical and electrical equipment is an important component, its main feature is its randomness
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- 滚动轴承故障诊断是机械故障检测中一个重要方面。使用小波包分析和包络分析相结合的方法提取轴承微弱振动信号, 克服了传统包络分析方法易丢失信号有效成分的缺点。包络信号的细化谱较好体现了轴承故障信息。-Bearing Fault Diagnosis of mechanical fault detection in an important aspect. The use of wavelet packet analysis and envelope analysis method of combini
RESEARCH-PROSPECTS-
- 低频超低频振动计量技术的研究与展望-RESEARCH PROSPECTS OF METROLOGY TECHNOLOGY FOR LOW-FREQUENCY AND SUPER LOW-FREQUENCY VIBRATION
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- 针对柴油机振动信号的瞬时非线性特点, 提出采用柴油机振动信号的本征模函数( IMF) 分量进行特征频带识别的新方法。将柴油机振动信号经经验模态分解, 并去掉主要干扰因素所对应的IMF分量, 再将剩余IMF分量进行重构得到柴油机振动信号-For instantaneous nonlinear characteristics of vibration signals of diesel engine, the diesel engine vibration signal of the intrins
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- 滚动轴承振动信号容易受 到随机噪声 的污染, 如 何去噪 成为滚动轴承故障诊断的关键问题之一。而传统的消噪方法可能会将信号中一些能量小的有用信号当作噪声消除, 本 文即提出 一种改进 的小波消噪方法-Rolling bearing vibration signals are easily influenced by the random noise pollution, such as any denoising become one of the key problems of rolling
sheet_metal_fangyuan
- 考虑液面晃动和液体可压缩影响时的柱水耦联振动-Consider the water column coupled vibration compressible liquid and liquid sloshing impact when
Vibrated-Fluidized-Bed-Test-System-
- 虚拟仪器LabVIEW振动流化床测试 基于LabVIEW的振动流化床测试系统开发-LabVIEW virtual instrument based on vibration test vibration fluidized bed fluidized bed test system on LabVIEW
Analytical_BeamVIB
- Structural Beam calculation under vibration
labview-zhendongxinhao
- labview文献，基于振动信号旋转机械故障诊断的研究文献-labview literature, literature-based fault diagnosis of rotating machinery vibration signals of
Printprint_Some-EMDandHVD
- The Empirical Mode Decomposition has become very populars in ceits first introduc tion.Its suitability and expected performance for specific signal processing task is however some what openended. Addressed are basic questions concerning the decom
pint_2014_Applied-Acoustics
- The main problem in dustrial application of bearing vibration diagnostics is the masking of informative bearing signal by machine noise. The vibration signal of the rolling bearing is often covered or concealed by other structural vibrations sour
diagnosis--based-on-LEM
- A novel fault feature extraction method based on the local mean decomposition technology and multi-scale entropy is proposed in this paper. When fault occurs in roller bearings, the vibration signals picked up would exactly display non-stationary
a-multi-axis-hydraulic
- MCS在多轴振动台的使用，可以很好的提高系统性能和精度，-MCS in the use of multi-axis vibration table, it can improve the system performance and accuracy,
shaking-tables
- 振动台在许多领域都得到了很韩的应用，但其控制还是MCS应用的好-Vibration table in many areas have been very Han applications, but its control is still a good MCS applications
421
- 针对齿轮滚动轴承等的早期损伤类故障, 提出将小波包分解作为包络分析的前置处理手段以提取振动信号的故障信息特征 。 在简述小波包基本原理的基础上, 通过仿真信号, 对振动信号的具体处理过程进行分析, 并对可能遇到的问题, 提出处理办法, 然后应用于诊断实例 。 -Early damage fault for rolling bearings and other gear, the proposed wavelet packet decomposition as pre-processing mea
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- 融合小波能谱熵和支持向量机ＳＶＭ的特点提出了基于小波能谱熵的ＳＶＭ故障诊断方法． 利用转子试验台对转子典型振动故障进行模拟并采集振动数据提取其振动信号的小波能谱熵作为特征向 量-Fusion wavelet energy entropy and support vector machine SVM is proposed based on the characteristics of wavelet energy entropy SVM fault diagnosis method. U