Description: 提取振动曲线的波峰和波谷值，返回对应的坐标值和峰值。-extract vibration curve peaks and trough values corresponding to the coordinates of the peak value. Platform: |
Size: 1146 |
Author:wyl |
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Description: 一种有效的包络线算法，可以实现很多情况下的振动信号的包络线生成。-an effective envelope algorithm can achieve many of the vibration signal envelope generation. Platform: |
Size: 8038 |
Author:阿木 |
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Description: 提取振动曲线的波峰和波谷值，返回对应的坐标值和峰值。-extract vibration curve peaks and trough values corresponding to the coordinates of the peak value. Platform: |
Size: 1024 |
Author:wyl |
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Description: 一种有效的包络线算法，可以实现很多情况下的振动信号的包络线生成。-an effective envelope algorithm can achieve many of the vibration signal envelope generation. Platform: |
Size: 8192 |
Author:阿木 |
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Description: 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 combining extracts bearing vibration signal weak to overcome the traditional envelope analysis method easy to lose the signal disadvantage of the active ingredient. Refinement of the envelope signal spectrum better reflects the bearing fault information. Platform: |
Size: 141312 |
Author:张力 |
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Description: 该算法用于抽取垂直振荡信号的谐波频率，以及信号的包络。同时包含了语音信号实例。-Harmonic frequency envelope of the algorithm for extracting the vertical oscillation signal, and the signal. Examples of the speech signal contains. Platform: |
Size: 1569792 |
Author:杨超 |
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Description: This paper describes a method for detecting faults
in the tap selector by means of vibration measurements during tap
changer operation, using envelope analysis based on Hilbert transform
and wavelet decomposition. Different failures at the tap selector
can be distinguished in the vibration signature as they are
reflected in different parts of that signature. The diagnosis parameters
allowing the most selective failure classification are found. Platform: |
Size: 2020352 |
Author:唐建 |
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Description: 参考了张家凡的振动信号的包络解调分析方法研究及应用，实现了轴承信号的仿真-Reference envelope demodulation method and application Zhang Fan vibration signal to achieve a simulation of bearing signals Platform: |
Size: 8159232 |
Author:袁万全 |
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Description: 针对滚动轴承复合故障信号特征难以分离的问题， 提出将双树复小波变换和独立分量分析( ICA) 结合的故障诊断方
法 该方法首先将非平稳的故障信号通过双树复小波变换分解为若干不同频带的分量 由于各个分量存在一定的频率混叠， 对
故障信号特征提取有很大的干扰， 进而引入 ICA 对各个分量所组成的混合信号进行盲源分离， 从而尽可能消除频率混叠 最后
对从混合信号中分离出来的独立分量信号进行希尔伯特包络解调， 即可实现对复合故障特征信息的分离和故障识别-Aiming at the difficulty of separating the fault feature from compound rolling bearing fault signal，a new
fault diagnosis method is proposed based on dual-tree complex wavelet transform ( DT-CWT) and independent com-
ponent analysis ( ICA) ． Firstly，DT-CWT is used to decompose the non-stationary fault vibration signal into several
components with different frequency bands． Because frequency aliasing exists in the components，this problem dis-
turbs the feature extraction of the fault signal． Then，ICA is introduced to perform blind source separation on the
mixed signal consisting of various components to eliminate the frequency aliasing as far as possible． Finally，Hilbert
envelope decomposition is performed on the independent signal components separated from the mixed signal． Thus
the compound fault feature information can be separated，and the fault identification is achieved． Platform: |
Size: 927744 |
Author:侯蒙蒙 |
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Description: 包络分析大多在原始振动加速度信号基础上进行， 受噪声干扰等因素的影响较大 通过对原始振动信号自相关函数作包络分析， 可以有效地抑制噪声， 突出反映故障调制特征-s． Most of the envelope analyses are based on original vibration accelera-
tion signal，which is seriously influenced by noise interference． The noise is effectively suppressed by envelop analysis
of auto correlation function of original vibration signal，and the modulation characteristics of fault are highlighted． Platform: |
Size: 1004544 |
Author:侯蒙蒙 |
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Description: 小波分析语音信号并计算各IMF包络的能量熵-Wavelet analysis of vibration signals and calculate the energy entropy IMF envelope Platform: |
Size: 1024 |
Author:李雪 |
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Description: 可调Q因子小波变换，用在故障诊断中，程序中包含了原始TQWT工具箱和轴承振动信号信号的谱包络的求取等，最新的应用成果-Adjustable Q-factor wavelet transform used in fault diagnosis, the program includes a spectral envelope of the original TQWT toolbox and bearing vibration signal signal to strike, etc., the latest application of the results Platform: |
Size: 5117952 |
Author:余发军 |
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Description: 对轴承振动信号进行滤波和包络频谱分析，可通过包络谱发现轴承故障，也可用于其他故障诊断的研究，程序已调试通过-Bearing vibration signal filtering and envelope spectrum analysis, bearing failure can be found through the envelope spectrum can also be used to study other troubleshooting procedures have been debugging through Platform: |
Size: 1024 |
Author:徐清瑶 |
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Description: 对一段振动信号emd分解后，求每个分量的峭度值，选取峭度最大的分量，求其包络谱，能够明显看出特征频率。-After a period of vibration signal emd decomposition, seeking kurtosis value of each component, the largest component of kurtosis, seeking its envelope spectrum, can obviously see that the characteristic frequency. Platform: |
Size: 1024 |
Author:zxb |
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Description: 共振解调法诊断轴承损伤类故障的原理概述如下:当轴承某一元件表面出现局部损伤时，在受载运行过程中要撞击与之相互作用的其它元件表面，产生冲击脉冲力，由于冲击脉冲力的频带很宽，必然包含轴承外圈、传感器甚至附加的谐振器等的固有频率而激起这个测振系统的高频固有振动。根据实际情况可以选择某一高频固有振动作为研究对象，通过中心频率等于该固有频率的带通滤波器把该固有振动分离出来。然后进行包络解调，去除高频衰减振动的频率成分，得到只包含故障特征信息的低频包络信号，对这一包络信号进行频谱分析便可以容易地诊断出轴承的故障来。-The principle of resonance demodulation method in the diagnosis of bearing damage such failure overview is as follows: when the bearing surface of a local damage, in the process of loading operation to hit with other elements of the interaction of surface, impact pulse power, due to the impact pulse frequency band is very wide, inevitably contains the bearing outer ring, sensors and even additional resonator and stir up the natural frequency of the vibration system of the high frequency vibration mode.A high frequency vibration mode can be selected according to actual situation as the research object, through the center frequency is equal to the natural frequency of the bandpass filter to separate the natural vibration.Then envelope demodulation, frequency components to remove the high frequency vibration attenuation, get only includes fault feature information of low frequency envelope signal, the envelope signal spectrum analysis can be easily diagnosed bearing failure. Platform: |
Size: 4096 |
Author:黄杰 |
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Description: 振动信号时域、频域、倒频域、包络、时频分析，真实可靠，童叟无欺-Vibration signal in time domain, frequency domain and inverted frequency domain, envelope, time-frequency analysis, true and reliable, fair trade Platform: |
Size: 2048 |
Author:liyahua |
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Description: 本文提出一种基于频率切片小波变换和谱峭度的综合算法。首先对轴承端的振动信号时频分析，采用FFT、包络谱、频率切片小波变换对其频域性能进行分析，再求其峭度谱与对应包络谱，结合其时域、频域性能，综合分析轴承故障。-This paper presents a synthesis algorithm based on frequency slice wavelet transform and spectral kurtosis. Firstly, the time-frequency analysis of the vibration signal at the bearing end is analyzed. The frequency domain performance is analyzed by FFT, envelope spectrum and frequency slice wavelet transform. Then the kurtosis spectrum and the corresponding envelope spectrum are analyzed. Combining its time domain, frequency domain performance, Comprehensive analysis of bearing failure. Platform: |
Size: 267264 |
Author:张雪 |
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