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对振动信号进行的EMD分解程序,学习振动的同学可以-Of the vibration signal of EMD decomposition process, students can learn a good look at the vibration
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一个小波包分解重构函数,用于振动信号的故障诊断-A wavelet packet decomposition and reconstruction functions for fault diagnosis of the vibration signal
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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 characte
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液压泵振动信号的小波包分解以及功率谱分析,仿真信号的Hilbert谱以及边际谱;仿真信号的小波包能量计算-wavelet packet decomposition and power spectrum of vibration signals for piston pump Hilbert spectrum and marginal spectrum of stimulated signals
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matlab在振动信号处理中的应用。通过matlab编程语言将复杂的振动信号通过算法进行消噪,信号分解与重构。-The application of matlab in vibration signal processing.Through the matlab programming language to deal with the complex vibration signal, by using algorithmde to de-noising, signal decompositi
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风机叶片的裂纹和断裂是导致风机机组事故的重要因素之一,尽早诊断出风机叶片的
故障部位与故障程度,对安全生产具有意义重大。本文将叶片振动信号作为研究对象,利用小波分解方法对其进行信号分解,并与时域和频域方法处理结果进行对比分析,得出诊断结论。仿真结果表明: 小波分解方法可以更有效的获取故障特征信号,具有较高的故障诊断率。(The crack and fracture of fan blade is one of the important factors that cause the accid
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EMD工具箱,用于处理振动信号的一种分解方法,是一种基本的处理振动信号的方法。(The EMD toolbox, a decomposition method for handling vibration signals, is a basic method of processing vibration signals)
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matlab程序,用振型分解法求结构的层间剪力,内有标注,方便初学者修改参数。(Vibration mode decomposition method for interlayer shear)
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以悬臂梁为例,用有限元法编程生成质量矩阵和刚度矩阵(采用平面梁单元,单元数在10到30之间)。
使用matlab的用于广义特征值问题分析的函数(eig(A,B,'chol'),该命令使用乔莱斯基分解的方法,计算对称矩阵A和对称正定矩阵B的广义特征值问题。A对应刚度矩阵,B对应质量矩阵)计算梁的前三阶固有频率和振型,计算得到梁的前三阶固有频率和振型,并画出振型图。(Taking cantilever beam as an example, the mass matrix and stiffness
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针对滚动轴承这种非平稳振动信号采用的小波包分解的方法来检测故障的存在,运用神经网络来实现故障的分类,还结合D-S理论融合了多个传感器的诊断结果,提高了故障诊断的准确性并通过实验仿真证实。(This course's job is to use the wavelet packet decomposition method for non-stationary vibration signals of rolling bearings to detect the presence of fault
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针对信号处理方面,该例子实现了希尔伯特振动分解的,(For signal processing, this example implements the Hilbert vibration decomposition.)
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采用振型分解法,Newmark-beta法,振型叠加法,对车桥系统进行动力分析(The vibration mode decomposition method, Newmark beta method and mode superposition method are used for dynamic analysis of vehicle bridge system)
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