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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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