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振动分析 -凯发k8网页登录

阶数分析、时间同步平均、包络频谱、模态分析、雨流计数

signal processing toolbox™ 提供的函数可用于研究和表征机械系统中的振动。使用阶数分析来分析和可视化旋转机械中出现的频谱内容。跟踪和提取阶数及其时域波形。将信号的平均频谱估计为阶数的函数。通过估计频率-响应函数、固有频率、阻尼比和模态形状来执行试验模态分析。绘制稳定图。使用时间同步平均法连贯地去除噪声，并使用包络频谱分析磨损。为疲劳分析生成高循环雨流计数。

函数

envelope spectrum for machinery diagnosis
average spectrum versus order for vibration signal
track and extract order magnitudes from vibration signal
extract time-domain order waveforms from vibration signal
frequency-rpm map for order analysis
order-rpm map for order analysis
track and extract rpm profile from vibration signal
extract rpm signal from tachometer pulses
time-synchronous signal average
modal parameters from frequency-response functions
frequency-response functions for modal analysis
generate stabilization diagram for modal analysis
rainflow counts for fatigue analysis

主题


  • 用阶次分析来分析旋转机械的振动。

  • rolling element bearing fault diagnosis (predictive maintenance toolbox)

    perform fault diagnosis of a rolling element bearing based on acceleration signals.


  • identify a state-space model of a system and use the model to compute frequency-response functions and modal parameters.

  • (system identification toolbox)

    this example shows computation of bending modes of a flexible wing aircraft.

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