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振动分析

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以相干方式去除噪声,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

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envspectrumEnvelope spectrum for machinery diagnosis
orderspectrumAverage spectrum versus order for vibration signal
ordertrackTrack and extract order magnitudes from vibration signal
orderwaveformExtract time-domain order waveforms from vibration signal
rpmfreqmapFrequency-RPM map for order analysis
rpmordermapOrder-RPM map for order analysis
rpmtrackTrack and extract RPM profile from vibration signal
tachorpmExtract RPM signal from tachometer pulses
tsaTime-synchronous signal average
modalfitModal parameters from frequency-response functions
modalfrfFrequency-response functions for modal analysis
modalsdGenerate stabilization diagram for modal analysis
rainflowRainflow counts for fatigue analysis

主题

Order Analysis of a Vibration Signal

Analyze vibrations in rotating machinery using order analysis.

Modal Analysis of a Simulated System and a Wind Turbine Blade

Estimate frequency-response functions and modal parameters from experimental data.

Modal Analysis of Identified Models

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

Modal Analysis of a Flexible Flying Wing Aircraft

Compute bending modes of a flexible wing aircraft.

特色示例