Main Content

本页的翻译已过时。点击此处可查看最新英文版本。

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

全部展开

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

振动信号的阶次分析

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. Apply envelope spectrum analysis and spectral kurtosis to fault diagnosis on bearings.

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 (System Identification Toolbox)

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

特色示例