University of Ottawa Rolling-element Dataset – Vibration and Acoustic Faults under Constant Load and Speed conditions (UORED-VAFCLS)

Each set of raw data is obtained at a constant nominal rotational speed and load. Four fault types are collected: inner race, outer race, ball, and cage (five of each type). A total of 20 bearings are tested, where each bearing has three states of data collection: healthy, developing fault, and faulty. As a result, 60 distinct sets of data are included. For all cases, data is collected at a sampling rate of 42,000 Hz for a total 10 seconds per set of data. Raw data is provided in the folders as comma separated values files (.csv), Excel files (.xlsx), and MATLAB files (.mat) Spectrograms are created from the raw data by using the short-time Fourier transform (STFT), while using a Hanning window to convert the accelerometer and microphone values into 2D images. For each raw data file, 400 spectrogram images are created with a signal length of 512. A total of 24,000 spectrogram images are created, 12,000 images for each of the accelerometer and microphone data files. The processed data are provided in the zip files as portable network graphics files (.png).

每组原始数据均在恒定额定转速与负载条件下采集得到。本次采集了四类故障类型：内圈、外圈、钢球与保持架故障，每类故障各5组样本。本次共测试20套轴承，每套轴承对应三种数据采集状态：健康状态、故障发展状态与故障状态，最终共包含60组独立数据集。所有数据集均以42000Hz的采样率采集，单组数据总时长为10秒。原始数据以三种格式存放在对应文件夹中：逗号分隔值文件（.csv）、Excel文件（.xlsx）与MATLAB文件（.mat）。基于原始数据，通过短时傅里叶变换（STFT）并辅以汉宁窗（Hanning window），将加速度计与麦克风采集的信号转换为二维语谱图。每份原始数据文件均可生成400幅语谱图，单幅图像对应信号长度为512。本次共生成24000幅语谱图，其中加速度计与麦克风数据各对应12000幅。处理后的语谱图数据以可移植网络图形文件（.png）格式打包在压缩包中。

搜集汇总

背景与挑战

背景概述

该数据集包含20个滚动轴承在恒定负载和速度条件下的振动和声学故障数据，涵盖健康、发展中故障和故障三种状态。数据以42,000 Hz的采样率采集，并提供了原始数据文件（CSV、Excel、MATLAB）和24,000个频谱图图像（PNG格式），适用于故障诊断和机器学习研究。