Bearing Vibration Data under Time-varying Rotational Speed Conditions
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The data contain vibration signals collected from bearings of different health conditions under time-varying rotational speed conditions. There are 60 datasets in total. For each dataset, there are two experimental settings: bearing health condition and varying speed condition. The health conditions of the bearing include (i) healthy, (ii) faulty with an inner race defect, (iii) faulty with an outer race defect, (iv) faulty with a ball defect, and (v) faulty with combined defects on the inner race, the outer race and a ball. The operating rotational speed conditions are (i) increasing speed, (ii) decreasing speed, (iii) increasing then decreasing speed, and (iv) decreasing then increasing speed. Therefore, there are 20 different cases for the setting. To ensure the authenticity of the data, 3 trials are collected for each experimental setting which results in 60 datasets in total. Each dataset contains two channels: 'Channel_1' is vibration data measured by the accelerometer and 'Channel_2' is the rotational speed data measured by the encoder. All these data are sampled at 200,000Hz and the sampling duration is 10 seconds. The CPR (Cycles Per Revolution) of the encoder is 1024.
本数据集包含时变转速工况下，不同健康状态轴承的振动采集信号，总计60个数据集。每个数据集对应两类实验设置：轴承健康状态与转速工况。 轴承健康状态包括：(i) 健康状态；(ii) 内圈故障；(iii) 外圈故障；(iv) 钢球故障；(v) 内圈、外圈及钢球复合故障。 运行转速工况包括：(i) 增速工况；(ii) 减速工况；(iii) 先增速后减速工况；(iv) 先减速后增速工况。 由此共计20种不同的实验设置组合。为保证数据真实性，每种实验设置均开展3次重复采集，最终得到总计60个数据集。 每个数据集包含两个通道：通道1（Channel_1）为加速度传感器采集的振动数据，通道2（Channel_2）为编码器采集的转速数据。所有数据采样率为200000Hz，采样时长为10秒。编码器每转周期数（Cycles Per Revolution，CPR）为1024。
