Data were sampled synchronously from accelerometers mounted on both the input and output shaft retaining plates. An attached tachometer generates 10 pulses per revolution providing very accurate zero crossing information.
Data are provided in .mat and .csv files, with three columns - the first column is input voltage, second is output voltage, and the third is tachometer.
Note that the above data set is unlabeled. A new (November 2009) 480 MB data set with labels is available for download here. These data are very similar to those used in the competition. These data may be used to develop and evaluate new algorithms.