Study on full period resampling technology for vibration signal on rotating machinery

XV Shuijun, JIANG Zhinong
（Diagnosis and SelfRecovery Engineering Research Center,
Beijing University of Chemical Technology, Beijing 100029, China）

Abstract: Aiming at improving the accuracy of vibration signal analysis, a method based on the full period resampling technology was established. The full period sampling time calculated by the frequency synchronously sampled with the vibration signal was used to resample the waveform. And each channel was compensated with the error phase generated by loop sampling between channels. The study shows that this method can resample the vibration signal in periods correctly and increase the accuracy of amplitude and phase. Because of its low hardware requirement and high accuracy, it can be widely used in online monitoring of large rotating machinery.
Key words: vibration signal; key phase; phase compensation; full period resampling