A few guidelines for using portable vibration monitors

摘要

The development of vibration diagnostics for machinery ramped up in the 1960's after a researcher published a modern method of Fast Fourier Transform. This allowed converting the time histories of acceleration into frequencies with reasonable computing speed. High quality, economical vibration transducers were introduced in the 1970s and 80s along with improvements to various signal-processing techniques such as envelope analysis, cepstrum (a math operation to a signal spectrum), and time synchronous averaging - basically everything needed for an efficient portable vibration data logger to tell what is failing inside industrial machinery.