Vibration monitor for rotating machines using average frequency technique.

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概要

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• A vibration monitoring technique has been developed which can be applied to con-tinuous monitoring and to patrol checking of many kinds of rotating machines in nuclear power plants. In this method, the vibrating condition in such equipment are represented in terms of two parameters, i.e. a vibration amplitude (RMS value) and an average fre-quency. The average frequency is defined as the root value of the second moment of the vibration frequency weighted by the power spectrum. The average frequency can be calculated by simple analogue circuits and does not need the spectrum analysis. Using these two parameter, not only the occurrence of abnormal vibration but also the type of vibration can be detected.

• 一般社団法人 日本原子力学会の論文

著者

• Izumi Shigeru

  Energy Research Laboratory Hitachi Ltd.

• IZUMI Masayuki

  Energy Research Laboratory, Hitachi Ltd.

• YAMADA Izumi

  Energy Research Laboratory, Hitachi Ltd.

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