Contact vibration detection device, rotary machine including the same, and contact vibration detection method
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United States of America Patent
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Dec 13, 2022
Grant Date -
N/A
app pub date -
Jan 17, 2019
filing date -
Mar 29, 2018
priority date (Note) -
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Abstract
A contact vibration detection device 100 for detecting contact vibration due to contact between a rotational shaft 12 and a stationary part 13 includes: a rotation waveform determination unit 101 configured to determine a rotation waveform of the rotational shaft 12 based on displacement of the rotational shaft 12 during rotation; a parameter change detection unit 102 configured to detect a change in a parameter of at least one of an effective value of the rotation waveform or a phase angle of the rotation waveform; and a contact vibration determination unit 103 configured to determine whether the contact vibration occurs based on presence or absence of the change in the parameter.
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