Method and apparatus for monitoring the shaft vibration of a rotary machine
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United States of America Patent
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-
Jan 17, 1984
Grant Date -
N/A
app pub date -
Mar 31, 1981
filing date -
Mar 31, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
From the viewpoint of the preventive maintenance operation of a rotary machine, it is a very important subject to monitor the shaft vibration of the rotary machine and grasp the operating state of the machine. This invention relates to input processings in the case of executing the frequency analysis of a shaft vibration signal by digital processings. This invention describes the rotational frequency synchronization of a sampling frequency, the phase synchronization of the rotary machine to a reference phase, the relationship between an analytical wave number and a sample nunber, etc. in that case.
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