Method and apparatus for monitoring the shaft vibration of a rot

Details Method and apparatus for monitoring the shaft vibration of a rot Method and apparatus for monitoring the shaft vibration of a rot

1981-03-31

1984-01-17

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

73660, 340681, 364179, 364508, G08B 2300

Patent

active

044266413

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.

REFERENCES:
patent: Re30298 (1980-06-01), Keller
patent: 3681978 (1972-08-01), Mathias et al.
patent: 3733892 (1973-05-01), Rennick
patent: 3758758 (1973-09-01), Games et al.
patent: 4302813 (1981-11-01), Kurihara et al.
patent: 4352293 (1982-10-01), Kurihara et al.

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