Vibration diagnosing method and apparatus for a rotary machine

Details Vibration diagnosing method and apparatus for a rotary machine Vibration diagnosing method and apparatus for a rotary machine

1981-03-19

1984-03-06

Wise, Edward J.

Boots, shoes, and leggings

364494, 73462, G06F 1546, G01N 2900

Patent

active

044357702

ABSTRACT:
A method and apparatus for diagnosing a vibration in a rotor of the rotary machine including detecting the number of rotations and the vibration in the rotor when the rotor is rotating, extracting a vibration component synchronized with the number of rotations, determining whether the vibration component is normal or abnormal, calculating an abnormal vibration component through a vector operation by using the detected vibration component and a previously determined rotor vibration component in a normal state of the rotor, when the detected vibration component is judged to be abnormal, normalizing a vibration pattern of the abnormal vibration component, and determining an unbalance originating position in the rotor, which generates the abnormal vibration, by using a comparison of the normalized abnormal vibration pattern with a normalized vibration pattern of a previously determined unbalanced vibration.

REFERENCES:
patent: 3938394 (1976-02-01), Morrow et al.
patent: 4109312 (1978-08-01), Beutel
patent: 4135244 (1979-01-01), Davis
patent: 4153198 (1979-05-01), Eki et al.
patent: 4184205 (1980-01-01), Morrow
patent: 4262536 (1981-04-01), Orem et al.
patent: 4302813 (1981-11-01), Kurihara et al.
Measure Machinery Vibration, A. B. Kaufman, Instruments & Control Systems, Feb. 1975, pp. 59-62.

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