Fault inspection system for rotary machines

Details Fault inspection system for rotary machines Fault inspection system for rotary machines

1989-09-08

1991-01-29

Orsino, Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

73660, 364508, G08B 2100

Patent

active

049889796

ABSTRACT:
A fault inspection system for the rotary machine is disclosed in which the rotational speed or a physical quantity related thereto of the rotary machine drive with changing rotational speeds is detected as a first detection signal, and the sound pressure or mechanical vibration from the rotary machine as a second signal. A reference line representing the relationship between the values of the first and second detection signals is determined on the basis of the same values. A fault of the rotary machine is detected on the basis of a third detection signal associated with an area corresponding to the region where the first or second detection signal exceeds the reference line.

REFERENCES:
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patent: 4408294 (1983-10-01), Imam
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patent: 4558311 (1985-12-01), Forsgren et al.
patent: 4751657 (1988-06-01), Imam et al.
patent: 4788651 (1988-11-01), Parker et al.

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