The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 21, 2018
Filed:
Aug. 18, 2015
Kobe Steel, Ltd., Hyogo, JP;
Kaname Araki, Kobe, JP;
Eiji Takahashi, Kobe, JP;
Tsuyoshi Ashida, Kobe, JP;
Shugo Takaki, Takasago, JP;
Yasuharu Matsumoto, Takasago, JP;
Kobe Steel, Ltd., Hyogo, JP;
Abstract
A rotating machine abnormality diagnosing apparatus for diagnosing an abnormality in a rotating machine includes: an analyzing part which performs a time-frequency analysis to a signal S representing intensity and time relationship of an elastic wave generating in the rotating machine; an extracting part which extracts second data representing intensity and time relationship of a predetermined frequency component from first data obtained by the time-frequency analysis; and a determining part which determines that a first rotor and a second rotor are in contact with each other when the second data contains intensity variation having a cycle represented by Tb=Ta, in which a rotational cycle of the first rotor is denoted by T, a rotational cycle of the second rotor is denoted by T, and a ratio of a number of protrusions to a number of recesses is denoted by a:b.