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:
Jan. 20, 1998
Filed:
Jul. 27, 1995
Applicant:
Inventor:
Motoshi Shitanda, Toyonaka, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka-Fu, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01H / ; G01M / ; G05B / ;
U.S. Cl.
CPC ...
364508 ; 364554 ; 73658 ;
Abstract
A vibration analysis method for detecting abnormalities by analyzing a vibration waveform. The method includes the steps of, in a plurality of observation time points {t.sub.j } composed of a number n of specified time points t.sub.j (j=1 to n) counted from a start time point t.sub.0, detecting displacements of a vibration wave f.sub.j (j=1 to n) at the individual time points of the plurality of observation time points, and comparing points in an n-dimensional space composed of the displacements, detected at the individual observation time points, with points in the n-dimensional space of a vibration waveform that are designated as being normal.