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. 07, 2020
Filed:
Jun. 09, 2016
Applicant:
Fanuc Corporation, Minamitsuru-gun, Yamanashi, JP;
Inventors:
Assignee:
FANUC CORPORATION, Yamanashi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D 18/00 (2006.01); G01D 5/12 (2006.01); G01D 5/347 (2006.01); G01D 5/244 (2006.01); G01D 5/245 (2006.01);
U.S. Cl.
CPC ...
G01D 18/00 (2013.01); G01D 5/12 (2013.01); G01D 5/2452 (2013.01); G01D 5/24461 (2013.01); G01D 5/3473 (2013.01);
Abstract
A rotation angle detector comprises a rotating body including a plurality of track parts, and an abnormality detecting unit for detecting an abnormality based on signals generated in detection units. The detection units generate a first signal based on a first track part and a second signal based on a second track part. The abnormality detecting unit includes a judgement unit for judging an occurrence of an abnormality when the difference between the fluctuation range of the first signal and the fluctuation range of the second signal is larger than a predetermined fluctuation range judgement value.