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:
Feb. 08, 2022
Filed:
Sep. 04, 2017
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25J 9/00 (2006.01); B25J 9/16 (2006.01); B25J 19/06 (2006.01); G05B 23/02 (2006.01);
U.S. Cl.
CPC ...
B25J 9/1674 (2013.01); B25J 9/1692 (2013.01); B25J 9/1694 (2013.01); B25J 19/06 (2013.01); G05B 23/0218 (2013.01);
Abstract
An abnormality detection method of an encoder includes an output step, a control step, an information acquisition step, and an abnormality determination step. The abnormality determination step compares command position information with detection position information of a motor calculated based on an output signal, and determines that the encoder is abnormal in a case where a difference between the command position information and the detection position information of the motor is equal to or more than a predetermined value.