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:
Sep. 14, 2021
Filed:
Nov. 26, 2018
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Jumpei Ashida, Kawasaki, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 21/14 (2016.01); H02P 21/26 (2016.01); H02P 6/12 (2006.01); H02P 6/28 (2016.01); H02P 25/089 (2016.01);
U.S. Cl.
CPC ...
H02P 21/14 (2013.01); H02P 6/28 (2016.02); H02P 21/26 (2016.02); H02P 6/12 (2013.01); H02P 25/089 (2016.02);
Abstract
A parameter concerning rotation of a motor is estimated (first estimation). A parameter concerning rotation of the motor is estimated, based on a model representing a prescribed change in a rotation speed of the motor (second estimation). It is determined whether an anomaly has occurred in the rotation of the motor, based on the parameter estimated in the first estimation and the parameter estimated in the second estimation.