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:
Nov. 20, 2018
Filed:
Jun. 15, 2017
Applicants:
Fumihiro Shimizu, Kanagawa, JP;
Norihiro Yamamoto, Kanagawa, JP;
Inventors:
Fumihiro Shimizu, Kanagawa, JP;
Norihiro Yamamoto, Kanagawa, JP;
Assignee:
RICOH COMPANY, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 6/18 (2016.01); G03G 15/00 (2006.01); H02P 21/18 (2016.01);
U.S. Cl.
CPC ...
G03G 15/50 (2013.01); H02P 21/18 (2016.02);
Abstract
An angle estimator includes correction means for correcting a phase of an error parameter to obtain a corrected error parameter and estimation means for calculating an estimated speed and an estimated angle of the motor based on the corrected error parameter. The error parameter is a function of an angle error representing a difference between an actual angle and an estimated angle of a motor.
Shimizu, Fumihiro. (2018). Angle estimator, motor controller, motor driver, motor driving system, image forming apparatus, and conveyance device (U.S. Patent No. 10133223). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10133223
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile