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. 28, 2004
Filed:
Aug. 26, 2003
Applicant:
Inventor:
Kazuya Higuma, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 1/336 ; H02P 5/00 ;
U.S. Cl.
CPC ...
G03B 1/336 ; H02P 5/00 ;
Abstract
A motor control apparatus capable of accelerating the motor speed to a target speed and stabilizing the motor speed in a short time is disclosed. The motor control apparatus includes a speed detection unit which outputs a signal according to the speed of the motor (or movable unit which uses the motor as a drive source). It also includes a control unit which applies, during the acceleration control of the motor to a target speed, an electric brake to the motor when the speed detected based on the signal from the speed detection unit exceeds the target speed.