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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.:

US 9231508 B1

PDFFull Text
Date of Patent:
Jan. 05, 2016

Filed:

Apr. 07, 2014

Motor driver apparatus and method of controlling the same

Applicants:

Atsushi Muramatsu, Tokyo, JP;

Tomomitsu Ohara, Tokyo, JP;

Inventors:

Atsushi Muramatsu, Tokyo, JP;

Tomomitsu Ohara, Tokyo, JP;

Assignee:

MITSUMI ELECTRIC CO., LTD., Tokyo, JP;

Attorney:

IPUSA, PLLC

Primary Examiner:

Erick Glass

Int. Cl.
CPC ...
H02P 1/00 (2006.01); H02P 1/28 (2006.01); H02P 3/00 (2006.01); H02P 7/28 (2006.01); H02P 7/00 (2006.01); H02P 31/00 (2006.01);
U.S. Cl.
CPC ...
H02P 7/28 (2013.01); H02P 7/0044 (2013.01); H02P 31/00 (2013.01);
Abstract

A motor driver apparatus that is formed of a semiconductor integrated circuit which is supplied with an electric power and drives a direct current motor includes a signal generating part that generates an indication signal for indicating a back electromotive force generation period while the direct current motor generates a back electromotive force, a removing part that detects a voltage variation generated in a power-supply voltage by the back electromotive force generated by the direct-current motor during the back electromotive force generation period indicated by the indication signal, and removes the detected voltage variation, and a limiting part that limits the power-supply voltage so as to be less than a predetermined voltage at a speed higher than that in the removing part.

Find Patent Forward Citations

Muramatsu, Atsushi. (2016). Motor driver apparatus and method of controlling the same (U.S. Patent No. 9231508). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9231508

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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