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:
Jun. 26, 2012
Filed:
Jan. 23, 2009
Applicant:
Kiyotada Ito, Kiratsuka, JP;
Inventor:
Kiyotada Ito, Kiratsuka, JP;
Assignee:
Marvell International Ltd., Hamilton, BM;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 6/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
A system includes a speed control module, a repeatable component measuring module, and a repeatable component correcting module. The speed control module controls a speed of a motor based on an error signal generated based on a desired speed and back electromotive force. The error signal includes a repeatable component of noise. The repeatable component measuring module measures the repeatable component. The repeatable component correcting module corrects the repeatable component based on transfer characteristics of the speed control module and the motor and generates a corrected repeatable component.