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:
Aug. 10, 2010
Filed:
Apr. 18, 2001
Applicants:
Eiji Sato, Toyota, JP;
Hiroki Ohtani, Aichi, JP;
Inventors:
Eiji Sato, Toyota, JP;
Hiroki Ohtani, Aichi, JP;
Assignees:
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Kabushiki Kaisha Toyota Chuo Kenkyusho, Aichi-gun, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 27/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A motor controller for correcting offset of a drive current of a motor. An offset amount calculating section () calculates offset amounts (Iuofs, Ivofs, Iwofs) of the drive currents (Iu, Iv, Iw) when the motor is being driven. A drive signal correcting section () corrects offset of the drive currents (Iu, Iv, Iw) by correcting the duty ratios of drive signals (Suo, Svo, Swo) based on the offset amounts (Iuofs, Ivofs, Iwofs).