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:
May. 31, 2011
Filed:
Jun. 05, 2008
Applicant:
Naoki Fujishiro, Kawachi-gun, JP;
Inventor:
Naoki Fujishiro, Kawachi-gun, JP;
Assignee:
Honda Motor Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B 9/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A motor control apparatus includes: an electric motor having an outer rotor and an inner rotor which can alter mutual relative phases; a phase alternation device which alters the relative phase; a phase position sensor which detects a phase position with respect to the relative phase; and a fail-decision control unit which sets the relative phase as a maximum value or a minimum value (that is, a most forcing phase and a most weakening phase) in a phase variable area of the phase alternation device in accordance with a rotation number of the electric motor when the phase position sensor does not work.