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:
Mar. 17, 2015
Filed:
Sep. 28, 2011
Applicant:
Hiroshi Suzuki, Okazaki, JP;
Inventor:
Hiroshi Suzuki, Okazaki, JP;
Assignee:
JTEKT Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B62D 5/04 (2006.01); H02P 29/02 (2006.01); H02P 21/00 (2006.01);
U.S. Cl.
CPC ...
B62D 5/0472 (2013.01); B62D 5/0403 (2013.01); H02P 29/025 (2013.01); H02P 21/0003 (2013.01);
Abstract
An electric motor has a stator and a rotor that are used in common between two systems. An ECU controls the motor torque by supplying drive electric power to the motor coils independently of each other. When the ECU determines that the vehicle is traveling on a uneven road, the ECU causes the electric motor to perform a braking operation by short-circuiting at least two phases of the electric motor of one of the two systems that is other than the system that is executing a torque control of controlling the assist torque according to the steering torque and the vehicle speed.