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:
Feb. 14, 2012
Filed:
Jan. 15, 2009
Applicant:
Tetsuya Nozawa, Okazaki, JP;
Inventor:
Tetsuya Nozawa, Okazaki, JP;
Assignee:
JTEKT Corporation, Osaka-shi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A01B 69/00 (2006.01); B62D 6/00 (2006.01); B62D 11/00 (2006.01); B62D 12/00 (2006.01); B63G 8/20 (2006.01); B63H 25/04 (2006.01); G05D 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A rotational angle correction controller controls generation of an inverse assist torque using the 'phase deviation' due to the correction of the rotational angle θ, thereby performing the rotational angle correction control to smooth rotation of the motor during two phase drive. In addition, the rotational angle correction controller includes an oscillation detection part that detects the occurrence of oscillation in the steering system. When the level of the detected oscillation exceeds the predetermined level, the correction amount in the rotational angle correction control is reduced.