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:
Sep. 27, 2011
Filed:
Jan. 16, 2009
Tetsuya Nozawa, Okazaki, JP;
Hirozumi Eki, Okazaki, JP;
Tetsuya Nozawa, Okazaki, JP;
Hirozumi Eki, Okazaki, JP;
JTEKT Corporation, Osaka-shi, JP;
Abstract
The rotational angle correction controller includes a second correction amount-computing part that computes a second correction amount εfor correcting the rotational angle θ such that the phase is shifted in the steering operation direction, and the rotational angle correction controller performs the rotational angle correction by adding the computed second correction amount εto the rotational angle θ. Further, the rotational angle correction controller includes a stuck steering wheel determining part that detects the significant reduction in the follow-up performance of the motor with respect to the steering operation that occurs due to the existence of the deceleration section caused by execution of the above-described electric current restriction, that is, the occurrence of the stuck steering wheel. When the occurrence of the stuck steering wheel is detected, the second correction amount-computing part changes the second correction amount εto a value (ε') larger than the normal value.