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:
Nov. 20, 2018
Filed:
Oct. 30, 2015
Applicant:
Nsk Ltd., Tokyo, JP;
Inventor:
Atsushi Kojima, Maebashi, JP;
Assignee:
NSK LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B62D 6/00 (2006.01); B62D 5/04 (2006.01); B62D 15/02 (2006.01);
U.S. Cl.
CPC ...
B62D 6/002 (2013.01); B62D 5/0463 (2013.01); B62D 5/0466 (2013.01); B62D 15/025 (2013.01);
Abstract
An electric power steering apparatus which has a steering torque sensor to detect a steering torque, a current command value calculating section to calculate a current command value based on the steering torque, a motor to apply an assist torque, and a motor driving control section to drive and control the motor, comprises: a control function with an input steering angle; and a steering angle estimating/calculating section to calculate a front-wheel estimated steering angle and a rear-wheel estimated steering angle based on a 4 wheel speeds and calculate a 4-wheel estimated steering angle. The 4-wheel estimated steering angle is used for a steering angle control.