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:
Aug. 09, 2022
Filed:
May. 12, 2020
Jtekt Corporation, Osaka, JP;
Tomohiro Nakade, Sakurai, JP;
Robert Fuchs, Nara, JP;
JTEKT CORPORATION, Osaka, JP;
Abstract
An electric power steering system includes an electric motor, a rotational angle detection unit, a current detection circuit, a steering torque detection unit, a target torque setting unit, a current command value setting unit, and a current control unit. The target torque setting unit includes a basic target torque setting unit, a first compensation value computation unit, a second compensation value computation unit, and a correction unit. The basic target torque setting unit sets basic target torque for the electric motor. The first compensation value computation unit sets a first compensation value based on steering torque. The second compensation value computation unit computes a second compensation value which is an estimated value of disturbance torque other than the steering torque. The correction unit corrects the basic target torque.