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:
Jun. 23, 2026
Filed:
Dec. 21, 2022
Nsk Steering & Control, Inc., Tokyo, JP;
NSK STEERING & CONTROL, INC., Tokyo, JP;
Abstract
According to an aspect, a control device of a vehicle steering system includes a turning motor that turns a turning wheel in accordance with a steering angle of a steering wheel and a turning angle controller configured to generate, based on a turning angle target value, a motor current command value of current to be supplied to the turning motor. The turning angle controller includes: a feedforward compensator configured to improve followability of the turning angle with respect to the turning angle target value; a feedback compensator configured to control the motor current command value based on a deviation between an output value of the feedforward compensator and an actual turning angle of the turning wheel; and a disturbance observer configured to estimate a disturbance component acting on an inertial system including the turning motor and to remove the disturbance component from the motor current command value.