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. 18, 2025
Filed:
May. 10, 2024
Nsk Steering & Control, Inc., Tokyo, JP;
NSK STEERING & CONTROL, INC., Tokyo, JP;
Abstract
An electric power steering device including: a motor configured to generate a steering assist force; a current command value calculation unit configured to calculate a current command value to control driving current of the motor; a current control unit configured to output a first voltage command value, based on current deviation of a measured value of the driving current to the current command value; a first gain setting unit configured to set a first gain depending on rotational velocity of the motor; a disturbance voltage suppression unit configured to calculate a third voltage command value by adding output from a first delay element to a second voltage command value obtained by limiting the first voltage command value by the first gain and input the third voltage command value to the first delay element; and a driving circuit configured to drive the motor, based on the third voltage command value.