公开(公告)号：US20200269905A1

公开(公告)日：2020-08-27

申请号：US16630664

申请日：2019-06-07

Applicant: NSK LTD.

Inventor： Takayoshi SUGAWARA ,  Takuya MASUKO ,  Tomoki FUKUDA ,  Hideki SAWADA

IPC: B62D5/04 ,  B62D5/00 ,  B62D6/00 ,  B62D15/02

Abstract: An electric power steering system is provided that is capable of performing assist control in which a change in a steering feel is reduced. The electric power steering system includes a current command value calculating unit configured to output a current command value Iref1 in accordance with steering torque and a vehicle speed on the basis of an assist map. The current command value calculating unit includes a vibration component reducing section configured to reduce a vibration component resulting from vibrations for warning that have been transmitted to a steering wheel and included in the steering torque.