公开(公告)号：US10112643B2

公开(公告)日：2018-10-30

申请号：US15115908

申请日：2015-02-04

Applicant: KYB Corporation

Inventor： Hiroyuki Gotou ,  Noboru Yoshida ,  Kenji Nishikubo ,  Yuichiro Okamoto ,  Kouichi Yamashina

IPC: B62D5/04 ,  B62D15/02

Abstract: An electric power steering device includes a phase advance correction unit configured to advance a phase of a steering torque signal detected by a torque sensor detecting a steering torque input from a steering wheel, a specific frequency extraction unit configured to extract a component in a specific frequency band out of the steering torque signal detected by the torque sensor, a gain multiplication unit configured to correct a steering torque signal computed on the basis of an output signal of the phase advance correction unit and an output signal of the specific frequency extraction unit such that the steering torque signal reaches a limit value set by a limiter by multiplying the steering torque signal by a gain, and an addition unit configured to add an assist correction command value calculated on the basis of an output signal output from the gain multiplication unit to the assist command value.