公开(公告)号：US10029726B2

公开(公告)日：2018-07-24

申请号：US15115909

申请日：2015-02-04

Applicant: KYB Corporation

Inventor： Hiroyuki Gotou ,  Hisazumi Ishikawa ,  Kazuhiro Sasaki ,  Yuichiro Okamoto ,  Nobuyuki Kimura ,  Takayuki Nagase ,  Kazuma Yamazaki

IPC: B62D5/04 ,  B62D6/02 ,  B62D6/10

Abstract: A electric power steering device includes a basic return command value calculation unit configured to calculate a basic return command value in a direction to return a steering wheel to a neutral position on the basis of a steering angle of the steering wheel, a return command value calculation unit configured to calculate a return command value by correcting the basic return command value by the first correction gain, and an opposite return command value calculation unit configured to calculate an opposite return command value in a direction not to return the steering wheel to the neutral position on the basis of an angular acceleration of an electric motor. A correction return command value is calculated on the basis of the return command value and the opposite return command value and the electric motor is driven by adding the correction return command value to the assist command value.

公开(公告)号：US09481392B2

公开(公告)日：2016-11-01

申请号：US14897236

申请日：2014-06-04

Applicant: KYB Corporation ,  FUJI HEAVY INDUSTRIES LTD.

Inventor： Hiroyuki Gotou ,  Kazuhiro Sasaki ,  Yuichiro Okamoto ,  Kazuma Yamazaki

IPC: B62D5/04

CPC classification number: B62D5/0466

Abstract: An electric power steering device includes a basic return command value calculation unit configured to calculate a basic return command value in a direction returning the steering wheel to a neutral position, on the basis of detection results of a steering angle detector detecting a steering angle of the steering wheel, a first correction gain calculation unit configured to calculate a first correction gain correcting the basic return command value, on the basis of detection results of a vehicle speed detector detecting vehicle speed, and a second correction gain calculation unit configured to calculate a second correction gain correcting the basic return command value, on the basis of a change amount of the steering torque detected by the torque sensor. The basic return command value is corrected by the first and second correction gains so as to calculate a return command value. The return command value is added to the assist command value so as to drive the electric motor.

Abstract translation: 电动助力转向装置包括基本返回指令值计算单元，其被配置为基于检测到转向角的转向角的检测结果来计算将方向盘返回到中立位置的方向上的基本返回指令值 方向盘，第一校正增益计算单元，被配置为基于车速检测器检测车速的检测结果计算校正基本返回指令值的第一校正增益;以及第二校正增益计算单元，被配置为计算第二校正增益计算单元， 基于由转矩传感器检测出的转向转矩的变化量来校正基本返回指令值的校正增益。 通过第一和第二校正增益来校正基本返回指令值，以计算返回指令值。 返回指令值被添加到辅助指令值，以驱动电动机。

公开(公告)号：US10106191B2

公开(公告)日：2018-10-23

申请号：US15116507

申请日：2015-02-04

Applicant: KYB Corporation

Inventor： Hiroyuki Gotou ,  Noboru Yoshida ,  Yuichiro Okamoto ,  Nobuyuki Kimura ,  Takayuki Nagase ,  Kazuma Yamazaki

IPC: B62D5/04

Abstract: An electric power steering device includes a basic return command value calculation unit configured to calculate a basic return command value in a direction to return a steering wheel to a neutral position on the basis of a steering angle of a steering wheel, a turn/return determination unit configured to determine the turn and the return of the steering wheel, a gradually changing return command value calculation unit configured to calculate a gradually changing return command value, the gradually changing return command value gradually increasing, while the return of the steering wheel is determined by the turn/return determination unit, and a return command value calculation unit configured to calculate a return command value by adding the gradually changing return command value to the basic return command value. The electric motor is driven by adding the return command value to the assist command value.