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1. (WO2014199882) ELECTRIC POWER STEERING DEVICE

Pub. No.:    WO/2014/199882    International Application No.:    PCT/JP2014/064847
Publication Date: Fri Dec 19 00:59:59 CET 2014 International Filing Date: Thu Jun 05 01:59:59 CEST 2014
IPC: B62D 6/00
B62D 5/04
B62D 101/00
B62D 113/00
B62D 119/00
Applicants: KYB CORPORATION
KYB株式会社
FUJI HEAVY INDUSTRIES LTD.
富士重工業株式会社
Inventors: GOTOU, Hiroyuki
後藤 宏行
SASAKI, Kazuhiro
佐々木 和弘
OKAMOTO, Yuichiro
岡本 雄一郎
YAMAZAKI, Kazuma
山崎 一磨
Title: ELECTRIC POWER STEERING DEVICE
Abstract:
This electric power steering device is equipped with: a command value computation unit that computes a base return command value, which is used for returning a steering wheel toward a neutral position, on the basis of a steering angle detected by a steering angle detector; a first correction gain computation unit that computes a first correction gain, which is used for correcting the base return command value, on the basis of a vehicle speed detected by a vehicle speed detector; and a second correction gain computation unit that computes a second correction gain, which is used for correcting the base return command value, on the basis of a steering torque variation detected by a torque sensor. A return command value is computed by correcting the base return command value using the first correction gain and the second correction gain, and the return command value is added to an assist command value in order to drive an electric motor.