ELECTRIC POWER STEERING DEVICE

Title:

ELECTRIC POWER STEERING DEVICE

Document Type and Number:

WIPO Patent Application WO/2019/026351

Kind Code:

A1

Abstract:

[Problem] To provide a high-performance electric power steering device in which steering can be smoothly switched by means of a simple configuration when a driver steers a steering wheel during automatic steering control, and which does not give the driver a feeling of discomfort. [Solution] This electric power steering device has a function of switching a steering control between a manual steering control in which a motor is driven by a first motor current command value calculated on the basis of at least a steering torque, and an automatic steering control in which the motor is driven by a second motor current command value calculated so that the real steering angle follows a target steering angle. The electric power steering device is provided with: a target steering angle correction unit which performs a calculation on the steering torque according to the steering state and the vehicle speed, and outputs a target steering angle correction value; and a correction output unit which corrects the target steering angle with the target steering angle correction value and inputs the corrected target steering angle to the control unit.

Inventors:

KITAZUME TETSUYA (JP)

Application Number:

PCT/JP2018/014851

Publication Date:

February 07, 2019

Filing Date:

April 09, 2018

Export Citation:

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Assignee:

NSK LTD (JP)

International Classes:

B62D6/00; B62D101/00; B62D113/00; B62D119/00; B62D137/00

Domestic Patent References:

WO2014162769A1

2014-10-09

Foreign References:

JPH11245832A	1999-09-14
JP2002002519A	2002-01-09
JP2001039325A	2001-02-13
JP4057955B2	2008-03-05
JP2015093569A	2015-05-18

Other References: