STEERING CONTROL DEVICE AND ELECTRIC POWER STEERING DEVICE

WIPO Patent Application WO/2023/203751

A1

A steering control device (11) comprises: a target steering torque setting unit (22) that sets a target steering torque; a calculation unit (23) that calculates an assist steering torque which causes a steering torque to follow the target steering torque; and a current drive unit (12) that controls a current which flows through a motor to generate the assist steering torque. The target steering torque setting unit is provided with: a first torque calculation unit that determines a first torque on the basis of a post-shift steering angle, which is obtained by multiplying the rotational angular velocity of the motor by a steering angle gain to calculate a first shift amount that is the shift amount of the steering angle of the steering wheel and then adding the first shift amount to the steering angle, and a base map, in which a base torque exhibits the characteristic of gradually increasing in accordance with the post-shift steering angle; a second torque calculation unit that uses the rotational angular velocity of the motor to determine a second torque for imparting hysteresis to the target steering torque; and a target steering torque calculation unit that adds the first torque and the second torque and outputs the target steering torque.

KIMURA MITSUHARU (JP)
TODA TAIZO (JP)
MATSUSHITA MASAKI (JP)

PCT/JP2022/018546

October 26, 2023

April 22, 2022

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MITSUBISHI ELECTRIC CORP (JP)

B62D6/00

WO2015163051A1	2015-10-29
WO2012073760A1	2012-06-07
WO2020100411A1	2020-05-22

JP2002120745A	2002-04-23
JP2018047815A	2018-03-29
JP2017094935A	2017-06-01

NISHIZAWA Kazuyoshi et al. (JP)

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