VEHICULAR STEERING CONTROL DEVICE

To accomplish, in a steer-by-wire type steering device, a variable control on a steering angle ratio while suppressing the complication of the control and the increase of a process load.SOLUTION: A steer-by-wire type vehicular steering device includes: an aiming steering torque calculating unit 200 that calculates an aiming steering torque; a steering reaction force control unit 300 that controls a reaction force actuator which applies steering reaction force torque to a steering wheel on the basis of actual steering torque and the aiming steering torque; an aiming turning angle calculating unit 400 that calculates the aiming turning angle of turn wheels 8L and 8R on the basis of the steering angle; a mode changing unit 100 that changes the running mode of a vehicle; a turning angle converting unit 501 that sets a turning angle gain in accordance with the running mode; and a turning angle control unit 500 that controls a turning actuator which turns the turn wheels on the basis of a corrected aiming turning angle obtained by correcting the aiming turning angle by the turning angle gain and of the actual turning angle of the turn wheels.SELECTED DRAWING: Figure 10 【課題】ステアバイワイヤ方式の操舵装置において、制御の複雑化や処理負荷の増大を抑制しつつ舵角比の可変制御を実現する。【解決手段】ステアバイワイヤ方式の車両用操舵制御装置は、目標操舵トルクを演算する目標操舵トルク演算部２００と、実操舵トルク及び目標操舵トルクに基づいてステアリングホイールに操舵反力トルクを付与する反力アクチュエータを制御する操舵反力制御部３００と、操舵角に基づいて転舵輪８Ｌ、８Ｒの目標転舵角を演算する目標転舵角演算部４００と、車両の走行モードを切り替えるモード切替部１００と、走行モードに応じた転舵角ゲインを設定する転舵角変換部５０１と、目標転舵角を転舵角ゲインで補正した補正後目標転舵角、及び転舵輪の実転舵角に基づいて、転舵輪を転舵する転舵アクチュエータを制御する転舵角制御部５００を備える。【選択図】図１０