PROBLEM TO BE SOLVED: To provide a steering assist device equipped with a motor as a steering assist force generation source and a power cylinder to be driven by oil pressure, which is configured to adjust output of the motor and the power cylinder.SOLUTION: In a steering assist device 1, a curvature calculation portion 71 calculates curvature of a traffic lane on which a vehicle travels. An assist portion 100 comprises a power cylinder portion 14 which generates torque for assisting steering of the vehicle by oil pressure, and a motor 20 which generates torque for assisting steering of the vehicle by electricity. A steering control portion 74, when the power cylinder portion 14 can generate steering assist force by which a steering angle of the vehicle becomes a target steering angle which is set according to curvature, in order for the vehicle to travel on the center of the traffic lane, controls the power cylinder portion 14 so that torque to be generated by the portion is decreased by a prescribed amount and generated, and makes the motor 20 to generate a prescribed amount or less of torque.SELECTED DRAWING: Figure 3
【課題】操舵補助力の発生源としてモータと油圧を動力とするパワーシリンダとを備える操舵補助装置において、モータとパワーシリンダとの出力を調整する。【解決手段】操舵補助装置1において、曲率算出部71は、車両が走行する車線の曲率を算出する。補助部100は、油圧により前記車両の操舵を補助するためのトルクを発生するパワーシリンダ部14と、電力により車両の操舵を補助するためのトルクを発生するモータ20とを備える。操舵制御部74は、車両の操舵角が、車両が車線の中央を走行するために、曲率に応じて定まる目標操舵角となるような操舵補助力をパワーシリンダ部14が発生可能な場合に、パワーシリンダ部14に発生させるトルクを所定量減少させて発生させるとともに、所定量以下のトルクをモータ20に発生させる。【選択図】図3
STEERING ASSIST DEVICE AND STEERING ASSIST METHOD
操舵補助装置及び操舵補助方法
01.02.2018
Patent
Elektronische Ressource
Japanisch
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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