Rear wheel steering apparatus and control method thereof
AssigneeHl Mando Corporation
InventorInhyun KIM
Life of this patent
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Abstract
The present disclosure relates to a rear wheel steering apparatus and a control method thereof, which can detect stick-slip that may occur during the operation of a rear wheel steering (RWS) system, thereby controlling the performance of a motor in a variable manner, and can control the motor to operate in a limited operation mode only when the stick-slip has occurred during the operation of the RWS system, thereby reducing the noise generated by the stick-slip and the shock transmitted to a vehicle.
Claims26
A rear wheel steering apparatus for controlling a steering angle of rear wheels based on a command received from a vehicle electronic control unit (ECU), the rear wheel steering apparatus comprising:
- a motor for moving a rear wheel steering rail connected to the rear wheels in left and right directions;
- and
- a rear wheel steering ECU configured to control the motor to move the rear wheel steering rail to a target movement distance based on the command and to determine whether stick-slip occurs based on the target movement distance and an actual movement distance of the rear wheel steering rail.
A control method of a rear wheel steering apparatus, the rear wheel steering apparatus configured to control a steering angle of rear wheels based on a command received from a vehicle electronic control unit (ECU) and comprising:
- a motor for moving a rear wheel steering rail connected to the rear wheels in left and right directions;
- and a rear wheel steering ECU for controlling the motor to move the rear wheel steering rail to a target movement distance based on the command, the control method comprising determining, by the rear wheel steering ECU, whether stick-slip occurs based on the target movement distance and an actual movement distance of the rear wheel steering rail.
A rear wheel steering apparatus for controlling a steering angle of rear wheels based on a command received from a vehicle electronic control unit (ECU), the rear wheel steering apparatus comprising:
- a motor for moving a rear wheel steering rail connected to the rear wheels in left and right directions;
- and
- a rear wheel steering ECU configured to:
- determine whether stick-slip occurs based on a target movement distance and an actual movement distance of the rear wheel steering rail, and
- control the motor to operate in a limited operation mode, in which the rear wheel steering rail moves by a limited movement distance smaller than the target movement distance, in response to determining that the stick-slip has occurred.
Dependencies are inferred from the claim text.