Steering control method and system for vehicle
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorJang Hyun Jung
Life of this patent
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Abstract
A steering control method and system for a vehicle may determine whether the snow chain has been mounted by comparing the number of times of vibrations of a certain peak or more detected by respective wheel speed sensors with respect to a current vehicle speed with a predetermined value, and selectively controls the operations of an AFS and a RWS according to the position of the wheel on which the snow chain has been mounted, when it is determined that the snow chain has been mounted.
Claims17
A steering control method for a vehicle including a plurality of wheels, the steering control method comprising:
- determining, by a controller, when a snow chain has been mounted by comparing a number of times of vibrations of a predetermined peak or more detected by respective wheel speed sensors with respect to a current vehicle speed, with a predetermined value;
- and
- selectively controlling, by the controller, operations of an Active Front Steering (AFS) and a Rear Wheel Steering (RWS) according to a position of a wheel on which the snow chain has been mounted among the plurality of wheels, when it is determined, by the controller, that the snow chain has been mounted,
- wherein the plurality of wheels includes first and second rear wheels, and
- wherein upon determining that the snow chain has been mounted on the first and second rear wheels, the RWS is controlled not to operate.
A steering control system for a vehicle having a plurality of wheels, the steering control system comprising a controller including:
- an input unit of receiving information related to vibrations of the wheels detected by respective wheel speed sensors;
- a determination unit of determining a vibration frequency of each wheel by counting a number of times of vibrations of a predetermined peak or more with respect to a current vehicle speed, from the information related to the vibrations;
- a determination unit of determining that a snow chain has been mounted on a corresponding wheel when a change rate in the vibration frequency is within a predetermined range by comparing the change rate in the vibration frequency according to a change in the current vehicle speed with the predetermined range;
- and
- an output unit of outputting an operation signal to an Active Front Steering (AFS) and a Rear Wheel Steering (RWS) to selectively control operations of the AFS and the RWS according to a position of the corresponding wheel on which the snow chain has been mounted, among the plurality of wheels,
- wherein the plurality of wheels includes first and second rear wheels, and
- wherein upon determining that the snow chain has been mounted on the first and second rear wheels, the RWS is controlled not to operate.
Dependencies are inferred from the claim text.