Steer-by-wire system and method for operating a steer-by wire system
AssigneeVolkswagen Aktiengesellschaft
InventorJohannes Maria Schäfer
Life of this patent
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Abstract
The invention relates to a steer-by-wire system, that includes a steering mechanism, a sensor for detecting a driver request, a steering control device, power electronics, an electric servomotor, a steering rack that can be moved by the servomotor and an actor for generating a feedback torque (MFF) at the steering mechanism as a function of a steering rack position, wherein the steering control unit is configured in such a way so as to subtract, based on the feedback torque (MFF), at least a portion from a driver request determined based on sensor data, and a method for operating a steer-by-wire system.
Claims18
A steer-by-wire system, comprising:
- a steering mechanism;
- a sensor for detecting a steering request;
- a steering rack, configured to be moved by a servomotor;
- and
- an actor for generating a feedback torque (MFF) at the steering mechanism as a function of a changeable steering rack position,
- a steering control unit, configured to
- detect requirements (FAS) of a driver assistant system,
- determine a hand torque and the generated feedback torque, and
- subtract at least a portion of feedback torque (MFF) from the hand torque (MH) from the steering request to reduce haptic feedback on the steering mechanism.
A method of operating a steer-by-wire system, comprising:
- detecting, via a sensor, a steering request at a steering mechanism;
- generating, via an actor, a feedback torque (MFF) at the steering mechanism as a function of a changeable steering rack position;
- detecting, via the steering control unit, requirements (FAS) of a driver assistant system;
- determining, via a steering control unit, a hand torque and the generated feedback torque, (MFF);
- and
- subtracting, via the steering control unit, at least a portion of feedback torque (MFF) from the hand torque (MH) from the steering request to reduce haptic feedback on the steering mechanism.
A method of operating a steer-by-wire system, comprising:
- detecting, via a sensor, a steering request at a steering mechanism of a driver-assisted system;
- detecting, via a steering control unit, requirements (FAS) of the driver-assisted system;
- generating, via an actor, a feedback torque (MFF) at the steering mechanism as a function of a changeable steering rack position;
- determining, via the steering control unit, a hand torque and the generated feedback torque, (MFF);
- and
- subtracting, via the steering control unit, at least a portion of feedback torque (MFF) from the hand torque (MH) from the steering request to reduce haptic feedback on the steering mechanism.
Dependencies are inferred from the claim text.