Apparatus and Method for Damping a Motor-Assisted Steering System of a Vehicle
AssigneeRobert Bosch GmbH
InventorsAndreas Stuetz, Marcel Gross, Bastian Beck, Joerg Strecker
Life of this patent
Estimating the term…
Abstract
In a vehicle, apparatus, and method for damping a steering system, which is assisted by a motor of the vehicle, and in which the motor assists a driver of the vehicle in moving a toothed rack of the steering system in a motor mode of the motor and the motor is rotated in a generator mode of the motor by a movement of the toothed rack, a speed of the motor is determined. The damping is performed if the speed exceeds a first threshold value and the motor is operating as a generator, and the damping is suppressed if the motor is operating as a motor or the speed falls below the first threshold value or a second threshold value.
Claims9
A method for damping a steering system that is assisted by a motor of a vehicle in which the motor is configured to, in a motor mode, assist a driver of the vehicle in moving a toothed rack of the steering system and, in a generator mode, be rotated by a movement of the toothed rack, the method comprising:
- determining a speed of the motor;
- performing a damping if the speed exceeds a first threshold value and the motor is operating in the generator mode;
- and
- suppressing the damping if the motor is in the motor mode or the speed falls below the first threshold value or a second threshold value.
An apparatus for damping a steering system of a vehicle, said steering system including a toothed rack, the apparatus comprising:
- a sensor configured to sense one of (i) a steering torque that a driver of the vehicle generates to move the toothed rack and (ii) a steering force that the driver of the vehicle generates to move the toothed rack;
- a motor configured to assist the driver in moving the toothed rack of the vehicle;
- and
- a computing device configured to:
- determine a speed of the motor;
- perform a damping if the speed exceeds a first threshold value and the motor is operating in the generator mode;
- and
- suppress the damping if the motor is in the motor mode or the speed falls below the first threshold value or a second threshold value.
A vehicle comprising:
- a steering system having a toothed rack;
- and
- an apparatus for damping the steering system, the apparatus comprising:
- a sensor configured to sense one of (i) a steering torque that a driver of the vehicle generates to move the toothed rack and (ii) a steering force that the driver of the vehicle generates to move the toothed rack;
- a motor configured to assist the driver in moving the toothed rack of the vehicle;
- and
- a computing device configured to:
- determine a speed of the motor;
- perform a damping if the speed exceeds a first threshold value and the motor is operating in the generator mode;
- and
- suppress the damping if the motor is in the motor mode or the speed falls below the first threshold value or a second threshold value.
Dependencies are inferred from the claim text.