Method for adjusting a steering system in a vehicle
AssigneeRobert Bosch GmbH
InventorsLutz Buerkle, Michael Weilkes, Tobias Rentschler
Life of this patent
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Abstract
In a method for adjusting a steering system in a vehicle, a setpoint trajectory is produced to which a tolerance corridor is assigned, a basic steering torque for guiding the vehicle within the tolerance corridor being generated. In the event that the vehicle leaves the tolerance corridor, a steering guidance torque which acts upon the vehicle in the direction of the tolerance corridor is superimposed on the basic steering torque.
Claims14
A method for adjusting a steering system in a vehicle, in which a setpoint trajectory adapted to an ambient situation is produced and a steering torque is adjusted in the steering system so that the vehicle follows the setpoint trajectory, the method comprising:
- assigning a tolerance corridor to the setpoint trajectory;
- producing a basic steering torque for guiding the vehicle within the tolerance corridor, wherein the basic steering torque is calculated as a function of vehicle dynamics variables, as a value that compensates for a restoring torque prevailing in the steering system to keep the vehicle along the setpoint trajectory in the absence of any driver steering input;
- and
- conditional upon the vehicle leaving the tolerance corridor:
- calculating a steering guidance torque as a function of the vehicle dynamics variable, as a value that acts upon the vehicle in a direction of the tolerance corridor to guide the vehicle back towards the tolerance corridor;
- and
- superimposing the steering guidance torque on the basic steering torque and a driver input torque to calculate a total torque as a sum of the steering guidance torque, the basic steering torque, and the driver input torque.
A regulating and control unit adapted to:
- assign a tolerance corridor to a setpoint trajectory of a vehicle;
- produce a basic steering torque to guide the vehicle within the tolerance corridor, wherein the basic steering torque is calculated as a function of vehicle dynamics variables, as a value that compensates for a restoring torque prevailing in a steering system of the vehicle to keep the vehicle along the setpoint trajectory in the absence of any driver steering input;
- and
- conditional upon the vehicle leaving the tolerance corridor:
- calculate a steering guidance torque as a function of the vehicle dynamics variable, as a value that acts upon the vehicle in a direction of the tolerance corridor to guide the vehicle back towards the tolerance corridor;
- and
- superimpose the steering guidance torque on the basic steering torque and a driver input torque to calculate a total torque as a sum of the steering guidance torque, the basic steering torque, and the driver input torque.
A steering system in a vehicle, comprising:
- a steering grip;
- a steering shaft coupled to the steering grip;
- a steering linkage and a steering gear coupled to the steering shaft;
- and
- a regulating and control unit adapted to:
- assign a tolerance corridor to a setpoint trajectory of a vehicle;
- produce a basic steering torque to guide the vehicle within the tolerance corridor, wherein the basic steering torque is calculated as a function of vehicle dynamics variables, as a value that compensates for a restoring torque prevailing in the steering system to keep the vehicle along the setpoint trajectory in the absence of any driver steering input;
- and
- conditional upon the vehicle leaving the tolerance corridor:
- calculate a steering guidance torque as a function of the vehicle dynamics variable, as a value that acts upon the vehicle in a direction of the tolerance corridor to guide the vehicle back towards the tolerance corridor;
- and
- superimpose the steering guidance torque on the basic steering torque and a driver input torque to calculate a total torque as a sum of the steering guidance torque, the basic steering torque, and the driver input torque.
Dependencies are inferred from the claim text.