Method for steering a vehicle using a power-assisted steering system
AssigneeRobert Bosch GmbH
InventorsPeter Dominke, Chi-Thuan Cao, Wolfgang Pfeiffer, Klaus-Dieter Leimbach, Werner Harter, Peter Blessing, Herbert Lohner
Life of this patent
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Abstract
A method for steering a vehicle and a steering system are provided, in which a variable torque support of the driver's steering wish and intervention in the position of the steered wheels triggered by a driving dynamics regulator are implementable without mutually interfering with one another. In addition, further additional functions, such as the lane guidance system of the vehicle, may be integrated into a steering system easily and either with or without compensation of the steering feel at the steering wheel.
Claims14
A method of steering a vehicle, the method comprising:
- detecting a steering wheel angle;
- modifying the steering wheel angle as a function of a driving speed to provide a modified steering wheel angle;
- determining a correction steering wheel angle as a function of driving dynamics of the vehicle;
- superimposing the modified steering wheel angle and the correction steering wheel angle to form a setpoint steering angle;
- detecting a position of steered wheels;
- forming an angle difference between the setpoint steering angle and the position of the steered wheels;
- regulating the position of the steered wheels as a function of the angle difference;
- and
- compensating for the correction steering wheel angle at a steering column.
A computer program comprising:
- program code operable to perform the following:
- detecting a steering wheel angle;
- modifying the steering wheel angle as a function of a driving speed to form a modified steering wheel angle;
- determining a correction steering wheel angle as a function of driving dynamics of the vehicle;
- superimposing the modified steering wheel angle and the correction steering wheel angle to form a setpoint steering angle;
- detecting a position of steered wheels;
- forming an angle difference between the setpoint steering angle and the position of the steered wheels;
- regulating the position of the steered wheels as a function of the angle difference;
- and
- compensating for the correction steering wheel angle at a steering column.
A control device for controlling a steering system of a vehicle, the control device comprising:
- an arrangement operable to perform the following:
- detecting a steering wheel angle;
- modifying the steering wheel angle as a function of a driving speed to form a modified steering wheel angle;
- determining a correction steering wheel angle as a function of driving dynamics of the vehicle;
- superimposing the modified steering wheel angle and the correction steering wheel angle to form a setpoint steering angle;
- detecting a position of steered wheels;
- forming an angle difference between the setpoint steering angle and the position of the steered wheels;
- regulating the position of the steered wheels as a function of the angle difference;
- and
- compensating for the correction steering wheel angle at a steering column.
A steering system for a vehicle, the steering system comprising:
- a steering wheel positioned on a steering column;
- a steering gearbox;
- one of a third rotational angle sensor and a first torque sensor mounted on the steering column;
- a steering wheel motor for acting on the steering wheel column via a superposition gearbox;
- a steering motor for acting on steered wheels;
- one of a hydraulic and an electrical steering actuator;
- a second rotational angle sensor for measuring a position of the steered wheels;
- and
- a control arrangement operable to perform the following:
- detecting a steering wheel angle;
- modifying the steering wheel angle as a function of a driving speed to form a modified steering wheel angle;
- determining a correction steering wheel angle as a function of driving dynamics of the vehicle;
- superimposing the modified steering wheel angle and the correction steering wheel angle to form a setpoint steering angle;
- detecting a position of steered wheels;
- forming an angle difference between the setpoint steering angle and the position of the steered wheels;
- regulating the position of the steered wheels as a function of the angle difference;
- and
- compensating for the correction steering wheel angle at a steering column.
Dependencies are inferred from the claim text.