Method and device for controlling the speed of a vehicle
AssigneeRobert Bosch GmbH
InventorsJens Guenthner, Hans Schulte, Boris Knobloch, Mario Kustosch, Christian Muehlbauer
Life of this patent
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Abstract
A method and a device for controlling the speed of a vehicle are described. In the transition from a dynamic to a steady-state operating state, the initially accepted setpoint value is corrected using a correcting value which depends on the system deviation prevailing at the time when the longitudinal acceleration of the vehicle has reached, exceeded, or fallen below a predetermined threshold value.
Claims18
A method for controlling a drive motor of a vehicle having a vehicle speed controller, the method comprising:
- controlling a drive motor of the vehicle as a function of a control deviation between a setpoint value for the vehicle speed and an actual vehicle speed;
- and
- modifying the setpoint value for the vehicle speed using a modifying value that depends on the control deviation prevailing at a time when an acceleration of the vehicle, for a transition from an acceleration operating state of the vehicle speed controller to a steady-state operating state, has a negative slope and reached or dropped below a predefined threshold value, or when an acceleration of the vehicle, for a transition from a deceleration operating state of the vehicle speed controller to said steady-state operating state, has a positive slope and reached or exceeded a predefined threshold value.
A device for controlling the speed of a vehicle, comprising:
- an arrangement configured to specify a setpoint value for a vehicle speed;
- an arrangement configured to determine an actual vehicle speed;
- a detector configured to detect a longitudinal acceleration of the vehicle;
- an arrangement configured to control a drive motor of the vehicle as a function of a control deviation between the setpoint value for the vehicle speed and the actual vehicle speed;
- and
- an arrangement configured to modify, in a transition from a dynamic operating state to a steady-state operating state, the setpoint value for the vehicle speed using a modifying value that depends on the control deviation prevailing at a time when an acceleration of the vehicle, for a transition from an acceleration operating state to said steady-state operating state, has a negative slope and reached or dropped below a predefined threshold value, or when an acceleration of the vehicle, for a transition from a deceleration operating state to said steady-state operating state, has a positive slope and reached or exceeded a predefined threshold value.
Dependencies are inferred from the claim text.