Driver assistance system for a motor vehicle

• US 9,718,470 B2
• Filed: 02/04/2008
• Issued: 08/01/2017
• Est. Priority Date: 08/05/2005
• Status: Active Grant

• Current Assignee: Bayerische Motoren Werke AG
• Original Assignee: Bayerische Motoren Werke AG
• Inventors: Mayser, Christoph, Naab, Karl
• Primary Examiner(s): Dager, Jonathan M
• Application Number:
  US12/025,410
• Publication Number:
  US 20080195292A1
• Time in Patent Office: 3,466 Days
• Field of Search: 701 1, 701 2, 701 4, 701 5, 701 8- 10, 701 19- 22, 701 36, 701 48, 701 50- 60, 701 65- 72, 701 78, 701 79, 701 82- 99, 701101-105, 701110
• CPC Class Codes: B60W 2720/106 Longitudinal acceleration
• CPC Class Codes: B60W 30/16 Control of distance between vehicles, e.g. keeping a distance to preceding vehicle
• CPC Class Codes: B60W 30/188 Controlling power parameters of the driveline, e.g. determining the required power
• CPC Class Codes: B60W 40/107 Longitudinal acceleration

Abstract

A driver assistance system for a motor vehicle has a controller within a speed and/or distance regulator, which controller is used for the regulation of the acceleration of the motor vehicle according to a setpoint acceleration. The driver assistance system also includes an input coupling unit for coupling an additional acceleration that can be predefined by the driver of the motor vehicle into the system.

Claims

1. A driver assistance system for a motor vehicle, comprising:

a controller configured to control an acceleration of the motor vehicle according to a setpoint acceleration; and

an input coupling unit configured to couple a driver-generated increment of additional acceleration predefinable by the driver of the vehicle prior to an acceleration event into the driver assistance system,

wherein

the controller comprises an acceleration controller, which receives the setpoint acceleration; and

the input coupling unit is operatively configured upstream of the acceleration controller and generates, in response to operation of an operating element by the driver during the acceleration event, the setpoint acceleration by superimposing at least a portion of the predefined increment of additional acceleration on a system acceleration of the driver assistance system, the portion of the predefined increment of additional acceleration coupled into the driver assistance system being proportional to an amount of actuation of the operating element by the driver during the acceleration event.

2. The driver assistance system according to claim 1, wherein the acceleration controller comprises a disturbance monitor operatively configured to effect the setpoint acceleration.

3. The driver assistance system according to claim 1, wherein the controller comprises a speed controller, which outputs a system acceleration;

and

wherein the input coupling unit is arranged downstream of the speed controller and is configured to generate the setpoint acceleration by superimposing the additional acceleration predefinable by the driver of the vehicle on the system acceleration.

4. The driver assistance system according to claim 1, wherein the controller further comprises a speed controller configured to output the system acceleration, and wherein the input coupling unit is operatively arranged downstream of the speed controller.

5. The driver assistance system according to claim 2, wherein the controller further comprises a speed controller configured to output the system acceleration, and wherein the input coupling unit is operatively arranged downstream of the speed controller.

6. The driver assistance system according to claim 1, wherein the input coupling unit is a summing unit.

7. The driver assistance system according to claim 3, wherein the input coupling unit is a summing unit.

8. A method for controlling an acceleration of a motor vehicle, the method comprising the acts of:

predefining by driver operation of an operating element of the vehicle a driver-generated increment of additional acceleration prior to an acceleration event;

generating a setpoint acceleration by way of the controller of a driver assistance system of the motor vehicle; and

during the acceleration event coupling into the driver assistance system a at least a portion of the predefined increment of additional acceleration, the portion of the predefined increment of additional acceleration coupled into the driver assistance system being proportional to an amount of actuation of the operating element by the driver,

wherein the generating of the setpoint acceleration during the acceleration event further comprises the act of superimposing the predefined increment of additional acceleration on a system acceleration generated by the driver assistance system of the motor vehicle.

9. The method according to claim 8, wherein the system acceleration is generated by a speed controller of the driver assistance system.

10. The method according to claim 8, further comprising the act of compensating for a disturbance variable affecting the motor vehicle, said compensation having an effect on the setpoint acceleration.

11. The method according to claim 9, further comprising the act of compensating for a disturbance variable affecting the motor vehicle, said compensation having an effect on the setpoint acceleration.

12. The method according to claim 8, wherein the act of superimposing comprises the act of adding the manual additional acceleration to the system acceleration in order to generate the setpoint acceleration.

13. The method according to claim 11, wherein the act of superimposing comprises the act of adding the manual additional acceleration to the system acceleration in order to generate the setpoint acceleration.