Method and Device for Controlling an Electronic Brake of a Vehicle

• US 20080255745A1
• Filed: 08/21/2006
• Published: 10/16/2008
• Est. Priority Date: 08/29/2005
• Status: Abandoned Application

• Current Assignee: VDO Automotive AG (Continental AG)
• Original Assignee: VDO Automotive AG (Continental AG)
• Inventors: Sader, Frank, Bay, Wolfgang, Fernengel, Mathias
• Application Number:
  US12/063,829
• Publication Number:
  US 20080255745A1
• Time in Patent Office: Days
• US Class Current: 701/79
• CPC Class Codes: B60T 13/741 acting on an ultimate actuator
• CPC Class Codes: B60T 2270/83 Control features of electronic wedge brake [EWB]

Abstract

In a method for controlling an electromechanical brake of a vehicle, the electromechanical brake having a braking element (12), an electric actuator (14) and a pressing element (18), the pressing element is arranged and is coupled to the electric actuator (14) so that it can be pressed against the braking element (12) by the electric actuator (14). An actual value of a linear acceleration (A_ACT) of the vehicle is determined and the actuator (14) is triggered as a function of the actual value of the linear acceleration (A_ACT) of the vehicle.

Claims

1. A method for controlling an electronic, or electromechanical brake of a vehicle, the braking comprising

a braking element,

an electric actuator, and

a pressing element, which is arranged in such a way and is coupled to the electric actuator in such a way that it can be pressed against the braking element by means of the electric actuator, the method comprising the steps of:

determining an actual value of a linear acceleration of the vehicle, and

triggering the actuator as a function of the actual value of the linear acceleration of the vehicle.

2. The method for controlling an electronic brake of a vehicle according to claim 1, wherein

a setpoint value of the linear acceleration of the vehicle is predetermined, and

the actuator is triggered in such a way that the actual value adapts itself to the setpoint value of the linear acceleration of the vehicle.

3. The method for controlling an electronic brake of a vehicle according to claim 2, wherein an actual value of a rate of yaw of the vehicle is determined, and the setpoint value of the linear acceleration of the vehicle is determined as a function of the actual value of the rate of yaw of the vehicle.

4. The method for controlling an electronic brake of a vehicle according to claim 1, wherein

an actual value of the rotational acceleration of a driving mechanism of the vehicle is determined,

an actual value of the rate of yaw of the vehicle is determined,

from the actual value of the linear acceleration and from the actual value of the rate of yaw of the vehicle, an estimated value of the rotational acceleration of the driving mechanism of the vehicle is determined,

as a function of the actual value of the rotational acceleration and the estimated value of the rotational acceleration of the driving mechanism of the vehicle, an estimated value of the braking torque of the driving mechanism of the vehicle is determined,

a setpoint value of the braking torque of the driving mechanism of the vehicle is predetermined, and

the actuator is triggered in such a way that the estimated value adapts itself to the setpoint value of the braking torque of the driving mechanism of the vehicle.

5. The method for controlling an electronic brake of a vehicle according to claim 4, wherein

a difference value between the vehicle speed and the rolling speed of the driving mechanism of the vehicle is determined as a function of the actual value of the rotational acceleration and the estimated value of the rotational acceleration of the driving mechanism of the vehicle, and

the estimated value of the braking torque of the driving mechanism of the vehicle is determined from the difference value between the vehicle speed and the rolling speed of the driving mechanism of the vehicle.

6. The method for controlling an electronic brake of a vehicle according to claim 1, wherein the actual value of the linear acceleration of the vehicle is determined by means of a driving stability system of the vehicle.

7. The method for controlling an electronic brake of a vehicle according to claim 1, wherein the actual value of the linear acceleration of the vehicle is determined by means of an anti-lock brake system of the vehicle.

8. The method for controlling an electronic brake of a vehicle according to claim 4, wherein the actual value of the rotational acceleration of the driving mechanism of the vehicle is determined by means of an anti-lock brake system of the vehicle.

15. The method according to claim 3, wherein the actual value of the rate of yaw of the vehicle is determined by means of a driving stability system of the vehicle.

9. The device for controlling an electronic or electromechanical, brake of a vehicle, wherein the brake comprises

a braking element,

an electric actuator, and

a pressing element, which is arranged in such a way and is coupled to the electric actuator in such a way that it can be pressed against the braking element by means of the electric actuator, with the device being operable

to determine an actual value of a linear acceleration of the vehicle, and

to trigger the actuator as a function of the actual value of the linear acceleration of the vehicle.

17. The device according to claim 9 wherein, the electronic brake is an electromechanical brake, which is configured in the form of a wedge brake and the pressing element has a wedge element.

10. The method for controlling an electronic, or electromechanical, brake of a vehicle, wherein the brake comprises

a braking element,

an electric actuator, and

a pressing element, which is arranged in such a way and is coupled to the electric actuators in such a way that it can be pressed against the braking element by means of the electric actuator the method comprising the steps of

determining an actual value of a rotational acceleration of a driving mechanism of the vehicle, and

triggering the actuator as a function of the actual value of the rotational acceleration of the driving mechanism of the vehicle.

11. The method according to claim 10,

a setpoint value of the rotational acceleration of the driving mechanism of the vehicle is predetermined, and

the actuator is triggered in such a way that the actual value adapts itself to the setpoint value of the rotational acceleration of the driving mechanism of the vehicle.

12. The method according to claim 11, wherein an actual value of a rate of yaw of the vehicle is determined and the setpoint value of the rotational acceleration of the driving mechanism of the vehicle is determined as a function of the actual value of the rate of yaw of the vehicle.

13. The method according to claim 10, wherein actual value of the rotational acceleration of the driving mechanism of the vehicle is determined by means of a driving stability system of the vehicle.

14. The method according to claim 10, wherein actual value of the rotational acceleration of the driving mechanism of the vehicle is determined by means of an anti-lock brake system of the vehicle.

16. A device for controlling an electronic brake of a vehicle, with the electronic brake comprising

a braking element,

an electric actuator and

a pressing element, which is arranged in such a way and is coupled to the electric actuator in such a way that it can be pressed against the braking element by means of the electric actuator, with the device being operable

to determine an actual value of a rotational acceleration of the driving mechanism of the vehicle, and

to trigger the actuator as a function of the actual value of the rotational acceleration of the driving mechanism of the vehicle.

18. The device according to claim 16, wherein the electronic brake is an electromechanical brake, which is configured in the form of a wedge brake and the pressing element has a wedge element.