METHOD FOR ADJUSTING THE SPATIAL POSITION OF THE ROLL AXIS OF A MOTOR VEHICLE

• US 20130218414A1
• Filed: 09/22/2011
• Published: 08/22/2013
• Est. Priority Date: 09/23/2010
• Status: Active Grant

• Current Assignee: Audi AG (Volkswagen AG)
• Original Assignee: Audi AG (Volkswagen AG)
• Inventors: Meitinger, Karl-Heinz, Br, Michael
• Granted Patent: US 9,387,852 B2
• Time in Patent Office: Days
• US Class Current: 701/38
• CPC Class Codes: B60G 17/0162 mainly during a motion involving steering operation, e.g. cornering, overtaking B60G17/0164 takes precedence
• CPC Class Codes: B60G 17/0195 characterised by the regulation being combined with other vehicle control systems conjoint control of vehicle sub-units including control of suspension systems B60W10/22
• CPC Class Codes: B60G 2400/104 lateral or transversal with regard to vehicle
• CPC Class Codes: B60G 2400/62 Seat occupation; Passenger presence
• CPC Class Codes: B60G 2500/40 Steering
• CPC Class Codes: B60G 2600/182 Active control means
• CPC Class Codes: B60G 2800/012 Rolling condition
• CPC Class Codes: B60G 2800/24 Steering, cornering
• CPC Class Codes: B60G 2800/9123 Active Body Control [ABC]
• CPC Class Codes: B60G 2800/965 Automatic or driver-independent manoeuvre, e.g. for obstacle avoidance or roll-over prevention
• CPC Class Codes: B60G 2800/98 Intelligent Transportation System or Bus [IDB]
• CPC Class Codes: B60W 10/20 including control of steering systems
• CPC Class Codes: B60W 10/22 including control of suspension systems
• CPC Class Codes: B60W 30/025 related to comfort of drivers or passengers
• CPC Class Codes: B60W 30/18145 Cornering
• CPC Class Codes: B60W 40/112 Roll movement

Abstract

A method for adjusting the spatial position of the roll axis of a motor vehicle includes: a) defining a desired spatial position of the roll axis; b) determining a transverse acceleration of the motor vehicle; c) defining a desired transverse tilt of the motor vehicle and determining a desired transverse offset of the motor vehicle as a function of the transverse acceleration, so that the roll axis is moved into the desired position when the desired transverse tilt and the desired transverse offset are adjusted; d) adjusting a first actuator of an active chassis system of the motor vehicle, so that the motor vehicle assumes the desired transverse tilt determined in step c); and adjusting a second actuator to influence the transverse movement of the motor vehicle, so that the motor vehicle assumes the desired transverse offset determined in step c).

Claims

1-10. -10. (canceled)

11. A method for adjusting the spatial position of a roll axis of a motor vehicle, comprising:

a) defining a desired spatial position of the roll axis;

b) determining a transverse acceleration of the motor vehicle;

c) defining a desired transverse tilt of the motor vehicle and determining a desired transverse offset of the motor vehicle as a function of the transverse acceleration, so that the roll axis is displaced into the desired spatial position commensurate with the desired transverse tilt and the desired transverse offset;

d) adjusting at least one first actuator of an active suspension system of the motor vehicle, so that the motor vehicle assumes the desired transverse tilt, and adjusting at least one second actuator which influences the transverse movement of the motor vehicle, so that the motor vehicle assumes the desired transverse offset.

12. The method of claim 11, wherein the transverse movement of the motor vehicle is adjusted with the at least one second actuator by intervening in a steering system of the motor vehicle.

13. The method of claim 11, wherein the defined desired spatial position of the roll axis falls at least partially into a region that is occupied by a vehicle operator driving the motor vehicle.

14. The method of claim 11, wherein the desired spatial position of the roll axis is at least partially located farther away from a road surface than a position of the roll axis in a rest state of the motor vehicle.

15. The method of claim 11, further comprising determining with a device for automatic route preview a future transverse acceleration of the motor vehicle occurring at a future time, and determining the desired transverse tilt and the desired transverse offset of the motor vehicle commensurate with the determined future transverse acceleration occurring at the future time.

16. The method of claim 15, wherein the device for automatic route preview determines the future transverse acceleration based on at least one criterion selected from a speed of the motor vehicle, data relating to a course of the road surface, data relating to an inclination of the road surface, and a function for forward-looking longitudinal and transverse guidance.

17. The method of claim 11, further comprising determining the transverse acceleration based on a signal from at least one sensor.

18. The method of claim 11, wherein the at least one first actuator influencing the transverse tilt of the motor vehicle is provided in an active suspension system or in an active stabilizer.

19. The method of claim 11, wherein the method is performed in conjunction with automated vehicle guidance.

20. The method of claim 11, wherein the method is performed in conjunction with fully automated vehicle guidance.

21. The method of claim 11, wherein the desired spatial position of the roll axis is defined depending on a number of occupants or depending on a spatial position of at least one occupant in the motor vehicle.