Method for providing a manipulated variable

Patent metadata

Field	Value
Publication number	US-2016288608-A1
Application number	US-201415036294-A
Country	US
Kind code	A1
Filing date	Nov 7, 2014
Priority date	Nov 13, 2013
Publication date	Oct 6, 2016
Grant date	—

Abstract

The invention relates to a method for providing a manipulated variable for an actuator ( 4 ) of an active chassis of a motor vehicle ( 2 ), wherein the manipulated variable in the event that a value for a projected variable, which is dependent upon a height profile of the terrain to be travelled by the motor vehicle ( 2 ), is available, is configured from a combination of a Skyhook variable, which is dependent upon a movement of a structure of the motor vehicle ( 2 ), and the projected variable, and wherein the manipulated variable is configured from a combination of a soft-spring variable, which is dependent upon a wheel-suspension of the motor vehicle ( 2 ), and the Skyhook variable, if no value for the projected variable is available.

First claim

What is claimed is:

1 - 10 . (canceled)

11 . A method for providing a manipulated variable for an actuator of an active chassis of a motor vehicle, comprising:
forming the manipulated variable in one of two ways, a first way in which the manipulated variable is formed from a combination of a skyhook variable, which is dependent on a movement of a body of the motor vehicle, and an anticipated variable, which is dependent on a height profile of a ground to be traveled by the motor vehicle, when a value for the anticipated variable is available, a second way in which the manipulated variable is formed from a combination of a soft-spring variable, which is dependent on a wheel jounce of the motor vehicle, and the skyhook variable, when no value is available for the anticipated variable.

12 . The method of claim 11 , further comprising using at least one sensor for detecting an environment of the motor vehicle to determine the height profile of the ground to be traveled, and deriving the anticipated variable from the height profile.

13 . The method of claim 11 , further comprising using at least one sensor for detecting a kinematic variable of at least one component of the motor vehicle to derive a movement of the at least one component.

14 . The method of claim 13 , wherein the at least one sensor for detecting a kinematic variable is used to derive a movement of the body as the at least one component of the motor vehicle, and further comprising deriving the skyhook variable from the movement of the body.

15 . The method of claim 13 , wherein the at least one sensor for detecting a kinematic variable is used to derive a movement of a suspension, associated to a wheel of the motor vehicle, as the at least one component of the motor vehicle, and further comprising deriving the soft-spring variable from a wheel jounce of the wheel.

16 . The method of claim 11 , wherein in the presence of the value for the anticipated variable, using a constant value for the soft-spring variable, with the manipulated variable being formed from a combination of the constant soft-spring variable, the skyhook variable, and the anticipated variable.

17 . A system for providing a manipulated variable for an actuator of an active chassis of a motor vehicle, said system comprising:
a first module for implementation of an anticipated function, said first module being configured to provide an anticipated variable, which is dependent on a height profile of a ground to be traveled by the motor vehicle; a second module for implementation of a skyhook function, said second module being configured to provide a skyhook variable, which is dependent on a movement of a body of the motor vehicle; a third module for implementation of a soft-spring function, said third module being configured to provide a soft-spring variable, which is dependent on a wheel jounce of the motor vehicle; and a control unit configured to determine the manipulated variable, said control unit being configured to form the manipulated variable in one of two ways, a first way in which the manipulated variable is formed from a combination of the skyhook variable and the anticipated variable, when a value for the anticipated variable is available, a second way in which the manipulated variable is formed form the manipulated variable from a combination of the soft-spring variable and the skyhook variable, when no value is available for the anticipated variable.

18 . The system of claim 17 , further comprising at least one sensor for detecting an environment of the motor vehicle, said at least one sensor being configured to determine the height profile of the ground to be traveled and to transmit the determined height profile to the first module, said first module being configured to derive the anticipated variable from the height profile.

19 . The system of claim 17 , further comprising at least one sensor configured to detect a value for at least one kinematic variable of a component of the motor vehicle and to transmit the value to the second and third modules, said second module being configured to derive the skyhook variable from the value for the at least one kinematic variable, said third module being configured to derive the soft-spring variable from the value of the at least one kinematic variable.

20 . The system of claim 17 , wherein the first module is configured to deactivate the third module, when the value for the anticipated variable is available.

Assignees

• Audi Ag

Inventors

• Göhrle Christoph
• Schindler Andreas
• Unger Andreas
• Sawodny Oliver

Classifications

• B60G2401/21

  Laser · CPC title

• B60G2400/821

  Uneven, rough road sensing affecting vehicle body vibration · CPC title

• B60G2401/176

  Radio or audio sensitive means, e.g. Ultrasonic · CPC title

• B60G2500/10

  Damping action or damper · CPC title

• B60G17/018

  characterised by the use of a specific signal treatment or control method · CPC title