Coordination of a vehicle dynamics control system with other vehicles stability systems

• US 20050228565A1
• Filed: 04/08/2005
• Published: 10/13/2005
• Est. Priority Date: 04/08/2004
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Verhagen, Armin, Sackmann, Martin, Traechtler, Ansgar, Martini, Dietmar, Gerdes, Manfred, Lohner, Herbert, Futterer, Sylvia, Frese, Karlheinz
• Granted Patent: US 7,305,292 B2
• Time in Patent Office: Days
• US Class Current: 701/41
• CPC Class Codes: B60T 2260/08 Coordination of integrated systems
• CPC Class Codes: B60T 8/1755 Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve road vehicle drive control systems for control of driving stability otherwise than by controlling a particular sub-unit B60W30/02
• 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: B62D 6/003 in order to control vehicle yaw movement, i.e. around a vertical axis B62D6/007 takes precedence

Abstract

Described is a device for stabilizing a vehicle in critical driving situations, including a vehicle dynamics control system having a control unit, including a vehicle dynamics control algorithm, and at least one actuator and an additional vehicle stability system having an associated actuator. Vehicle dynamics control may be executed in a particularly simple and trouble-free manner when the vehicle dynamics control algorithm is retrofitted with a distribution function which derives an actuating request for an actuator of the vehicle dynamics control system as well as an actuating request for at least one actuator of the vehicle stability system from a controller output variable.

Claims

1. A device for stabilizing a vehicle in a critical driving situation, comprising:

a vehicle dynamics control system including a control unit, in which a vehicle dynamics control algorithm is stored, and at least one first actuator; and

a vehicle stability system having at least one second actuator, wherein;

the vehicle dynamics control algorithm generates a controller output variable from which a first actuating request for the at least one first actuator and a second actuating request for the at least one second actuator is derived.

2. The device as recited in claim 1, wherein the vehicle dynamics control algorithm includes a distribution unit that generates the first actuating request and the second actuating request from the controller output variable.

3. The device as recited in claim 1, wherein the vehicle stability system includes one of:

an active steering system,

an active chassis system, and

a system for actively intervening in a driving operation for vehicle stabilization purposes.

4. The device as recited in claim 1, wherein the controller output variable includes one of a yaw moment and a variable proportional to the yaw moment.

5. The device as recited in claim 2, wherein the distribution unit is implemented in such a way that:

the first actuating request is derived from the controller output variable,

a residual value of the controller output variable is determined from the controller output variable and the first actuating request, and

the second actuating request is determined from the residual value.

6. The device as recited in claim 5, wherein:

the at least one first actuator includes a spring-and-shock-absorber unit of an active chassis, and

the at least one second actuator includes a steering actuator of an active steering system.

7. The device as recited in claim 1, wherein:

the control unit of the vehicle dynamics control system and a control unit of the vehicle stability system are connected to two buses, and

the first actuating request is transmitted from the control unit of the vehicle dynamics control system to the control unit of the vehicle stability system via the bus to which sensors of the vehicle dynamics control system are connected.

8. A method for stabilizing a vehicle in a critical driving situation, the vehicle including a vehicle dynamics control system that includes a first control unit and a first actuator, the vehicle including a vehicle stability system that includes a second control unit and a second actuator, comprising:

performing a yaw rate regulation;

generating a controller output variable; and

deriving a first actuating request for the first actuator and a second actuating request for the second actuator from the controller output variable.

9. The method as recited in claim 8, wherein:

the vehicle stability system includes an active steering system, and

a steering wheel angle and an actual steering angle at a wheel of the vehicle are supplied to the first control unit.