METHOD FOR OPERATING A STABILIZER ARRANGEMENT

• US 20150094909A1
• Filed: 10/01/2014
• Published: 04/02/2015
• Est. Priority Date: 10/02/2013
• Status: Active Grant

• Current Assignee: Schaeffler Technologies AG & Co.KG (INA-Holding Schaeffler GmbH & Co. KG), Dr Ing hc F Porsche AG (Volkswagen AG)
• Original Assignee: Dr Ing hc F Porsche AG (Volkswagen AG)
• Inventors: ILLG, Igor, MIRWALDT, Thomas
• Granted Patent: US 9,333,830 B2
• Time in Patent Office: Days
• US Class Current: 701/37
• CPC Class Codes: B60G 17/015 the regulating means comprising electric or electronic elements B60G17/002, B60G17/005 take precedence
• 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 17/025 the mechanical spring being a torsion spring B60G17/0277, B60G21/0553 take precedence
• CPC Class Codes: B60G 21/055 Stabiliser bars
• CPC Class Codes: B60G 21/0555 including an actuator inducing vehicle roll
• CPC Class Codes: B60G 2400/00 Indexing codes relating to detected, measured or calculated conditions or factors
• CPC Class Codes: B60G 2400/0516 Angular position of a suspension element
• CPC Class Codes: B60G 2400/10 Acceleration; Deceleration
• CPC Class Codes: B60G 2400/208 of wheel rotation
• CPC Class Codes: B60G 2400/252 vertical
• CPC Class Codes: B60G 2400/32 Torque on propulsion shaft
• CPC Class Codes: B60G 2800/9122 ARS - Anti-Roll System Control

Abstract

A method for operating a stabilizer arrangement which has two stabilizer modules and an actuator, wherein the stabilizer modules are arranged along an axle of a motor vehicle and are acted on by the actuator, wherein at least one kinematic variable of each wheel which is oriented in the vertical direction of the axle is determined, wherein by using a value of the at least one kinematic variable a value for at least one pilot control parameter is determined by a pilot control arrangement, which value is made available to a control cascade which includes an angle control module, a rotational speed control module and a power control module, wherein a value for a power control for operating the actuator is made available by the control cascade from the value for the pilot control parameter, which is dependent on the value of the kinematic variable.

Claims

1. A method for operating at least one stabilizer arrangement which has two stabilizer modules and an actuator, wherein the stabilizer modules are arranged along an axle of a motor vehicle and are acted on by the actuator, wherein the axle is assigned a plurality of wheels, wherein at least one kinematic variable of each wheel which is oriented in the vertical direction of the axle is determined, wherein, by using a value of the at least one kinematic variable, a value for at least one pilot control parameter is determined by a pilot control arrangement, which value is made available to a control cascade which comprises an angle control module, a rotational speed control module and a power control module, wherein a value for a power control for operating the actuator is made available by the control cascade from the value for the at least one pilot control parameter, which is dependent on the value of the at least one kinematic variable.

2. The method as claimed in claim 1, in which a value for a setpoint angle for the actuator is determined by a torque pilot control module of the pilot control arrangement from a value for a setpoint torque and values for a vertical position as the at least one kinematic variable of the wheels of the axle.

3. The method as claimed in claim 1, in which a value for a setpoint rotational speed for the actuator is determined by the angle control module from a value for a setpoint angle for the actuator and a value for an actual angle of the actuator.

4. The method as claimed in claim 1, in which a value for a rotational speed pilot control is determined as the at least one pilot control parameter for the actuator by a rotational speed pilot control module of the pilot control arrangement from values for a vertical speed as the at least one kinematic variable of the wheels, from a value for a vehicle body rolling rate and a value for a setpoint angle of the actuator.

5. The method as claimed in claim 1, in which a value for a setpoint current for the actuator is determined by the rotational speed control module from a value for a setpoint rotational speed of the actuator, a value for a rotational speed pilot control, as the at least one pilot control parameter of the actuator, and a value for an actual rotational speed for the actuator.

6. The method as claimed in claim 1, in which a value for a power pilot control is determined as the at least one pilot control parameter for the actuator by a power pilot control module of the pilot control arrangement from values for vertical acceleration as the at least one kinematic variable of the wheels, from a value for vehicle body rolling acceleration, a value for a setpoint angle for the actuator and a value for a setpoint rotational speed of the actuator.

7. The method as claimed in claim 1, in which a value for the power control for the actuator is determined by the power control module from a value for a setpoint current of the actuator, a value for a power pilot control as the at least one pilot control parameter of the actuator and a value for an actual current of the actuator.

8. The method as claimed in claim 1, in which a power electronics system makes available, from a value for the power control of the actuator, a value for an actual current which is applied to a motor of the actuator, as a result of which a value for an actual torque for the actuator is made available for a transmission of the actuator.

9. The method as claimed in claim 1, in which a value for the power control is made available for each actuator of each stabilizer arrangement, for operating the respective actuator, for a plurality of stabilizer arrangements, wherein in each case a stabilizer arrangement is assigned to one axle of the motor vehicle and wherein values for the power control for operating the actuators are determined comprehensively for the stabilizer arrangement.

10. A system for operating at least one stabilizer arrangement which has two stabilizer modules and one actuator, wherein the stabilizer modules are arranged along an axle of a motor vehicle and are to be acted on by the actuator, wherein the axle is assigned a plurality of wheels, wherein at least one kinematic variable, oriented in the vertical direction of the axle, of each wheel is to be determined, wherein the system comprises a pilot control arrangement and a control cascade, which comprises an angle control module, a rotational speed control module and a power control module, wherein the pilot control arrangement is designed to determine a value for at least one pilot control parameter using a value of the at least one kinematic variable, and to make said value available to the control cascade, and wherein the control cascade is configured to make available from the value for the at least one pilot control parameter, which is dependent on the value of the at least one kinematic variable, a value for a power control for operating the actuator.

11. The system as claimed in claim 10, in which the angle control module, the rotational speed control module and the power control module are connected in series as modules of the control cascade.

12. The system as claimed in claim 10 which has at least one control unit which is configured to control the at least one stabilizer arrangement, wherein the at least one control unit has the control cascade and the pilot control arrangement.

13. The system as claimed in claim 10, in which a power electronics system of the at least one control unit is connected downstream of the power control module, and a motor and a transmission of the actuator are connected downstream of said power electronics system.

14. The system as claimed in claim 13, in which the power electronics system forms, with the power control module, a loop via which values of at least one operating parameter of the power electronics system are to be fed back to the power control module from the power electronics system.

15. The system as claimed in claim 13, in which the motor forms, with the rotational speed control module, a loop via which values of at least one operating parameter of the motor are to be fed back to the rotational speed control module from the motor.

16. The system as claimed in claim 13, in which the motor forms, with the angle control module, a loop via which values of at least one operating parameter of the motor are to be fed back to the angle control module from the motor.

17. The system as claimed in claim 10, in which the pilot control arrangement has as modules a torque pilot control module, a rotational speed pilot control module and a power pilot control module.

18. The system as claimed in claim 17, in which the torque pilot control module is connected upstream of the angle control module.

19. The system as claimed in claim 17, in which the rotational speed pilot control module is connected in parallel with the angle control module and in series between the torque pilot control module and the rotational speed control module.

20. The system as claimed in claim 17, in which the power pilot control module is connected in parallel with the rotational speed control module and in series between the angle control module and the power control module.

21. The system as claimed in claim 10, which is configured for operating the plurality of stabilizer arrangements, wherein each stabilizer arrangement is assigned to an axle of the motor vehicle, wherein each stabilizer arrangement is assigned a stabilizer-arrangement-specific control unit, wherein the system has a superordinate control unit which is configured to control the stabilizer-arrangement-specific control units.