Apparatus and Method for Application of Force to a Steering Device

• US 20080312791A1
• Filed: 12/13/2005
• Published: 12/18/2008
• Est. Priority Date: 12/27/2004
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Wuerz-Wessel, Alexander, Schick, Jens, Knee, Werner, Sickert, Stefan
• Application Number:
  US11/792,897
• Publication Number:
  US 20080312791A1
• Time in Patent Office: Days
• US Class Current: 701/41
• CPC Class Codes: B62D 5/0415 the axes being coaxial
• CPC Class Codes: B62D 6/008 Control of feed-back to the steering input member, e.g. simulating road feel in steer-by-wire applications

Abstract

An apparatus for application of force to a steering device, e.g., of a motor vehicle, includes an operative apparatus associated with the steering device and a counterelement disposed on the steering device. The operative apparatus has an induction assemblage producing an electromagnetic force on the counterelement, and the counterelement has at least one electromagnetically influenceable region, so that a force displacing the counterelement with respect to the operative apparatus can be produced for application of force to the steering device.

Claims

1-16. -16. (canceled)

17. An apparatus for application of force to a steering device of a motor vehicle, comprising:

an operative element associated with the steering device; and

a counterelement disposed on the steering device;

wherein the operative element has an induction assemblage producing an electromagnetic force on the counterelement, and wherein the counterelement has at least one electromagnetically influenceable region, whereby a force displacing the counterelement with respect to the operative element is produced for application of force to the steering device.

18. The apparatus as recited in claim 17, wherein the operative element is associated with a steering column of the steering device, and wherein the counterelement is disposed on the steering column.

19. The apparatus as recited in claim 18, wherein electricity is supplied to the induction assemblage from an energy reservoir configured as a capacitor having a capacitance matched to a selected maximally desired effect of the apparatus.

20. The apparatus as recited in claim 19, further comprising:

a charge monitoring device configured to monitor the charge^•

status of the energy reservoir.

21. The apparatus as recited in claim 19, wherein the induction assemblage has multiple induction elements configured as coils.

22. The apparatus as recited in claim 21, wherein the induction elements are disposed along a circular arc substantially concentric with the steering column.

23. A method for application of force to a steering device, comprising:

providing an operative element associated with the steering device, wherein the operative element has an induction assemblage producing an electromagnetic force;

providing a counterelement disposed on the steering device, wherein the counterelement has at least one electromagnetically influenceable region; and

displacing the counterelement by the electromagnetic force generated by the operative element, whereby force is applied to the steering device.

24. The method as recited in claim 23, wherein the displacement of the counterelement is a rotational displacement.

25. The method as recited in claim 24, wherein the rotational displacement is achieved in alternating directions.

26. The method as recited in claim 24, wherein the induction assemblage includes at least one induction element configured as a coil, and wherein the at least one induction element is controlled by one of an open-loop and a closed-loop control implemented by a control unit using a control signal that is variable over time.

27. The method as recited in claim 26, wherein at least one profile of the control signal is stored.

28. The method as recited in claim 26, wherein at least one profile of the control signal is configured in such a way that a sequence of multiple applications of force is achieved based on the control signal, and wherein the sequence of multiple:

applications of force results in a substantially unmodified steering angle of the steering device.

29. The method as recited in claim 26, wherein at least one profile of the control signal is configured in such a way that a sequence of multiple applications of force is achieved based on the control signal, and wherein the sequence of multiple applications of force results in a modified steering angle of the steering device.

30. The method as recited in claim 29, further comprising:

calculating a steering angle to be achieved based on the application of force to the steering device; and

comparing the calculated steering angle with an actually achieved steering angle.

31. The method as recited in claim 29, wherein the operative element is switched into an inactive state if the magnitude of the difference between the calculated steering angle and the actually achieved steering angle exceeds a predetermined threshold value.

32. The method as recited in claim 26, further comprising:

monitoring, by a charge monitoring device, the charge status of an energy reservoir supplying energy to the operative element; and

one of switching off the operative element and draining the energy reservoir upon detection of a malfunction of the energy reservoir.