Systems and methods for providing friction in a haptic feedback device
Systems and methods for providing controlled friction in a haptic feedback device are described. One described device comprises a magnetic target, a magnetic core configured to be in communication with the magnetic target to provide a haptic effect, and a partition. The partition may be configured to maintain a magnetic circuit air gap between the magnetic target and the magnetic core, and to provide friction between the magnetic target and the magnetic core. Such a device may include a processor in communication with the magnetic core for providing a haptic effect.
1. A device comprising:
a magnetic target;
a magnetic core configured to be in communication with the magnetic target to provide a haptic effect; and
a partition configured to maintain a magnetic circuit air gap between the magnetic target and the magnetic core and to provide friction between the magnetic target and the magnetic core.
2. The device of claim 1 , wherein the magnetic circuit air gap comprises a substantially constant magnetic circuit air gap.
3. The device of claim 1 , wherein the friction between the magnetic target and the magnetic core comprises a resistance to movement between the magnetic target and the magnetic core.
4. The device of claim 1 , wherein the friction between the magnetic target and the magnetic core comprises at least one of a predetermined coefficient of static friction range and a predetermined coefficient of kinetic friction range.
5. The device of claim 1 , wherein the partition is further configured to exhibit a wear characteristic between the magnetic target and the magnetic core.
6. The device of claim 1 , wherein the partition is interposed between the magnetic target and the magnetic core.
7. The device of claim 1 , wherein the partition is disposed upon at least one of the magnetic target and the magnetic core.
8. The device of claim 1 , wherein the partition comprises a coating.
9. The device of claim 1 , wherein the partition comprises a plurality of layers.
10. The device of claim 1 , wherein the partition comprises a spacer.
11. The device of claim 1 , wherein the partition comprises at least one of a diamagnetic partition and a non-magnetic partition.
12. The device of claim 1 , wherein the partition comprises a transition metal alloy.
13. The device of claim 1 , wherein the partition comprises a non-metallic material.
14. The device of claim 1 , wherein the magnetic core comprises an electromagnet.
15. A method comprising:
providing a magnetic target;
providing a magnetic core configured to be in communication with the magnetic target to provide a haptic effect; and
providing a partition configured to maintain a magnetic circuit air gap between the magnetic target and the magnetic core and to provide friction between the magnetic target and the magnetic core.
16. The method of claim 15 , wherein the magnetic circuit air gap comprises a substantially constant magnetic circuit air gap.
17. The method of claim 15 , further comprising interposing the partition between the magnetic target and the magnetic core.
18. The method of claim 17 , wherein the magnetic circuit air gap comprises a substantially constant magnetic circuit air gap.
19. The method of claim 17 , further comprising identifying a wear characteristic between the magnetic core and the magnetic target.
20. The method of claim 17 , further comprising interposing a partition comprising the partition configuration between the magnetic core and the magnetic target.
21. The method of claim 15 , further comprising disposing the partition upon at least one of the magnetic target and the magnetic core.