Magnetic levitation transport with dipole line track system

Patent metadata

Field	Value
Publication number	US-11760205-B2
Application number	US-202017014777-A
Country	US
Kind code	B2
Filing date	Sep 8, 2020
Priority date	Jan 17, 2018
Publication date	Sep 19, 2023
Grant date	Sep 19, 2023

Abstract

Magnetic levitation transport using a parallel dipole line track system is provided. In one aspect, a magnetic levitation transport system includes: a dipole line track system having: i) multiple segments joined together, each of the multiple segments having at least two diametric magnets, and ii) at least one diamagnetic object levitating above the at least two diametric magnets. A method for operating a magnetic levitation transport system is also provided.

First claim

What is claimed is:

1. A method for operating a magnetic levitation transport system, the method comprising the steps of:
providing a dipole line track system comprising: i) multiple segments of diametric magnets joined together, end-to-end, with each of the multiple segments having at least two of the diametric magnets, and ii) at least one diamagnetic object levitating between the at least two diametric magnets; and
propelling the at least one diamagnetic object along the multiple segments of the dipole line track system using a capacitive drive system that comprises at least one capacitive plate disposed between the at least one diamagnetic object and at least one of the diametric magnets.

2. The method of claim 1 , wherein the dipole line track system further comprises: iii) multiple capacitive plates between the at least one diamagnetic object and the at least two diametric magnets, and wherein the method further comprises the step of:
applying a voltage bias to each of the multiple capacitive plates in sequence to propel the at least one diamagnetic object along the dipole line track system.

3. The method of claim 2 , wherein the dipole line track system further comprises: iv) a voltage source, and v) a switch unit between the multiple capacitive plates and the voltage source, and wherein the applying step further comprises the step of:
using the switch unit to connect each of the multiple capacitive plates to the voltage source in sequence.

4. The method of claim 3 , further comprising the step of:
using the sequence in which the voltage bias is applied to each of the multiple capacitive plates to control a direction of travel of the at least one diamagnetic object along the dipole line track system.

5. The method of claim 3 , further comprising the step of:
using a frequency with which the voltage bias is applied to each of the multiple capacitive plates to control a speed of the at least one diamagnetic object along the dipole line track system.

6. The method of claim 3 , further comprising the step of:
sensing the multiple capacitive plates with a capacitance meter to detect a presence of the at least one diamagnetic object.

7. The method of claim 6 , further comprising the steps of:
sensing the presence of the at least one diamagnetic object with the capacitance meter and a first capacitive plate A along a direction of travel; and
applying the voltage bias to a second capacitive plate B along the direction of travel to pull the at least one diamagnetic object toward the second capacitive plate B.

8. The method of claim 7 , further comprising the step of:
switching the second capacitive plate B to a sensing mode using the switch unit to connect the second capacitive plate B to the capacitance meter.

9. The method of claim 7 , further comprising the step of:
applying the voltage bias to a third capacitive plate C along the direction of travel to pull the at least one diamagnetic object toward the third capacitive plate C.

10. The method of claim 7 , further comprising the step of:
monitoring a rate of change in capacitance detected by the capacitance meter at the first capacitive plate A.

11. The method of claim 1 , wherein the magnetic levitation transport system further comprises at least one vehicle levitating between the at least two diametric magnets, and wherein the at least one vehicle is the at least one diamagnetic object.

12. The method of claim 1 , wherein the dipole line track system further comprises: at least one vehicle supported by the at least one diamagnetic object.

13. The method of claim 1 , wherein each of the multiple segments has the at least two diametric magnets attached to a fixture, wherein the at least two diametric magnets are separated from one another by a gap g M , and wherein the fixture comprises a variable gap fixture having separate mounts affixed to each of the at least two diametric magnets configured to vary the gap g M between the at least two diametric magnets.

14. The method of claim 1 , wherein the at least two diametric magnets are circular cross-section magnets with transverse magnetization.

15. The method of claim 14 , wherein the at least one diamagnetic object levitates above a center of each of the circular cross-section magnets.

16. The method of claim 1 , wherein the at least two diametric magnets in at least one of the multiple segments are arc-shaped along their long axis.

17. The method of claim 1 , wherein the at least two diametric magnets in at least one of the multiple segments are straight along their long axis.

18. A method for operating a magnetic levitation transport system, the method comprising the steps of:
providing a dipole line track system comprising: i) multiple segments joined together, each of the multiple segments having at least two diametric magnets, ii) at least one diamagnetic object levitating between the at least two diametric magnets, and iii) multiple capacitive plates between the at least one diamagnetic object and the at least two diametric magnets with an insulator disposed between the multiple capacitive plates and the at least two diametric magnets; and
applying a voltage bias to each of the multiple capacitive plates in sequence to propel the at least one diamagnetic object along the dipole line track system.

19. The method of claim 18 , wherein the dipole line track system further comprises: iv) a voltage source, and v) a switch unit between the multiple capacitive plates and the voltage source, and wherein the applying step further comprises the step of:
using the switch unit to connect each of the multiple capacitive plates to the voltage source in sequence.

20. The method of claim 18 , further comprising the step of:
sensing the multiple capacitive plates with a capacitance meter to detect a presence of the at least one diamagnetic object.

Assignees

• IBM

Inventors

• Gunawan Oki

Classifications

• B60L13/04 Primary

  Magnetic suspension or levitation for vehicles · CPC title

• B60L15/005

  for control of propulsion for vehicles propelled by linear motors · CPC title

• Y02T10/64

  Electric machine technologies in electromobility · CPC title

• H02K7/09

  with magnetic bearings · CPC title

• H01F7/0247

  Orientating, locating, transporting arrangements · CPC title