Magnetic bearing and suspension system

• US 4,961,352 A
• Filed: 02/24/1988
• Issued: 10/09/1990
• Est. Priority Date: 02/24/1988
• Status: Expired due to Term

• Current Assignee: Satcon Technology Corporation
• Original Assignee: Satcon Technology Corporation
• Inventors: Hockney, Richard L., Johnson, Bruce G., Eisenhaure, David B., Downer, James R.
• Primary Examiner(s): Bonck, Rodney H.
• Application Number:
  US07/159,844
• Time in Patent Office: 958 Days
• Field of Search: 74/5.7, 74/5.46, 74/5.6 E, 310/90.5, 505/870, 505/879
• US Class Current: 74/5.46
• CPC Class Codes: B64G 1/286 using control momentum gyroscopes (CMGs)
• CPC Class Codes: F16C 2326/47 Cosmonautic vehicles, i.e. bearings adapted for use in outer-space
• CPC Class Codes: F16C 2370/00 Apparatus relating to physics, e.g. instruments
• CPC Class Codes: F16C 32/0438 with a superconducting body, e.g. a body made of high temperature superconducting material such as YBaCuO
• CPC Class Codes: F16C 32/0444 Details of devices to control the actuation of the electromagnets
• CPC Class Codes: G01C 19/24 using magnetic or electrostatic fields
• CPC Class Codes: Y10T 74/125 by magnetic field
• CPC Class Codes: Y10T 74/1282 with rotor drive
• CPC Class Codes: Y10T 74/1296 Flywheel structure

Abstract

A magnetic rotor suspension system including a magnetic rotor having a spin axis, and a generally spherical housing spaced from the rotor. The system includes means attached to the housing for applying magnetic fields to the rotor to fix its lateral and axial position relative to the housing and to adjust the angular orientation of the spin axis of the rotor relative to the housing.

Claims

1. A magnetic gyroscope system comprising:

a rotor including a magnetic member having a spin axis and a flywheel fixed to said member having a spherical contour, said magnetic member including a superconducting

an armature for inducing rotation of said rotor to store angular momentum;

a generally spherical housing spaced from said rotor;

means attached to said housing for applying a magnetic field to said rotor to fix its lateral position relative to said housing;

means attached to said housing for applying a magnetic field to said rotor to fix its axial position relative to said housing;

means attached to said housing for applying a magnetic field to said rotor to adjust the angular orientation of the spin axis of the rotor relative to said housing for transferring momentum between the housing and rotor to control the relative positions of the housing and the rotor.

2. The magnetic gyroscope system of claim 1 in which said means for applying a magnetic field to said rotor to fix its lateral position includes at least on control coil for conducting current flow to create the magnetic field.

3. The magnetic gyroscope system of claim 2 in which said means for applying a magnetic field to said rotor to fix its lateral position includes a first pair of control coils and means for selectively exciting the coils for maintaining the lateral position of said rotor in a first radial direction.

4. The magnetic gyroscope system of claim 3 in which said means for applying a magnetic field to said rotor to fix its lateral position further includes a second pair of control coils and means for selectively exciting the coils for maintaining the lateral position of said rotor in a second radial direction perpendicular to said first radial direction.

5. The magnetic gyroscope system of claim 1 in which said means for applying magnetic field to said rotor to fix its axial position includes at least one control coil for conducting current flow to create the magnetic field.

6. The magnetic gyroscope system of claim 5 in which said means for applying a magnetic field to said rotor to fix its axial position includes at least one pair of control coils and means for selectively exciting the coils for maintaining the axial position of the rotor.

7. The magnetic gyroscope system of claim 1 in which said means for applying a magnetic field to said rotor to adjust the angular orientation of the spin axis of the rotor includes at least one control coil for conducting current flow to create the magnetic field.

8. The magnetic gyroscope system of claim 5 in which said means for applying a magnetic field to said rotor to adjust the angular orientation of the spin axis of the rotor further includes means for determining the relative positions of the spin axis of the rotor and the housing.

9. The magnetic gyroscope system of claim 8 in which said means for applying a magnetic field to said rotor to adjust the angular orientation of its spin axis further includes means, responsive to said means for determining, for selectively exciting said control coils to alter the relative position of the spin axis and the housing.

10. The magnetic gyroscope system of claim 1 further including means for monitoring the lateral and axial position of the rotor relative to the housing.

11. The magnetic gyroscope system of claim 10 in which said means for applying a magnetic field to said rotor to fix its axial position and fix its lateral position are responsive to said means for monitoring for maintaining the lateral and axial position of the rotor relative to the housing.

12. The magnetic gyroscope system of claim 1 in which said armature is fixed to said housing.

13. The magnetic gyroscope system of claim 1 in which said armature is outside of said housing.

14. The magnetic gyroscope system of claim 1 in which said housing surrounds said rotor.

15. A magnetic rotor suspension system comprising:

a magnetic rotor having a spin axis, said rotor including an annular electromagnetic coil and being adapted for connection to a rotating member;

a generally spherical housing spaced from said rotor;

means attached to said housing for applying a magnetic field to said rotor to fix its lateral position relative to said housing;

means attached to said housing for applying a magnetic field to said rotor to fix its axial position relative to said housing; and

means attached to said housing for applying a magnetic field to said rotor to adjust the angular orientation of the spin axis of the rotor relative to said housing.

16. The magnetic rotor suspension system of claim 15 in which said rotor includes a superconducting solenoid.

17. A magnetic bearing system comprising:

a magnetic rotor having a spin axis, said rotor including an annular electromagnetic coil and being adapted for connection to a rotation member;

a generally spherical housing spaced from said rotor;

means attached to said housing for applying a magnetic field to said rotor to fix its lateral position relative to said housing;

means attached to said housing for applying a magnetic field to said rotor to fix its axial position relative to said housing; and

means attached to said housing for applying a magnetic field to said rotor to fix the angular orientation of the spin axis of the rotor relative to said housing.

18. The magnetic bearing system of claim 17 in which said rotor includes a superconducting solenoid.

19. A superconducting magnetic rotor suspension system comprising:

a rotor including a superconducting magnetic solenoid having a spin axis, said rotor being adapted for connecting to a rotating member;

a housing spaced from said rotor;

means attached to said housing for applying a magnetic field to said rotor to fix its lateral position relative to said housing;

means attached to said housing for applying a magnetic field to said rotor to fix its axial position relative to said housing; and

means attached to said housing for applying a magnetic field to said rotor to adjust the angular orientation of the spin axis of the rotor relative to said housing.

20. A superconducting magnetic bearing system comprising:

a rotor including a superconducting magnetic solenoid having a spin axis, said rotor being adapted for connection to a rotating member;

a housing spaced from said rotor;

means attached to said housing for applying a magnetic field to said rotor to fix its lateral position relative to said housing;

means attached to said housing for applying a magnetic field to said rotor to fix its axial position relative to said housing; and

means attached to said housing for applying a magnetic field to said rotor to fix the angular orientation of the spin axis of the rotor relative to said housing.

21. A superconducting magnetic gyroscope system comprising:

a rotor including a superconducting magnetic solenoid having a spin axis and a flywheel fixed to said solenoid;

means for maintaining said solenoid at no greater than its superconducting critical temperature;

a housing surrounding and spaced from said rotor;

an armature fixed to said housing for inducing rotation of said rotor to store angular momentum;

a plurality of pairs of coils attached to said housing for conducting current flow to apply magnetic field to said rotor to fix its lateral and axial position relative to said housing and adjust the angular orientation of the spin axis of the rotor relative to said housing;

means for monitoring the lateral and axial position of the rotor relative to the housing and the relative positions of the spin axis of the rotor and the housing; and

means, responsive to said means for monitoring, for selectively exciting said pairs of coils to maintain the lateral and axial position of the rotor relative to the housing and adjust the angular orientation of the spin axis of the rotor relative to the housing for transferring momentum between the housing and rotor to control the relative positions of the housing and the rotor.

22. A magnetic gyroscope system comprising:

a rotor including a magnetic member having a spin axis and a flywheel having a spherical contour fixed to said member;

a generally spherical housing spaced from said rotor;

an armature outside said housing for inducing rotation of said rotor to store angular momentum;

means attached to said housing for applying a magnetic field to said rotor to fix its lateral position relative to said housing;

means attached to said housing for applying a magnetic field to said rotor to fix its axial position relative to said housing; and

means attached to said housing for applying a magnetic field to said rotor to adjust the angular orientation of the spin axis of the rotor relative to said housing for transferring momentum between the housing and rotor to control the relative positions of the housing and the rotor.

23. A magnetic gyroscope system comprising:

a rotor including a magnetic member, said magnetic member including an annular electromagnetic coil having a spin axis, and a flywheel having a spherical contour fixed to said member;

an armature for inducing rotation of said rotor to store angular momentum;

a generally spherical housing spaced from said rotor;

means attached to said housing for applying a magnetic field to said rotor to fix its lateral position relative to said housing;

means attached to said housing for applying a magnetic field to said rotor to fix its axial position relative to said housing; and

means attached to said housing for applying a magnetic field to said rotor to adjust the angular orientation of the spin axis of the rotor relative to said housing for transferring momentum between the housing and rotor to control the relative positions of the housing and the rotor.

24. The magnetic gyroscope system of claim 23 wherein said annular electromagnetic coil is a superconducting solenoid.

25. The magnetic gyroscope system of claim 24 further including means for maintaining said solenoid at no greater than its superconducting critical temperature.