Virtual ellipse motor

Patent metadata

Field	Value
Publication number	US-9281736-B2
Application number	US-201313849501-A
Country	US
Kind code	B2
Filing date	Mar 23, 2013
Priority date	Mar 23, 2013
Publication date	Mar 8, 2016
Grant date	Mar 8, 2016

Abstract

A virtual ellipse electric motor and methods are presented. A fulcrum bears a nutating dynamic load, and a wobble plate is rotationally coupled to the fulcrum and nutates around the fulcrum. The wobble plate includes an inner pericyclic gear and an outer pericyclic gear, and a stationary gear meshes with the outer pericyclic gear and provides leverage to the wobble plate. The rotational output plate meshes with the inner pericyclic gear and rotates in response to rotation of the wobble plate. The stator includes an electromagnet and electromagnetically attracts a first side of the wobble plate such that a second side of the wobble plate is leveraged against the stationary gear and the rotational output plate.

First claim

The invention claimed is:

1. A virtual ellipse electric motor comprising:
a fulcrum operable to bear a rotating radial dynamic load;
a wobble plate rotationally coupled to the fulcrum and operable to nutate around the fulcrum, and comprising an inner pericyclic gear and an outer pericyclic gear;
a stationary gear operable to mesh with the outer pericyclic gear and provide leverage to the wobble plate;
a rotational output plate operable to mesh with the inner pericyclic gear and rotate in response to nutation of the wobble plate; and
a stator comprising at least one electromagnet and operable to electromagnetically attract a first side of the wobble plate such that a second side of the wobble plate is leveraged against the stationary gear and the rotational output plate.

2. The virtual ellipse electric motor of claim 1 , further comprising a stator housing operable to house the stator.

3. The virtual ellipse electric motor of claim 1 , further comprising a bushing operable to provide bearing for the rotational output plate.

4. The virtual ellipse electric motor of claim 3 , further comprising bushing retainer ring coupled to the bushing and operable to retain the bushing.

5. The virtual ellipse electric motor of claim 1 , further comprising an upper housing coupled to a rocker arm.

6. The virtual ellipse electric motor of claim 1 , wherein:
a first number of gear teeth of the stationary gear is equal to a second number of gear teeth of the outer pericyclic gear; and
a third number of gear teeth of the rotational output plate is equal to a fourth number of gear teeth of the inner pericyclic gear.

7. A method for operating a virtual ellipse electric motor, the method comprising:
nutating a wobble plate rotationally coupled to a fulcrum around the fulcrum, the wobble plate comprising an inner pericyclic gear and an outer pericyclic gear;
electromagnetically attracting a first side of the wobble plate to a stator comprising at least one electromagnet;
leveraging the wobble plate with the fulcrum to press a second side of the wobble plate against a stationary gear and a rotational output plate;
meshing the stationary gear with the outer pericyclic gear;
leveraging the outer pericyclic gear to the stationary gear;
driving the rotational output plate with the inner pericyclic gear; and
rotating the rotational output plate in response to nutation of the wobble plate.

8. The method of claim 7 , further comprising providing actuation via a first output arm coupled to the rotational output plate.

9. The method of claim 7 , further comprising providing actuation via a second output arm coupled to the stator.

10. The method of claim 7 , further comprising providing dual actuation via the stator and the rotational output plate.

11. The method of claim 7 , wherein:
a first number of gear teeth of the stationary gear is equal to a second number of gear teeth of the outer pericyclic gear; and
a third number of gear teeth of the rotational output plate is equal to a fourth number of gear teeth of the inner pericyclic gear.

12. A method for configuring a virtual ellipse electric motor, the method comprising:
configuring a fulcrum to bear a rotating radial dynamic load;
rotationally coupling a wobble plate comprising an inner pericyclic gear and an outer pericyclic gear to the fulcrum;
configuring the wobble plate to nutate around the fulcrum;
meshing a stationary gear with the outer pericyclic gear;
configuring the stationary gear to provide leverage to the wobble plate;
meshing a rotational output plate with the inner pericyclic gear;
configuring the rotational output plate to rotate in response to nutation of the wobble plate; and
configuring a stator comprising at least one electromagnet to electromagnetically attract a first side of the wobble plate such that a second side of the wobble plate is leveraged against the stationary gear and the rotational output plate.

13. The method of claim 12 , further comprising configuring a stator housing operable to house the stator.

14. The method of claim 12 , further comprising configuring a bushing operable to provide a bearing for the rotational output plate.

15. The method of claim 12 , further comprising configuring a bushing retainer ring coupled to the bushing and operable to retain the bushing.

16. The method of claim 12 , further comprising configuring an upper housing coupled to a rocker arm.

17. The method of claim 12 , further comprising configuring a ratio of wobble plate nutations to rotations of the rotational output plate.

18. The method of claim 17 , further comprising configuring the ratio of wobble plate nutations to rotations of the rotational output plate for actuation.

19. The method of claim 18 , further comprising configuring the ratio wherein one rotation of the rotational output plate results from about 180 to about 200 nutations of the wobbling plate.

20. The method of claim 12 , wherein:
a first number of gear teeth of the stationary gear is equal to a second number of gear teeth of the outer pericyclic gear; and
a third number of gear teeth of the rotational output plate is equal to a fourth number of gear teeth of the inner pericyclic gear.

Assignees

• Boeing Co

Inventors

• Atmur Robert J
• Sargent William P

Classifications

• H02K41/065 Primary

  Nutating motors · CPC title

• F16C35/02

  in the case of sliding-contact bearings · CPC title

• F16C17/04

  for axial load only · CPC title

• H02K2205/03

  Machines characterised by thrust bearings · CPC title