Control moment gyroscope

Patent metadata

Field	Value
Publication number	US-10139226-B2
Application number	US-201314777682-A
Country	US
Kind code	B2
Filing date	Oct 25, 2013
Priority date	Mar 25, 2013
Publication date	Nov 27, 2018
Grant date	Nov 27, 2018

Abstract

The objective of the present invention is to provide a control moment gyroscope which can be provided in a limited space since the volume thereof can be reduced without change in performance by optimizing the shapes and mounting positions of each component. To this end, the control moment gyroscope of the present invention is a control moment gyroscope for generating torque in the orthogonal directions to both of two shafts which are perpendicularly disposed to each other by rotating the two shafts, and the control moment gyroscope comprises: a gimbal motor formed in a hollow cylinder shape and supplying momentum; spin motor provided inside the gimbal motor and supplying momentum in a perpendicular direction to the momentum of the gimbal motor; and a flywheel provided in the inside of the gimbal motor and supplied with the rotational force of the gimbal motor and the rotational force of the spin motor.

First claim

What is claimed is:

1. A control moment gyroscope for rotating two shafts disposed perpendicular to each other and generating torque in a direction orthogonal to both of the shafts, comprising:
a gimbal motor having a hollow cylindrical shape and supplying momentum;
a spin motor provided in an inside of the gimbal motor and supplying momentum in a direction perpendicular to the momentum of the gimbal motor; and
a flywheel provided in the inside of the gimbal motor and supplied with a rotating force of the gimbal motor and a rotating force of the spin motor,
wherein the gimbal motor comprises:
a first stator having a hollow cylindrical shape with a coil wound thereon;
a first rotor in a hollow cylindrical shape, being provided at a gap with respect to the first stator, and having a permanent magnet;
a first stator support in a hollow cylindrical shape and supporting the first stator; and
a first rotor support supporting the first rotor, being rotatably provided on the first stator support, and comprising an insertion inserted into the first stator support, and
wherein the first stator support and the first rotor support form a portion of an outer circumference of the control moment gyroscope.

2. The control moment gyroscope of claim 1 , wherein the first stator support comprises a first guidance passage in an annular shape recessed in a direction of momentum of the gimbal motor,
the first stator is fixed to the first guidance passage, and
the first rotor is rotatably inserted into the first guidance passage.

3. The control moment gyroscope of claim 1 , further comprising:
an upper cover covering an upper opening of the gimbal motor; and
a lower cover covering a lower opening of the gimbal motor.

4. The control moment gyroscope of claim 3 , wherein the insertion of the first rotor support is rotatably supported on the lower cover through a slip ring.

5. The control moment gyroscope of claim 1 , wherein the spin motor comprises:
a second stator in a hollow cylindrical shape with a coil wound thereon, being fixed to the insertion, and protruding in a direction perpendicular to the direction of momentum of the gimbal motor;
a second rotor in a hollow cylindrical shape, being provided at a gap with respect to the second stator and supported on the flywheel, and comprising a permanent magnet; and
a spin shaft rotatably provided in the insertion, forming a center of rotation of the flywheel, and having a direction perpendicular to the direction of momentum of the gimbal motor.

6. The control moment gyroscope of claim 5 , wherein the flywheel comprises a second guidance passage in an annular shape recessed in the direction of momentum of the spin motor, the second stator is inserted into the second guidance passage while allowing the flywheel to rotate, and the second rotor is fixed to the second guidance passage.

7. The control moment gyroscope of claim 6 , wherein the flywheel has a sphere shape.

8. The control moment gyroscope of claim 6 , wherein the flywheel has a circular plate or elliptic plate shape.

9. The control moment gyroscope of claim 8 , wherein the flywheel is positioned in a configuration in which an outer circumference thereof is penetrated by the spin shaft.

10. The control moment gyroscope of claim 8 , wherein the flywheel is positioned in a configuration in which a center of a flat surface thereof is penetrated by the spin shaft.

11. The control moment gyroscope of claim 6 , wherein the flywheel has an elliptic plate shape elongated in a shaft direction of the spin shaft, or has the elliptic plate shape elongated in the direction of momentum of the gimbal motor.

12. The control moment gyroscope of claim 6 , wherein the flywheel has a rugby ball shape which is gradually increased in diameter and then gradually decreased in diameter in a shaft direction of the spin shaft, or has the rugby ball shape which is gradually increased in diameter and then gradually decreased in diameter in the direction of momentum of the gimbal motor.

13. The control moment gyroscope of claim 6 , wherein the flywheel consists of a plurality of circular plates or elliptic plates stacked on one another.

14. The control moment gyroscope of claim 13 , wherein the plurality of circular plates or the elliptic plates, each in stepped form, are stacked on one another along a shaft direction of the spin shaft.

15. The control moment gyroscope of claim 6 , wherein the flywheel has any of a cylindrical shape, a sphere shape and a rugby ball shape in which a plurality of circular plates are stacked on one another in a shaft direction of the spin shaft.

16. The control moment gyroscope of claim 6 , wherein the flywheel has a cylindroid shape or a rugby ball shape in which a plurality of elliptic plates are stacked on one another in a shaft direction of the spin shaft.

Assignees

• Korea Aerospace Res Inst

Inventors

• Lee Seon Ho

Classifications

• G01C19/06

  Rotors · CPC title

• B62D37/06

  using gyroscopes · CPC title

• B60G2401/28

  Gyroscopes · CPC title

• G01C19/08

  electrically driven (G01C19/14 takes precedence) · CPC title

• B64C17/06

  by gyroscopic apparatus · CPC title