Actuating device and method of making the same

Patent metadata

Field	Value
Publication number	US-11201530-B2
Application number	US-201815992002-A
Country	US
Kind code	B2
Filing date	May 29, 2018
Priority date	May 26, 2017
Publication date	Dec 14, 2021
Grant date	Dec 14, 2021

Abstract

Disclosed herein are permanent magnetic AC machine direct-drive resonant flapper system for flapping wing micro air vehicles and flapping fin autonomous underwater vehicles.

First claim

The invention claimed is:

1. An actuating device, comprising:
a first actuating device, a second actuating device, and a servo-type actuator,
wherein the first actuating device comprises:
a stator within a housing, wherein the stator comprises a core portion and a shoe portion, wherein the shoe portion comprises an arc, wherein the shoe portion extends from each terminus of a plurality of termini of the core portion;
a coil extending around the core portion of the stator;
a plurality of magnets coupled within the housing, wherein each magnet of the plurality of magnets are coupled with the stator, wherein the each magnet of the plurality of magnets are coupled on opposite sides of the housing, and wherein the housing is configured to rotate about an axis through the stator, wherein the axis is parallel to a longitudinal extensions of the shoe portion of the stator; and a spring coupled to the housing and the stator, wherein the spring is configured to revert the housing back to an original state after being actuated by magnetic induction;
a wing connected to the housing by a rod that extends away from the housing,
wherein the second actuating device comprises:
a second housing; and
a second wing connected to the second housing through a second rod that extends away from the second housing,

wherein the servo type actuator is configured to pivot each of the wing and the second wing in different directions.

2. The actuating device of claim 1 , further comprising a shaft
connecting the housing, the stator, and the coil.

3. The actuating device of claim 1 , wherein the each magnet of the plurality of magnets have polarities that are aligned.

4. The actuating device of claim 1 , wherein each magnet of the plurality of magnets are on a point of the housing which is farthest away from a center point of the core portion, and wherein an angle formed between the each magnet of the plurality of magnets through the center point of the core portion is 180 degrees.

5. An actuating device, comprising:
a first actuating device, a second actuating device, and a servo type actuator, wherein the first actuating device comprises:
a stator within a housing, wherein the stator comprises a core portion and a shoe portion, wherein the shoe portion comprises an arc, wherein the shoe portion extends from each terminus of a plurality of termini of the core portion;

a coil extending around the core portion of the stator;
a plurality of magnets coupled within the housing, wherein each magnet of the plurality of magnets are coupled with the stator, wherein the each magnet of the plurality of magnets are coupled on opposite sides of the housing, and wherein the housing is configured to rotate about a shaft through the core portion of the stator, wherein the shaft is through the housing and the coil; and

a torsion spring around the shaft, wherein a first end of the torsion spring is coupled to the housing and a second end of the torsion spring is coupled to a first elbow, wherein the first elbow is coupled to the stator; and
a wing connected to the housing through a rod that extends away from the housing,
wherein the second actuating device comprises:
a second housing; and
a second wing connected to the second housing through a second rod that extends away from the second housing,
wherein the servo type actuator is configured to pivot each of the wing and the second wing in different directions.

6. The actuating device of claim 5 , wherein each magnet of the plurality of magnets are on a point of the housing which is farthest away from a center point of the core portion, and wherein an angle formed between the each magnet of the plurality of magnets through the center point of the core portion is 180 degrees.

7. The actuating device of claim 5 , wherein the each magnet of the plurality of magnets have polarities that are aligned.

8. An actuating device, comprising:
a first actuating device, a second actuating device, and a servo type actuator wherein the first actuating device comprises:
a stator within a housing, wherein the stator comprises a core portion and a shoe portion, wherein the shoe portion comprises an arc, wherein the shoe portion extends from each terminus of a plurality of termini of the core portion;
a coil extending around the core portion of the stator;
a plurality of magnets coupled within the housing, wherein each magnet of the plurality of magnets are coupled with the stator, wherein the each magnet of the plurality of magnets are coupled on opposite sides of the housing wherein the housing is configured to rotate about a shaft through the core portion of the stator, wherein the shaft is through the housing and the coil;
a wing connected to the housing through a rod that extends away from the housing; and
a cantilever leaf spring, wherein a first end of the cantilever leaf spring is fixed to the housing and a second end of the cantilever leaf spring rests in a notch of a support, wherein the support is coupled to the stator,

wherein the second actuating device comprises:
a second housing; and
a second wing connected to the second housing through a second rod that extends away from the second housing,
wherein the servo type actuator is configured to pivot each of the wing and the second wing in different directions.

9. The actuating device of claim 8 , wherein each magnet of the plurality of magnets are on a point of the housing which is farthest away from a center point of the core portion, and wherein an angle formed between the each magnet of the plurality of magnets through the center point of the core portion is 180 degrees.

10. The actuating device of claim 8 , wherein the each magnet of the plurality of magnets have polarities that are aligned.

Assignees

• Purdue Research Foundation

Inventors

• Fei Fan
• Deng Xinyan

Classifications

• H02K7/065

  Electromechanical oscillators; Vibrating magnetic drives · CPC title

• H02K33/06

  with polarised armatures · CPC title

• H02K1/17

  Stator cores with permanent magnets · CPC title

• B63H1/36

  swinging sideways, e.g. fishtail type · CPC title

• H02K33/16

  with polarised armatures moving in alternate directions by reversal or energisation of a single coil system · CPC title