Electromechanical actuator damping

Patent metadata

Field	Value
Publication number	US-10404121-B2
Application number	US-201615135842-A
Country	US
Kind code	B2
Filing date	Apr 22, 2016
Priority date	Apr 22, 2015
Publication date	Sep 3, 2019
Grant date	Sep 3, 2019

Abstract

The invention provides a stator for an electric motor comprising a plurality of radially inwardly extending teeth and comprising conductive material incorporated in one or more of the teeth.

First claim

The invention claimed is:

1. An actuator comprising:
an electric motor, the electric motor comprising:
a rotor and a stator, the stator comprising a plurality of radially inwardly extending teeth;
damping means to provide a damping function to actuator, the damping means comprising rods or bars of electrically conductive material incorporated into one or more of the stator teeth, wherein the bars extend along the stator teeth from one axial end of the stator to another axial end of the stator; and
means for shorting the conductive material, the means for shorting including a shorting ring in contact with the damping means.

2. The actuator of claim 1 , wherein the means for shorting comprises a shorting ring at each axial end of the stator.

Assignees

• Goodrich Actuation Systems Ltd

Inventors

• Benarous Maamar
• Socheleau Jerôme A

Classifications

• H02K1/2706

  Inner rotors · CPC title

• H02K1/02

  characterised by the magnetic material · CPC title

• H02K3/16 Primary

  for auxiliary purposes, e.g. damping or commutating · CPC title

• H02K3/48

  in slots · CPC title

• H02K1/165

  Shape, form or location of the slots · CPC title