# US 2014/0197706 A1 · Reaction force compensation device

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- Number: US 2014/0197706 A1
- Document ID: US20140197706A1
- Status: Published application
- Kind: A1
- Application number: 14/091,950
- Filed: 2013-11-27
- Published: 2014-07-17
- Earliest claimed: 2012-11-29
- Assignees: Foundation of Soongsil University-Industry Cooperation
- Applicants: Foundation of Soongsil University-Industry Cooperation
- Inventors: Hyeong-Joon Ahn; Kyoung-Rock Kim; Dong-Jun Kim
- Web page: https://patentgrep.com/patent/US20140197706A1

## CPC

- H02K 7/104: with eddy-current brakes
- H02K 5/24: specially adapted for suppression or reduction of noise or vibrations
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})

## Abstract

Provided is a reaction force compensation device capable of compensating for a reaction force caused by a motor that is continuously rotating. The reaction force compensation device is configured to compensate for a reaction force generated when a motor including a stator and a rotor, which is combined with the stator to be rotatable, is driven, and includes a housing disposed below the motor, and a rotation support member disposed between the housing and the rotor and configured to support the stator to be rotatable with respect to the housing. The stator rotates by a reaction force generated when the rotor rotates.

## Claims

### Claim 1

A reaction force compensation device for compensating for a reaction force generated when a motor, which includes a stator and a rotor combined with the stator to be rotatable, is driven, the device comprising:
a housing disposed below the motor; and
a rotation support member disposed between the housing and the stator, and configured to support the stator to be rotatable with respect to the housing,
wherein the stator rotates by a reaction force generated when the rotor rotates.

### Claim 2 (depends on 1)

The reaction force compensation device of claim 1, further comprising:
a stator rotation sensor configured to measure a degree of rotation of the stator; and
a rotor rotation sensor configured to measure a degree of rotation of the rotor.

### Claim 3 (depends on 2)

The reaction force compensation device of claim 2, further comprising:
a conducting plate combined with one of the stator and the housing; and
a permanent magnet or an electromagnet combined with the other of the stator and the housing.

### Claim 4 (depends on 3)

The reaction force compensation device of claim 3, further comprising a control device configured to compare the degree of rotation of the stator and the degree of rotation of the rotor with each other, and control an output of the electromagnet based on a result of the comparing.

### Claim 5 (depends on 2)

The reaction force compensation device of claim 2, further comprising an additional mass member combined with the stator to rotate together with the stator.